diff options
Diffstat (limited to 'drivers')
42 files changed, 363 insertions, 391 deletions
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 2b805d7..f289d2a 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -579,12 +579,22 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device) goto err_free_cpumask; } - /* - * Do not start hotplugged CPUs now, but when they - * are onlined the first time - */ - if (pr->flags.need_hotplug_init) - return 0; +#ifdef CONFIG_CPU_FREQ + acpi_processor_ppc_has_changed(pr, 0); + acpi_processor_load_module(pr); +#endif + acpi_processor_get_throttling_info(pr); + acpi_processor_get_limit_info(pr); + + if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver) + acpi_processor_power_init(pr, device); + + pr->cdev = thermal_cooling_device_register("Processor", device, + &processor_cooling_ops); + if (IS_ERR(pr->cdev)) { + result = PTR_ERR(pr->cdev); + goto err_remove_sysfs; + } /* * Do not start hotplugged CPUs now, but when they diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 85b3237..0af48a8 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -240,6 +240,28 @@ void acpi_processor_ppc_exit(void) acpi_processor_ppc_status &= ~PPC_REGISTERED; } +/* + * Do a quick check if the systems looks like it should use ACPI + * cpufreq. We look at a _PCT method being available, but don't + * do a whole lot of sanity checks. + */ +void acpi_processor_load_module(struct acpi_processor *pr) +{ + static int requested; + acpi_status status = 0; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + + if (!arch_has_acpi_pdc() || requested) + return; + status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer); + if (!ACPI_FAILURE(status)) { + printk(KERN_INFO PREFIX "Requesting acpi_cpufreq\n"); + request_module_nowait("acpi_cpufreq"); + requested = 1; + } + kfree(buffer.pointer); +} + static int acpi_processor_get_performance_control(struct acpi_processor *pr) { int result = 0; diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 40fb122..26a06b8 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -1194,13 +1194,15 @@ EXPORT_SYMBOL_GPL(subsys_interface_register); void subsys_interface_unregister(struct subsys_interface *sif) { - struct bus_type *subsys = sif->subsys; + struct bus_type *subsys; struct subsys_dev_iter iter; struct device *dev; - if (!sif) + if (!sif || !sif->subsys) return; + subsys = sif->subsys; + mutex_lock(&subsys->p->mutex); list_del_init(&sif->node); if (sif->remove_dev) { diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index db87e78..2a0c670 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -11,6 +11,7 @@ #include <linux/device.h> #include <linux/node.h> #include <linux/gfp.h> +#include <linux/slab.h> #include <linux/percpu.h> #include "base.h" @@ -223,6 +224,9 @@ int __cpuinit register_cpu(struct cpu *cpu, int num) cpu->node_id = cpu_to_node(num); cpu->dev.id = num; cpu->dev.bus = &cpu_subsys; +#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE + cpu->dev.bus->uevent = arch_cpu_uevent; +#endif error = device_register(&cpu->dev); if (!error && cpu->hotpluggable) register_cpu_control(cpu); @@ -247,6 +251,10 @@ struct device *get_cpu_device(unsigned cpu) } EXPORT_SYMBOL_GPL(get_cpu_device); +#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE +static DEVICE_ATTR(modalias, 0444, arch_print_cpu_modalias, NULL); +#endif + static struct attribute *cpu_root_attrs[] = { #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE &dev_attr_probe.attr, @@ -257,6 +265,9 @@ static struct attribute *cpu_root_attrs[] = { &cpu_attrs[2].attr.attr, &dev_attr_kernel_max.attr, &dev_attr_offline.attr, +#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE + &dev_attr_modalias.attr, +#endif NULL }; diff --git a/drivers/base/driver.c b/drivers/base/driver.c index b631f7c..60e4f77 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -153,34 +153,6 @@ int driver_add_kobj(struct device_driver *drv, struct kobject *kobj, } EXPORT_SYMBOL_GPL(driver_add_kobj); -/** - * get_driver - increment driver reference count. - * @drv: driver. - */ -struct device_driver *get_driver(struct device_driver *drv) -{ - if (drv) { - struct driver_private *priv; - struct kobject *kobj; - - kobj = kobject_get(&drv->p->kobj); - priv = to_driver(kobj); - return priv->driver; - } - return NULL; -} -EXPORT_SYMBOL_GPL(get_driver); - -/** - * put_driver - decrement driver's refcount. - * @drv: driver. - */ -void put_driver(struct device_driver *drv) -{ - kobject_put(&drv->p->kobj); -} -EXPORT_SYMBOL_GPL(put_driver); - static int driver_add_groups(struct device_driver *drv, const struct attribute_group **groups) { @@ -234,7 +206,6 @@ int driver_register(struct device_driver *drv) other = driver_find(drv->name, drv->bus); if (other) { - put_driver(other); printk(KERN_ERR "Error: Driver '%s' is already registered, " "aborting...\n", drv->name); return -EBUSY; @@ -275,7 +246,9 @@ EXPORT_SYMBOL_GPL(driver_unregister); * Call kset_find_obj() to iterate over list of drivers on * a bus to find driver by name. Return driver if found. * - * Note that kset_find_obj increments driver's reference count. + * This routine provides no locking to prevent the driver it returns + * from being unregistered or unloaded while the caller is using it. + * The caller is responsible for preventing this. */ struct device_driver *driver_find(const char *name, struct bus_type *bus) { @@ -283,6 +256,8 @@ struct device_driver *driver_find(const char *name, struct bus_type *bus) struct driver_private *priv; if (k) { + /* Drop reference added by kset_find_obj() */ + kobject_put(k); priv = to_driver(k); return priv->driver; } diff --git a/drivers/cpufreq/cpufreq-nforce2.c b/drivers/cpufreq/cpufreq-nforce2.c index 7bac808..13d311e 100644 --- a/drivers/cpufreq/cpufreq-nforce2.c +++ b/drivers/cpufreq/cpufreq-nforce2.c @@ -385,6 +385,14 @@ static struct cpufreq_driver nforce2_driver = { .owner = THIS_MODULE, }; +#ifdef