diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/base/attribute_container.c | 2 | ||||
| -rw-r--r-- | drivers/base/bus.c | 14 | ||||
| -rw-r--r-- | drivers/base/core.c | 8 | ||||
| -rw-r--r-- | drivers/base/devres.c | 4 | ||||
| -rw-r--r-- | drivers/base/firmware_class.c | 52 | ||||
| -rw-r--r-- | drivers/base/platform.c | 4 |
7 files changed, 53 insertions, 38 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index b34b5cd..c8b4539 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -57,7 +57,7 @@ config DEVTMPFS_MOUNT on the rootfs is completely empty. config STANDALONE - bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL + bool "Select only drivers that don't need compile-time external firmware" default y help Select this option if you don't have magic firmware for drivers that @@ -185,7 +185,6 @@ config DMA_SHARED_BUFFER bool default n select ANON_INODES - depends on EXPERIMENTAL help This option enables the framework for buffer-sharing between multiple drivers. A buffer is associated with a file using driver @@ -193,8 +192,8 @@ config DMA_SHARED_BUFFER driver. config CMA - bool "Contiguous Memory Allocator (EXPERIMENTAL)" - depends on HAVE_DMA_CONTIGUOUS && HAVE_MEMBLOCK && EXPERIMENTAL + bool "Contiguous Memory Allocator" + depends on HAVE_DMA_CONTIGUOUS && HAVE_MEMBLOCK select MIGRATION select MEMORY_ISOLATION help diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c index 8fc200b..d78b204 100644 --- a/drivers/base/attribute_container.c +++ b/drivers/base/attribute_container.c @@ -158,7 +158,7 @@ attribute_container_add_device(struct device *dev, ic = kzalloc(sizeof(*ic), GFP_KERNEL); if (!ic) { - dev_printk(KERN_ERR, dev, "failed to allocate class container\n"); + dev_err(dev, "failed to allocate class container\n"); continue; } diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 181ed26..24eb078 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -164,8 +164,6 @@ static const struct kset_uevent_ops bus_uevent_ops = { static struct kset *bus_kset; - -#ifdef CONFIG_HOTPLUG /* Manually detach a device from its associated driver. */ static ssize_t driver_unbind(struct device_driver *drv, const char *buf, size_t count) @@ -252,7 +250,6 @@ static ssize_t store_drivers_probe(struct bus_type *bus, return -EINVAL; return count; } -#endif static struct device *next_device(struct klist_iter *i) { @@ -618,11 +615,6 @@ static void driver_remove_attrs(struct bus_type *bus, } } -#ifdef CONFIG_HOTPLUG -/* - * Thanks to drivers making their tables __devinit, we can't allow manual - * bind and unbind from userspace unless CONFIG_HOTPLUG is enabled. - */ static int __must_check add_bind_files(struct device_driver *drv) { int ret; @@ -666,12 +658,6 @@ static void remove_probe_files(struct bus_type *bus) bus_remove_file(bus, &bus_attr_drivers_autoprobe); bus_remove_file(bus, &bus_attr_drivers_probe); } -#else -static inline int add_bind_files(struct device_driver *drv) { return 0; } -static inline void remove_bind_files(struct device_driver *drv) {} -static inline int add_probe_files(struct bus_type *bus) { return 0; } -static inline void remove_probe_files(struct bus_type *bus) {} -#endif static ssize_t driver_uevent_store(struct device_driver *drv, const char *buf, size_t count) diff --git a/drivers/base/core.c b/drivers/base/core.c index 150a415..4179139 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1399,7 +1399,7 @@ struct root_device { struct module *owner; }; -inline struct root_device *to_root_device(struct device *d) +static inline struct root_device *to_root_device(struct device *d) { return container_of(d, struct root_device, dev); } @@ -1840,10 +1840,12 @@ void device_shutdown(void) pm_runtime_barrier(dev); if (dev->bus && dev->bus->shutdown) { - dev_dbg(dev, "shutdown\n"); + if (initcall_debug) + dev_info(dev, "shutdown\n"); dev->bus->shutdown(dev); } else if (dev->driver && dev->driver->shutdown) { - dev_dbg(dev, "shutdown\n"); + if (initcall_debug) + dev_info(dev, "shutdown\n"); dev->driver->shutdown(dev); } diff --git a/drivers/base/devres.c b/drivers/base/devres.c index 8731979..6683906 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -50,8 +50,8 @@ static void devres_log(struct device *dev, struct devres_node *node, const char *op) { if (unlikely(log_devres)) - dev_printk(KERN_ERR, dev, "DEVRES %3s %p %s (%lu bytes)\n", - op, node, node->name, (unsigned long)node->size); + dev_err(dev, "DEVRES %3s %p %s (%lu bytes)\n", + op, node, node->name, (unsigned long)node->size); } #else /* CONFIG_DEBUG_DEVRES */ #define set_node_dbginfo(node, n, s) do {} while (0) diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 8945f4e..d814603 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -143,7 +143,7 @@ struct fw_cache_entry { }; struct firmware_priv { - struct timer_list timeout; + struct delayed_work timeout_work; bool nowait; struct device dev; struct firmware_buf *buf; @@ -246,7 +246,6 @@ static void __fw_free_buf(struct kref *ref) __func__, buf->fw_id, buf, buf->data, (unsigned int)buf->size); - spin_lock(&fwc->lock); list_del(&buf->list); spin_unlock(&fwc->lock); @@ -263,19 +262,32 @@ static void __fw_free_buf(struct kref *ref) static void fw_free_buf(struct firmware_buf *buf) { - kref_put(&buf->ref, __fw_free_buf); + struct firmware_cache *fwc = buf->fwc; + spin_lock(&fwc->lock); + if (!kref_put(&buf->ref, __fw_free_buf)) + spin_unlock(&fwc->lock); } /* direct firmware loading support */ -static const char *fw_path[] = { +static char fw_path_para[256]; +static const char * const fw_path[] = { + fw_path_para, "/lib/firmware/updates/" UTS_RELEASE, "/lib/firmware/updates", "/lib/firmware/" UTS_RELEASE, "/lib/firmware" }; +/* + * Typical usage is that passing 'firmware_class.path=$CUSTOMIZED_PATH' + * from kernel command line because firmware_class is generally built in + * kernel instead of module. + */ +module_param_string(path, fw_path_para, sizeof(fw_path_para), 0644); +MODULE_PARM_DESC(path, "customized firmware image search path with a higher priority than default path"); + /* Don't inline this: 'struct kstat' is biggish */ -static noinline long fw_file_size(struct file *file) +static noinline_for_stack long fw_file_size(struct file *file) { struct kstat st; if (vfs_getattr(file->f_path.mnt, file->f_path.dentry, &st)) @@ -315,6 +327,11 @@ static bool fw_get_filesystem_firmware(struct firmware_buf *buf) for (i = 0; i < ARRAY_SIZE(fw_path); i++) { struct file *file; + + /* skip the unset customized path */ + if (!fw_path[i][0]) + continue; + snprintf(path, PATH_MAX, "%s/%s", fw_path[i], buf->fw_id); file = filp_open(path, O_RDONLY, 0); @@ -667,11 +684,18 @@ static struct bin_attribute firmware_attr_data = { .write = firmware_data_write, }; -static void firmware_class_timeout(u_long data) +static void firmware_class_timeout_work(struct work_struct *work) { - struct firmware_priv *fw_priv = (struct firmware_priv *) data; + struct firmware_priv *fw_priv = container_of(work, + struct firmware_priv, timeout_work.work); + mutex_lock(&fw_lock); + if (test_bit(FW_STATUS_DONE, &(fw_priv->buf->status))) { + mutex_unlock(&fw_lock); + return; + } fw_load_abort(fw_priv); + mutex_unlock(&fw_lock); } static struct firmware_priv * @@ -690,8 +714,8 @@ fw_create_instance(struct firmware *firmware, const char *fw_name, fw_priv->nowait = nowait; fw_priv->fw = firmware; - setup_timer(&fw_priv->timeout, - firmware_class_timeout, (u_long) fw_priv); + INIT_DELAYED_WORK(&fw_priv->timeout_work, + firmware_class_timeout_work); f_dev = &fw_priv->dev; @@ -858,7 +882,9 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent, dev_dbg(f_dev->parent, "firmware: direct-loading" " firmware %s\n", buf->fw_id); + mutex_lock(&fw_lock); set_bit(FW_STATUS_DONE, &buf->status); + mutex_unlock(&fw_lock); complete_all(&buf->completion); direct_load = 1; goto handle_fw; @@ -894,15 +920,14 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent, dev