MODULE +static DEFINE_PCI_DEVICE_TABLE(nforce2_ids) = { + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2 }, + {} +}; +MODULE_DEVICE_TABLE(pci, nforce2_ids); +#endif + /** * nforce2_detect_chipset - detect the Southbridge which contains FSB PLL logic * diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index 4bd6815..3fffbe6 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -16,6 +16,7 @@ #include <linux/io.h> #include <linux/delay.h> +#include <asm/cpu_device_id.h> #include <asm/msr.h> #include <asm/tsc.h> @@ -437,18 +438,19 @@ static struct cpufreq_driver eps_driver = { .attr = eps_attr, }; + +/* This driver will work only on Centaur C7 processors with + * Enhanced SpeedStep/PowerSaver registers */ +static const struct x86_cpu_id eps_cpu_id[] = { + { X86_VENDOR_CENTAUR, 6, X86_MODEL_ANY, X86_FEATURE_EST }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, eps_cpu_id); + static int __init eps_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - /* This driver will work only on Centaur C7 processors with - * Enhanced SpeedStep/PowerSaver registers */ - if (c->x86_vendor != X86_VENDOR_CENTAUR - || c->x86 != 6 || c->x86_model < 10) - return -ENODEV; - if (!cpu_has(c, X86_FEATURE_EST)) + if (!x86_match_cpu(eps_cpu_id) || boot_cpu_data.x86_model < 10) return -ENODEV; - if (cpufreq_register_driver(&eps_driver)) return -EINVAL; return 0; diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c index c587db4..960671f 100644 --- a/drivers/cpufreq/elanfreq.c +++ b/drivers/cpufreq/elanfreq.c @@ -23,6 +23,7 @@ #include <linux/delay.h> #include <linux/cpufreq.h> +#include <asm/cpu_device_id.h> #include <asm/msr.h> #include <linux/timex.h> #include <linux/io.h> @@ -277,17 +278,16 @@ static struct cpufreq_driver elanfreq_driver = { .attr = elanfreq_attr, }; +static const struct x86_cpu_id elan_id[] = { + { X86_VENDOR_AMD, 4, 10, }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, elan_id); static int __init elanfreq_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - /* Test if we have the right hardware */ - if ((c->x86_vendor != X86_VENDOR_AMD) || - (c->x86 != 4) || (c->x86_model != 10)) { - printk(KERN_INFO "elanfreq: error: no Elan processor found!\n"); + if (!x86_match_cpu(elan_id)) return -ENODEV; - } return cpufreq_register_driver(&elanfreq_driver); } diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c index ffe1f2c..5a06c0b 100644 --- a/drivers/cpufreq/gx-suspmod.c +++ b/drivers/cpufreq/gx-suspmod.c @@ -82,6 +82,7 @@ #include <linux/errno.h> #include <linux/slab.h> +#include <asm/cpu_device_id.h> #include <asm/processor-cyrix.h> /* PCI config registers, all at F0 */ @@ -171,6 +172,7 @@ static struct pci_device_id gx_chipset_tbl[] __initdata = { { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), }, { 0, }, }; +MODULE_DEVICE_TABLE(gx_chipset_tbl); static void gx_write_byte(int reg, int value) { @@ -185,13 +187,6 @@ static __init struct pci_dev *gx_detect_chipset(void) { struct pci_dev *gx_pci = NULL; - /* check if CPU is a MediaGX or a Geode. */ - if ((boot_cpu_data.x86_vendor != X86_VENDOR_NSC) && - (boot_cpu_data.x86_vendor != X86_VENDOR_CYRIX)) { - pr_debug("error: no MediaGX/Geode processor found!\n"); - return NULL; - } - /* detect which companion chip is used */ for_each_pci_dev(gx_pci) { if ((pci_match_id(gx_chipset_tbl, gx_pci)) != NULL) diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index f47d26e..53ddbc7 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -35,6 +35,7 @@ #include <linux/acpi.h> #include <asm/msr.h> +#include <asm/cpu_device_id.h> #include <acpi/processor.h> #include "longhaul.h" @@ -951,12 +952,17 @@ static struct cpufreq_driver longhaul_driver = { .attr = longhaul_attr, }; +static const struct x86_cpu_id longhaul_id[] = { + { X86_VENDOR_CENTAUR, 6 }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, longhaul_id); static int __init longhaul_init(void) { struct cpuinfo_x86 *c = &cpu_data(0); - if (c->x86_vendor != X86_VENDOR_CENTAUR || c->x86 != 6) + if (!x86_match_cpu(longhaul_id)) return -ENODEV; #ifdef CONFIG_SMP diff --git a/drivers/cpufreq/longrun.c b/drivers/cpufreq/longrun.c index 34ea359..8bc9f5f 100644 --- a/drivers/cpufreq/longrun.c +++ b/drivers/cpufreq/longrun.c @@ -14,6 +14,7 @@ #include <asm/msr.h> #include <asm/processor.h> +#include <asm/cpu_device_id.h> static struct cpufreq_driver longrun_driver; @@ -288,6 +289,12 @@ static struct cpufreq_driver longrun_driver = { .owner = THIS_MODULE, }; +static const struct x86_cpu_id longrun_ids[] = { + { X86_VENDOR_TRANSMETA, X86_FAMILY_ANY, X86_MODEL_ANY, + X86_FEATURE_LONGRUN }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, longrun_ids); /** * longrun_init - initializes the Transmeta Crusoe LongRun CPUFreq driver @@ -296,12 +303,8 @@ static struct cpufreq_driver longrun_driver = { */ static int __init longrun_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - if (c->x86_vendor != X86_VENDOR_TRANSMETA || - !cpu_has(c, X86_FEATURE_LONGRUN)) + if (!x86_match_cpu(longrun_ids)) return -ENODEV; - return cpufreq_register_driver(&longrun_driver); } diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c index 6be3e07..827629c9 100644 --- a/drivers/cpufreq/p4-clockmod.c +++ b/drivers/cpufreq/p4-clockmod.c @@ -31,6 +31,7 @@ #include <asm/processor.h> #include <asm/msr.h> #include <asm/timer.h> +#include <asm/cpu_device_id.h> #include "speedstep-lib.h" @@ -289,21 +290,25 @@ static struct cpufreq_driver p4clockmod_driver = { .attr = p4clockmod_attr, }; +static const struct x86_cpu_id cpufreq_p4_id[] = { + { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_ACC }, + {} +}; + +/* + * Intentionally no MODULE_DEVICE_TABLE here: this driver should not + * be auto loaded. Please don't add one. + */ static int __init cpufreq_p4_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); int ret; /* * THERM_CONTROL is architectural for IA32 now, so * we can rely on the capability checks */ - if (c->x86_vendor != X86_VENDOR_INTEL) - return -ENODEV; - - if (!test_cpu_cap(c, X86_FEATURE_ACPI) || - !test_cpu_cap(c, X86_FEATURE_ACC)) + if (!x86_match_cpu(cpufreq_p4_id) || !boot_cpu_has(X86_FEATURE_ACPI)) return -ENODEV; ret = cpufreq_register_driver(&p4clockmod_driver); diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index b3379d6..54dd031 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -16,6 +16,7 @@ #include <linux/timex.h> #include <linux/io.h> +#include <asm/cpu_device_id.h> #include <asm/msr.h> #define POWERNOW_IOPORT 0xfff0 /* it doesn't matter where, as long @@ -210,6 +211,12 @@ static struct cpufreq_driver powernow_k6_driver = { .attr = powernow_k6_attr, }; +static const struct x86_cpu_id powernow_k6_ids[] = { + { X86_VENDOR_AMD, 5, 12 }, + { X86_VENDOR_AMD, 5, 13 }, + {} +}; + /** * powernow_k6_init - initializes the k6 PowerNow! CPUFreq driver @@ -220,10 +227,7 @@ static struct cpufreq_driver powernow_k6_driver = { */ static int __init powernow_k6_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 5) || - ((c->x86_model != 12) && (c->x86_model != 13))) + if (!x86_match_cpu(powernow_k6_ids)) return -ENODEV; if (!request_region(POWERNOW_IOPORT, 16, "PowerNow!")) { diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index d71d9f3..501d167 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -28,6 +28,7 @@ #include <asm/timer.h> /* Needed for recalibrate_cpu_khz() */ #include <asm/msr.h> #include <asm/system.h> +#include <asm/cpu_device_id.h> #ifdef CONFIG_X86_POWERNOW_K7_ACPI #include <linux/acpi.h> @@ -110,18 +111,19 @@ static int check_fsb(unsigned int fsbspeed) return delta < 5; } +static const struct x86_cpu_id powernow_k7_cpuids[] = { + { X86_VENDOR_AMD, 7, }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, powernow_k7_cpuids); + static int check_powernow(void) { struct cpuinfo_x86 *c = &cpu_data(0); unsigned int maxei, eax, ebx, ecx, edx; - if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 6)) { -#ifdef MODULE - printk(KERN_INFO PFX "This module only works with " - "AMD K7 CPUs\n"); -#endif + if (!x86_match_cpu(powernow_k7_cpuids)) return 0; - } /* Get maximum capabilities */ maxei = cpuid_eax(0x80000000); diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 8f9b2cee..c0e8164 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -40,6 +40,7 @@ #include <linux/delay.h> #include <asm/msr.h> +#include <asm/cpu_device_id.h> #include <linux/acpi.h> #include <linux/mutex.h> @@ -520,6 +521,15 @@ static int core_voltage_post_transition(struct powernow_k8_data *data, return 0; } +static const struct x86_cpu_id powernow_k8_ids[] = { + /* IO based frequency switching */ + { X86_VENDOR_AMD, 0xf }, + /* MSR based frequency switching supported */ + X86_FEATURE_MATCH(X86_FEATURE_HW_PSTATE), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, powernow_k8_ids); + static void check_supported_cpu(void *_rc) { u32 eax, ebx, ecx, edx; @@ -527,13 +537,7 @@ static void check_supported_cpu(void *_rc) *rc = -ENODEV; - if (__this_cpu_read(cpu_info.x86_vendor) != X86_VENDOR_AMD) - return; - eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE); - if (((eax & CPUID_XFAM) != CPUID_XFAM_K8) && - ((eax & CPUID_XFAM) < CPUID_XFAM_10H)) - return; if ((eax & CPUID_XFAM) == CPUID_XFAM_K8) { if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) || @@ -1553,6 +1557,9 @@ static int __cpuinit powernowk8_init(void) unsigned int i, supported_cpus = 0, cpu; int rv; + if (!x86_match_cpu(powernow_k8_ids)) + return -ENODEV; + for_each_online_cpu(i) { int rc; smp_call_function_single(i, check_supported_cpu, &rc, 1); diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c index 1e205e6..e42e073 100644 --- a/drivers/cpufreq/sc520_freq.c +++ b/drivers/cpufreq/sc520_freq.c @@ -22,6 +22,7 @@ #include <linux/timex.h> #include <linux/io.h> +#include <asm/cpu_device_id.h> #include <asm/msr.h> #define MMCR_BASE 0xfffef000 /* The default base address */ @@ -150,18 +151,19 @@ static struct cpufreq_driver sc520_freq_driver = { .attr = sc520_freq_attr, }; +static const struct x86_cpu_id sc520_ids[] = { + { X86_VENDOR_AMD, 4, 9 }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, sc520_ids); static int __init sc520_freq_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); int err; - /* Test if we have the right hardware */ - if (c->x86_vendor != X86_VENDOR_AMD || - c->x86 != 4 || c->x86_model != 9) { - pr_debug("no Elan SC520 processor found!\n"); + if (!x86_match_cpu(sc520_ids)) return -ENODEV; - } + cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1); if (!cpuctl) { printk(KERN_ERR "sc520_freq: error: failed to remap memory\n"); diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c index 6ea3455..3a953d5 100644 --- a/drivers/cpufreq/speedstep-centrino.c +++ b/drivers/cpufreq/speedstep-centrino.c @@ -25,6 +25,7 @@ #include <asm/msr.h> #include <asm/processor.h> #include <asm/cpufeature.h> +#include <asm/cpu_device_id.h> #define PFX "speedstep-centrino: " #define MAINTAINER "cpufreq@vger.kernel.org" @@ -595,6 +596,24 @@ static struct cpufreq_driver centrino_driver = { .owner = THIS_MODULE, }; +/* + * This doesn't replace the detailed checks above because + * the generic CPU IDs don't have a way to match for steppings + * or ASCII model IDs. + */ +static const struct x86_cpu_id centrino_ids[] = { + { X86_VENDOR_INTEL, 6, 9, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 15, 3, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 15, 4, X86_FEATURE_EST }, + {} +}; +#if 0 +/* Autoload or not? Do not for now. */ +MODULE_DEVICE_TABLE(x86cpu, centrino_ids); +#endif /** * centrino_init - initializes the Enhanced SpeedStep CPUFreq driver @@ -612,11 +631,8 @@ static struct cpufreq_driver centrino_driver = { */ static int __init centrino_init(void) { - struct cpuinfo_x86 *cpu = &cpu_data(0); - - if (!cpu_has(cpu, X86_FEATURE_EST)) + if (!x86_match_cpu(centrino_ids)) return -ENODEV; - return cpufreq_register_driver(¢rino_driver); } diff --git a/drivers/cpufreq/speedstep-ich.c b/drivers/cpufreq/speedstep-ich.c index a748ce7..7432b3a 100644 --- a/drivers/cpufreq/speedstep-ich.c +++ b/drivers/cpufreq/speedstep-ich.c @@ -25,6 +25,8 @@ #include <linux/pci.h> #include <linux/sched.h> +#include <asm/cpu_device_id.h> + #include "speedstep-lib.h" @@ -388,6 +390,16 @@ static struct cpufreq_driver speedstep_driver = { .attr = speedstep_attr, }; +static const struct x86_cpu_id ss_smi_ids[] = { + { X86_VENDOR_INTEL, 6, 0xb, }, + { X86_VENDOR_INTEL, 6, 0x8, }, + { X86_VENDOR_INTEL, 15, 2 }, + {} +}; +#if 0 +/* Autoload or not? Do not for now. */ +MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids); +#endif /** * speedstep_init - initializes the SpeedStep CPUFreq driver @@ -398,6 +410,9 @@ static struct cpufreq_driver speedstep_driver = { */ static int __init speedstep_init(void) { + if (!x86_match_cpu(ss_smi_ids)) + return -ENODEV; + /* detect processor */ speedstep_processor = speedstep_detect_processor(); if (!speedstep_processor) { diff --git a/drivers/cpufreq/speedstep-lib.c b/drivers/cpufreq/speedstep-lib.c index 8af2d2f..7047821 100644 --- a/drivers/cpufreq/speedstep-lib.c +++ b/drivers/cpufreq/speedstep-lib.c @@ -249,6 +249,7 @@ EXPORT_SYMBOL_GPL(speedstep_get_frequency); * DETECT SPEEDSTEP-CAPABLE PROCESSOR * *********************************************************************/ +/* Keep in sync with the x86_cpu_id tables in the different modules */ unsigned int speedstep_detect_processor(void) { struct cpuinfo_x86 *c = &cpu_data(0); diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c index c76ead3..6a457fc 100644 --- a/drivers/cpufreq/speedstep-smi.c +++ b/drivers/cpufreq/speedstep-smi.c @@ -20,6 +20,7 @@ #include <linux/delay.h> #include <linux/io.h> #include <asm/ist.h> +#include <asm/cpu_device_id.h> #include "speedstep-lib.h" @@ -379,6 +380,17 @@ static struct cpufreq_driver speedstep_driver = { .attr = speedstep_attr, }; +static const struct x86_cpu_id ss_smi_ids[] = { + { X86_VENDOR_INTEL, 6, 0xb, }, + { X86_VENDOR_INTEL, 6, 0x8, }, + { X86_VENDOR_INTEL, 15, 2 }, + {} +}; +#if 0 +/* Not auto loaded currently */ +MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids); +#endif + /** * speedstep_init - initializes the SpeedStep CPUFreq driver * @@ -388,6 +400,9 @@ static struct cpufreq_driver speedstep_driver = { */ static int __init speedstep_init(void) { + if (!x86_match_cpu(ss_smi_ids)) + return -ENODEV; + speedstep_processor = speedstep_detect_processor(); switch (speedstep_processor) { diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c index 29b9469..37b2e94 100644 --- a/drivers/crypto/padlock-aes.c +++ b/drivers/crypto/padlock-aes.c @@ -19,6 +19,7 @@ #include <linux/percpu.h> #include <linux/smp.h> #include <linux/slab.h> +#include <asm/cpu_device_id.h> #include <asm/byteorder.h> #include <asm/processor.h> #include <asm/i387.h> @@ -503,12 +504,18 @@ static struct crypto_alg cbc_aes_alg = { } }; +static struct x86_cpu_id padlock_cpu_id[] = { + X86_FEATURE_MATCH(X86_FEATURE_XCRYPT), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, padlock_cpu_id); + static int __init padlock_init(void) { int ret; struct cpuinfo_x86 *c = &cpu_data(0); - if (!cpu_has_xcrypt) + if (!x86_match_cpu(padlock_cpu_id)) return -ENODEV; if (!cpu_has_xcrypt_enabled) { diff --git a/drivers/crypto/padlock-sha.c b/drivers/crypto/padlock-sha.c index 06bdb4b..9266c0e 100644 --- a/drivers/crypto/padlock-sha.c +++ b/drivers/crypto/padlock-sha.c @@ -22,6 +22,7 @@ #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/scatterlist.h> +#include <asm/cpu_device_id.h> #include <asm/i387.h> struct padlock_sha_desc { @@ -526,6 +527,12 @@ static struct shash_alg sha256_alg_nano = { } }; +static struct x86_cpu_id padlock_sha_ids[] = { + X86_FEATURE_MATCH(X86_FEATURE_PHE), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, padlock_sha_ids); + static int __init padlock_init(void) { int rc = -ENODEV; @@ -533,15 +540,8 @@ static int __init padlock_init(void) struct shash_alg *sha1; struct shash_alg *sha256; - if (!cpu_has_phe) { - printk(KERN_NOTICE PFX "VIA PadLock Hash Engine not detected.\n"); - return -ENODEV; - } - - if (!cpu_has_phe_enabled) { - printk(KERN_NOTICE PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n"); + if (!x86_match_cpu(padlock_sha_ids) || !cpu_has_phe_enabled) return -ENODEV; - } /* Register the newly added algorithm module if on * * VIA Nano processor, or else just do as before */ diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index af08ce7..bce53fa 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1619,11 +1619,7 @@ static ssize_t store_new_id(struct device_driver *drv, const char *buf, list_add_tail(&dynid->list, &hdrv->dyn_list); spin_unlock(&hdrv->dyn_lock); - ret = 0; - if (get_driver(&hdrv->driver)) { - ret = driver_attach(&hdrv->driver); - put_driver(&hdrv->driver); - } + ret = driver_attach(&hdrv->driver); return ret ? : count; } diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 36484db..9ffbfc5 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -37,81 +37,6 @@ struct vmbus_channel_message_table_entry { void (*message_handler)(struct vmbus_channel_message_header *msg); }; -#define MAX_MSG_TYPES 4 -#define MAX_NUM_DEVICE_CLASSES_SUPPORTED 8 - -static const uuid_le - supported_device_classes[MAX_NUM_DEVICE_CLASSES_SUPPORTED] = { - /* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} */ - /* Storage - SCSI */ - { - .b = { - 0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, - 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f - } - }, - - /* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */ - /* Network */ - { - .b = { - 0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46, - 0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E - } - }, - - /* {CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} */ - /* Input */ - { - .b = { - 0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c, - 0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A - } - }, - - /* {32412632-86cb-44a2-9b5c-50d1417354f5} */ - /* IDE */ - { - .b = { - 0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, - 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5 - } - }, - /* 0E0B6031-5213-4934-818B-38D90CED39DB */ - /* Shutdown */ - { - .b = { - 0x31, 0x60, 0x0B, 0X0E, 0x13, 0x52, 0x34, 0x49, - 0x81, 0x8B, 0x38, 0XD9, 0x0C, 0xED, 0x39, 0xDB - } - }, - /* {9527E630-D0AE-497b-ADCE-E80AB0175CAF} */ - /* TimeSync */ - { - .b = { - 0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, - 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf - } - }, - /* {57164f39-9115-4e78-ab55-382f3bd5422d} */ - /* Heartbeat */ - { - .b = { - 0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, - 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d - } - }, - /* {A9A0F4E7-5A45-4d96-B827-8A841E8C03E6} */ - /* KVP */ - { - .b = { - 0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, - 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6 - } - }, - -}; - /** * vmbus_prep_negotiate_resp() - Create default response for Hyper-V Negotiate message @@ -321,20 +246,8 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr) struct vmbus_channel *newchannel; uuid_le *guidtype; uuid_le *guidinstance; - int i; - int fsupported = 0; offer = (struct vmbus_channel_offer_channel *)hdr; - for (i = 0; i < MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) { - if (!uuid_le_cmp(offer->offer.if_type, - supported_device_classes[i])) { - fsupported = 1; - break; - } - } - - if (!fsupported) - return; guidtype = &offer->offer.if_type; guidinstance = &offer->offer.if_instance; diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index a6c6ec3..249ac46 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -39,6 +39,7 @@ #include <linux/moduleparam.h> #include <asm/msr.h> #include <asm/processor.h> +#include <asm/cpu_device_id.h> #define DRVNAME "coretemp" @@ -759,13 +760,23 @@ static struct notifier_block coretemp_cpu_notifier __refdata = { .notifier_call = coretemp_cpu_callback, }; +static const struct x86_cpu_id coretemp_ids[] = { + { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_DTS }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, coretemp_ids); + static int __init coretemp_init(void) { int i, err = -ENODEV; - /* quick check if we run Intel */ - if (cpu_data(0).x86_vendor != X86_VENDOR_INTEL) - goto exit; + /* + * CPUID.06H.EAX[0] indicates whether the CPU has thermal + * sensors. We check this bit only, all the early CPUs + * without thermal sensors will be filtered out. + */ + if (!x86_match_cpu(coretemp_ids)) + return -ENODEV; err = platform_driver_register(&coretemp_driver); if (err) diff --git a/drivers/hwmon/via-cputemp.c b/drivers/hwmon/via-cputemp.c index 8eac67d..8689664e 100644 --- a/drivers/hwmon/via-cputemp.c +++ b/drivers/hwmon/via-cputemp.c @@ -37,6 +37,7 @@ #include <linux/cpu.h> #include <asm/msr.h> #include <asm/processor.h> +#include <asm/cpu_device_id.h> #define DRVNAME "via_cputemp" @@ -308,15 +309,20 @@ static struct notifier_block via_cputemp_cpu_notifier __refdata = { .notifier_call = via_cputemp_cpu_callback, }; +static const struct x86_cpu_id cputemp_ids[] = { + { X86_VENDOR_CENTAUR, 6, 0xa, }, /* C7 A */ + { X86_VENDOR_CENTAUR, 6, 0xd, }, /* C7 D */ + { X86_VENDOR_CENTAUR, 6, 0xf, }, /* Nano */ + {} +}; +MODULE_DEVICE_TABLE(x86cpu, cputemp_ids); + static int __init via_cputemp_init(void) { int i, err; - if (cpu_data(0).x86_vendor != X86_VENDOR_CENTAUR) { - printk(KERN_DEBUG DRVNAME ": Not a VIA CPU\n"); - err = -ENODEV; - goto exit; - } + if (!x86_match_cpu(cputemp_ids)) + return -ENODEV; err = platform_driver_register(&via_cputemp_driver); if (err) diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index 54ab97b..237fe57 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -62,6 +62,7 @@ #include <linux/notifier.h> #include <linux/cpu.h> #include <linux/module.h> +#include <asm/cpu_device_id.h> #include <asm/mwait.h> #include <asm/msr.h> @@ -81,6 +82,17 @@ static unsigned int mwait_substates; /* Reliable LAPIC Timer States, bit 1 for C1 etc. */ static unsigned int lapic_timer_reliable_states = (1 << 1); /* Default to only C1 */ +struct idle_cpu { + struct cpuidle_state *state_table; + + /* + * Hardware C-state auto-demotion may not always be optimal. + * Indicate which enable bits to clear here. + */ + unsigned long auto_demotion_disable_flags; +}; + +static const struct idle_cpu *icpu; static struct cpuidle_device __percpu *intel_idle_cpuidle_devices; static int intel_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index); @@ -88,12 +100,6 @@ static int intel_idle(struct cpuidle_device *dev, static struct cpuidle_state *cpuidle_state_table; /* - * Hardware C-state auto-demotion may not always be optimal. - * Indicate which enable bits to clear here. - */ -static unsigned long long auto_demotion_disable_flags; - -/* * Set this flag for states where the HW flushes the TLB for us * and so we don't need cross-calls to keep it consistent. * If this flag is set, SW flushes the TLB, so even if the @@ -319,27 +325,72 @@ static void auto_demotion_disable(void *dummy) unsigned long long msr_bits; rdmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits); - msr_bits &= ~auto_demotion_disable_flags; + msr_bits &= ~(icpu->auto_demotion_disable_flags); wrmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits); } +static const struct idle_cpu idle_cpu_nehalem = { + .state_table = nehalem_cstates, +}; + +static const struct idle_cpu idle_cpu_westmere = { + .state_table = nehalem_cstates, + .auto_demotion_disable_flags = NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE, +}; + +static const struct idle_cpu idle_cpu_atom = { + .state_table = atom_cstates, +}; + +static const struct idle_cpu idle_cpu_lincroft = { + .state_table = atom_cstates, + .auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE, +}; + +static const struct idle_cpu idle_cpu_snb = { + .state_table = snb_cstates, +}; + +#define ICPU(model, cpu) \ + { X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu } + +static const struct x86_cpu_id intel_idle_ids[] = { + ICPU(0x1a, idle_cpu_nehalem), + ICPU(0x1e, idle_cpu_nehalem), + ICPU(0x1f, idle_cpu_nehalem), + ICPU(0x25, idle_cpu_westmere), + ICPU(0x2c, idle_cpu_westmere), + ICPU(0x2f, idle_cpu_westmere), + ICPU(0x1c, idle_cpu_atom), + ICPU(0x26, idle_cpu_lincroft), + ICPU(0x2f, idle_cpu_westmere), + ICPU(0x2a, idle_cpu_snb), + ICPU(0x2d, idle_cpu_snb), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids); + /* * intel_idle_probe() */ static int intel_idle_probe(void) { unsigned int eax, ebx, ecx; + const struct x86_cpu_id *id; if (max_cstate == 0) { pr_debug(PREFIX "disabled\n"); return -EPERM; } - if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) - return -ENODEV; - - if (!boot_cpu_has(X86_FEATURE_MWAIT)) + id = x86_match_cpu(intel_idle_ids); + if (!id) { + if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && + boot_cpu_data.x86 == 6) + pr_debug(PREFIX "does not run on family %d model %d\n", + boot_cpu_data.x86, boot_cpu_data.x86_model); return -ENODEV; + } if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF) return -ENODEV; @@ -353,43 +404,8 @@ static int intel_idle_probe(void) pr_debug(PREFIX "MWAIT substates: 0x%x\n", mwait_substates); - - if (boot_cpu_data.x86 != 6) /* family 6 */ - return -ENODEV; - - switch (boot_cpu_data.x86_model) { - - case 0x1A: /* Core i7, Xeon 5500 series */ - case 0x1E: /* Core i7 and i5 Processor - Lynnfield Jasper Forest */ - case 0x1F: /* Core i7 and i5 Processor - Nehalem */ - case 0x2E: /* Nehalem-EX Xeon */ - case 0x2F: /* Westmere-EX Xeon */ - case 0x25: /* Westmere */ - case 0x2C: /* Westmere */ - cpuidle_state_table = nehalem_cstates; - auto_demotion_disable_flags = - (NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE); - break; - - case 0x1C: /* 28 - Atom Processor */ - cpuidle_state_table = atom_cstates; - break; - - case 0x26: /* 38 - Lincroft Atom Processor */ - cpuidle_state_table = atom_cstates; - auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE; - break; - - case 0x2A: /* SNB */ - case 0x2D: /* SNB Xeon */ - cpuidle_state_table = snb_cstates; - break; - - default: - pr_debug(PREFIX "does not run on family %d model %d\n", - boot_cpu_data.x86, boot_cpu_data.x86_model); - return -ENODEV; - } + icpu = (const struct idle_cpu *)id->driver_data; + cpuidle_state_table = icpu->state_table; if (boot_cpu_has(X86_FEATURE_ARAT)) /* Always Reliable APIC Timer */ lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE; @@ -470,7 +486,7 @@ static int intel_idle_cpuidle_driver_init(void) drv->state_count += 1; } - if (auto_demotion_disable_flags) + if (icpu->auto_demotion_disable_flags) on_each_cpu(auto_demotion_disable, NULL, 1); return 0; @@ -522,7 +538,7 @@ int intel_idle_cpu_init(int cpu) return -EIO; } - if (auto_demotion_disable_flags) + if (icpu->auto_demotion_disable_flags) smp_call_function_single(cpu, auto_demotion_disable, NULL, 1); return 0; diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c index c351aa4..da739d9 100644 --- a/drivers/input/gameport/gameport.c +++ b/drivers/input/gameport/gameport.c @@ -449,7 +449,6 @@ static ssize_t gameport_rebind_driver(struct device *dev, struct device_attribut } else if ((drv = driver_find(buf, &gameport_bus)) != NULL) { gameport_disconnect_port(gameport); error = gameport_bind_driver(gameport, to_gameport_driver(drv)); - put_driver(drv); } else { error = -EINVAL; } diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index ba70058..d0f7533 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -441,7 +441,6 @@ static ssize_t serio_rebind_driver(struct device *dev, struct device_attribute * } else if ((drv = driver_find(buf, &serio_bus)) != NULL) { serio_disconnect_port(serio); error = serio_bind_driver(serio, to_serio_driver(drv)); - put_driver(drv); serio_remove_duplicate_events(serio, SERIO_RESCAN_PORT); } else { error = -EINVAL; diff --git a/drivers/media/video/cx18/cx18-alsa-main.c b/drivers/media/video/cx18/cx18-alsa-main.c index a1e6c2a..e118361 100644 --- a/drivers/media/video/cx18/cx18-alsa-main.c +++ b/drivers/media/video/cx18/cx18-alsa-main.c @@ -285,7 +285,6 @@ static void __exit cx18_alsa_exit(void) drv = driver_find("cx18", &pci_bus_type); ret = driver_for_each_device(drv, NULL, NULL, cx18_alsa_exit_callback); - put_driver(drv); cx18_ext_init = NULL; printk(KERN_INFO "cx18-alsa: module unload complete\n"); diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c index d0fbfcf..e5e7fa9 100644 --- a/drivers/media/video/ivtv/ivtvfb.c +++ b/drivers/media/video/ivtv/ivtvfb.c @@ -1293,7 +1293,6 @@ static int __init ivtvfb_init(void) drv = driver_find("ivtv", &pci_bus_type); err = driver_for_each_device(drv, NULL, ®istered, ivtvfb_callback_init); - put_driver(drv); if (!registered) { printk(KERN_ERR "ivtvfb: no cards found\n"); return -ENODEV; @@ -1310,7 +1309,6 @@ static void ivtvfb_cleanup(void) drv = driver_find("ivtv", &pci_bus_type); err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup); - put_driver(drv); } module_init(ivtvfb_init); diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.c b/drivers/media/video/s5p-fimc/fimc-mdevice.c index 8ea4ee1..63eccb5 100644 --- a/drivers/media/video/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/video/s5p-fimc/fimc-mdevice.c @@ -344,16 +344,13 @@ static int fimc_md_register_platform_entities(struct fimc_md *fmd) return -ENODEV; ret = driver_for_each_device(driver, NULL, fmd, fimc_register_callback); - put_driver(driver); if (ret) return ret; driver = driver_find(CSIS_DRIVER_NAME, &platform_bus_type); - if (driver) { + if (driver) ret = driver_for_each_device(driver, NULL, fmd, csis_register_callback); - put_driver(driver); - } return ret; } diff --git a/drivers/media/video/s5p-tv/mixer_video.c b/drivers/media/video/s5p-tv/mixer_video.c index 7884bae..f7ca5cc 100644 --- a/drivers/media/video/s5p-tv/mixer_video.c +++ b/drivers/media/video/s5p-tv/mixer_video.c @@ -58,7 +58,6 @@ static struct v4l2_subdev *find_and_register_subdev( } done: - put_driver(drv); return sd; } diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index f320f46..e8c42d6 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -915,9 +915,7 @@ static int phy_probe(struct device *dev) phydev = to_phy_device(dev); - /* Make sure the driver is held. - * XXX -- Is this correct? */ - drv = get_driver(phydev->dev.driver); + drv = phydev->dev.driver; phydrv = to_phy_driver(drv); phydev->drv = phydrv; @@ -957,8 +955,6 @@ static int phy_remove(struct device *dev) if (phydev->drv->remove) phydev->drv->remove(phydev); - - put_driver(dev->driver); phydev->drv = NULL; return 0; diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 3623d65..8d9616b 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -72,9 +72,7 @@ int pci_add_dynid(struct pci_driver *drv, list_add_tail(&dynid->node, &drv->dynids.list); spin_unlock(&drv->dynids.lock); - get_driver(&drv->driver); retval = driver_attach(&drv->driver); - put_driver(&drv->driver); return retval; } @@ -190,43 +188,34 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count) static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id); static int -pci_create_newid_file(struct pci_driver *drv) +pci_create_newid_files(struct pci_driver *drv) { int error = 0; - if (drv->probe != NULL) - error = driver_create_file(&drv->driver, &driver_attr_new_id); - return error; -} - -static void pci_remove_newid_file(struct pci_driver *drv) -{ - driver_remove_file(&drv->driver, &driver_attr_new_id); -} -static int -pci_create_removeid_file(struct pci_driver *drv) -{ - int error = 0; - if (drv->probe != NULL) - error = driver_create_file(&drv->driver,&driver_attr_remove_id); + if (drv->probe != NULL) { + error = driver_create_file(&drv->driver, &driver_attr_new_id); + if (error == 0) { + error = driver_create_file(&drv->driver, + &driver_attr_remove_id); + if (error) + driver_remove_file(&drv->driver, + &driver_attr_new_id); + } + } return error; } -static void pci_remove_removeid_file(struct pci_driver *drv) +static void pci_remove_newid_files(struct pci_driver *drv) { driver_remove_file(&drv->driver, &driver_attr_remove_id); + driver_remove_file(&drv->driver, &driver_attr_new_id); } #else /* !CONFIG_HOTPLUG */ -static inline int pci_create_newid_file(struct pci_driver *drv) +static inline int pci_create_newid_files(struct pci_driver *drv) { return 0; } -static inline void pci_remove_newid_file(struct pci_driver *drv) {} -static inline int pci_create_removeid_file(struct pci_driver *drv) -{ - return 0; -} -static inline void pci_remove_removeid_file(struct pci_driver *drv) {} +static inline void pci_remove_newid_files(struct pci_driver *drv) {} #endif /** @@ -1138,18 +1127,12 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner, if (error) goto out; - error = pci_create_newid_file(drv); + error = pci_create_newid_files(drv); if (error) goto out_newid; - - error = pci_create_removeid_file(drv); - if (error) - goto out_removeid; out: return error; -out_removeid: - pci_remove_newid_file(drv); out_newid: driver_unregister(&drv->driver); goto out; @@ -1168,8 +1151,7 @@ out_newid: void pci_unregister_driver(struct pci_driver *drv) { - pci_remove_removeid_file(drv); - pci_remove_newid_file(drv); + pci_remove_newid_files(drv); driver_unregister(&drv->driver); pci_free_dynids(drv); } diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index 7cf3d2f..98387ca 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -593,7 +593,7 @@ static pci_ers_result_t pcifront_common_process(int cmd, } pdrv = pcidev->driver; - if (get_driver(&pdrv->driver)) { + if (pdrv) { if (pdrv->err_handler && pdrv->err_handler->error_detected) { dev_dbg(&pcidev->dev, "trying to call AER service\n"); @@ -623,7 +623,6 @@ static pci_ers_result_t pcifront_common_process(int cmd, } } } - put_driver(&pdrv->driver); } if (!flag) result = PCI_ERS_RESULT_NONE; diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 749c2a1..249b889 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -127,10 +127,7 @@ pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) list_add_tail(&dynid->node, &pdrv->dynids.list); mutex_unlock(&pdrv->dynids.lock); - if (get_driver(&pdrv->drv)) { - retval = driver_attach(&pdrv->drv); - put_driver(&pdrv->drv); - } + retval = driver_attach(&pdrv->drv); if (retval) return retval; @@ -160,6 +157,11 @@ pcmcia_create_newid_file(struct pcmcia_driver *drv) return error; } +static void +pcmcia_remove_newid_file(struct pcmcia_driver *drv) +{ + driver_remove_file(&drv->drv, &driver_attr_new_id); +} /** * pcmcia_register_driver - register a PCMCIA driver with the bus core @@ -204,6 +206,7 @@ EXPORT_SYMBOL(pcmcia_register_driver); void pcmcia_unregister_driver(struct pcmcia_driver *driver) { pr_debug("unregistering driver %s\n", driver->name); + pcmcia_remove_newid_file(driver); driver_unregister(&driver->drv); pcmcia_free_dynids(driver); } diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 4f1989d..5f1dc6f 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -580,7 +580,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver) struct device *dev; /* We don't want ccwgroup devices to live longer than their driver. */ - get_driver(&cdriver->driver); while ((dev = driver_find_device(&cdriver->driver, NULL, NULL, __ccwgroup_match_all))) { struct ccwgroup_device *gdev = to_ccwgroupdev(dev); @@ -592,7 +591,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver) mutex_unlock(&gdev->reg_mutex); put_device(dev); } - put_driver(&cdriver->driver); driver_unregister(&cdriver->driver); } EXPORT_SYMBOL(ccwgroup_driver_unregister); diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 4726985..02d0152 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1676,15 +1676,9 @@ struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv, const char *bus_id) { struct device *dev; - struct device_driver *drv; - drv = get_driver(&cdrv->driver); - if (!drv) - return NULL; - - dev = driver_find_device(drv, NULL, (void *)bus_id, + dev = driver_find_device(&cdrv->driver, NULL, (void *)bus_id, __ccwdev_check_busid); - put_driver(drv); return dev ? to_ccwdev(dev) : NULL; } diff --git a/drivers/s390/net/smsgiucv_app.c b/drivers/s390/net/smsgiucv_app.c index 4d2ea40..32515a2 100644 --- a/drivers/s390/net/smsgiucv_app.c +++ b/drivers/s390/net/smsgiucv_app.c @@ -168,7 +168,7 @@ static int __init smsgiucv_app_init(void) rc = dev_set_name(smsg_app_dev, KMSG_COMPONENT); if (rc) { kfree(smsg_app_dev); - goto fail_put_driver; + goto fail; } smsg_app_dev->bus = &iucv_bus; smsg_app_dev->parent = iucv_root; @@ -177,7 +177,7 @@ static int __init smsgiucv_app_init(void) rc = device_register(smsg_app_dev); if (rc) { put_device(smsg_app_dev); - goto fail_put_driver; + goto fail; } /* convert sender to uppercase characters */ @@ -191,12 +191,11 @@ static int __init smsgiucv_app_init(void) rc = smsg_register_callback(SMSG_PREFIX, smsg_app_callback); if (rc) { device_unregister(smsg_app_dev); - goto fail_put_driver; + goto fail; } rc = 0; -fail_put_driver: - put_driver(smsgiucv_drv); +fail: return rc; } module_init(smsgiucv_app_init); diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index bb6317f..ff109ae 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -140,19 +140,6 @@ static void ssb_device_put(struct ssb_device *dev) put_device(dev->dev); } -static inline struct ssb_driver *ssb_driver_get(struct ssb_driver *drv) -{ - if (drv) - get_driver(&drv->drv); - return drv; -} - -static inline void ssb_driver_put(struct ssb_driver *drv) -{ - if (drv) - put_driver(&drv->drv); -} - static int ssb_device_resume(struct device *dev) { struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); @@ -250,11 +237,9 @@ int ssb_devices_freeze(struct ssb_bus *bus, struct ssb_freeze_context *ctx) ssb_device_put(sdev); continue; } - sdrv = ssb_driver_get(drv_to_ssb_drv(sdev->dev->driver)); - if (!sdrv || SSB_WARN_ON(!sdrv->remove)) { - ssb_device_put(sdev); + sdrv = drv_to_ssb_drv(sdev->dev->driver); + if (SSB_WARN_ON(!sdrv->remove)) continue; - } sdrv->remove(sdev); ctx->device_frozen[i] = 1; } @@ -293,7 +278,6 @@ int ssb_devices_thaw(struct ssb_freeze_context *ctx) dev_name(sdev->dev)); result = err; } - ssb_driver_put(sdrv); ssb_device_put(sdev); } diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index d40ff95..4fee024 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -71,10 +71,7 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids, list_add_tail(&dynid->node, &dynids->list); spin_unlock(&dynids->lock); - if (get_driver(driver)) { - retval = driver_attach(driver); - put_driver(driver); - } + retval = driver_attach(driver); if (retval) return retval; @@ -132,43 +129,39 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count) } static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id); -static int usb_create_newid_file(struct usb_driver *usb_drv) +static int usb_create_newid_files(struct usb_driver *usb_drv) { int error = 0; if (usb_drv->no_dynamic_id) goto exit; - if (usb_drv->probe != NULL) + if (usb_drv->probe != NULL) { error = driver_create_file(&usb_drv->drvwrap.driver, &driver_attr_new_id); + if (error == 0) { + error = driver_create_file(&usb_drv->drvwrap.driver, + &driver_attr_remove_id); + if (error) + driver_remove_file(&usb_drv->drvwrap.driver, + &driver_attr_new_id); + } + } exit: return error; } -static void usb_remove_newid_file(struct usb_driver *usb_drv) +static void usb_remove_newid_files(struct usb_driver *usb_drv) { if (usb_drv->no_dynamic_id) return; - if (usb_drv->probe != NULL) + if (usb_drv->probe != NULL) { driver_remove_file(&usb_drv->drvwrap.driver, - &driver_attr_new_id); -} - -static int -usb_create_removeid_file(struct usb_driver *drv) -{ - int error = 0; - if (drv->probe != NULL) - error = driver_create_file(&drv->drvwrap.driver, &driver_attr_remove_id); - return error; -} - -static void usb_remove_removeid_file(struct usb_driver *drv) -{ - driver_remove_file(&drv->drvwrap.driver, &driver_attr_remove_id); + driver_remove_file(&usb_drv->drvwrap.driver, + &driver_attr_new_id); + } } static void usb_free_dynids(struct usb_driver *usb_drv) @@ -183,22 +176,12 @@ static void usb_free_dynids(struct usb_driver *usb_drv) spin_unlock(&usb_drv->dynids.lock); } #else -static inline int usb_create_newid_file(struct usb_driver *usb_drv) +static inline int usb_create_newid_files(struct usb_driver *usb_drv) { return 0; } -static void usb_remove_newid_file(struct usb_driver *usb_drv) -{ -} - -static int -usb_create_removeid_file(struct usb_driver *drv) -{ - return 0; -} - -static void usb_remove_removeid_file(struct usb_driver *drv) +static void usb_remove_newid_files(struct usb_driver *usb_drv) { } @@ -875,22 +858,16 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner, usbfs_update_special(); - retval = usb_create_newid_file(new_driver); + retval = usb_create_newid_files(new_driver); if (retval) goto out_newid; - retval = usb_create_removeid_file(new_driver); - if (retval) - goto out_removeid; - pr_info("%s: registered new interface driver %s\n", usbcore_name, new_driver->name); out: return retval; -out_removeid: - usb_remove_newid_file(new_driver); out_newid: driver_unregister(&new_driver->drvwrap.driver); @@ -917,10 +894,9 @@ void usb_deregister(struct usb_driver *driver) pr_info("%s: deregistering interface driver %s\n", usbcore_name, driver->name); - usb_remove_removeid_file(driver); - usb_remove_newid_file(driver); - usb_free_dynids(driver); + usb_remove_newid_files(driver); driver_unregister(&driver->drvwrap.driver); + usb_free_dynids(driver); usbfs_update_special(); } |
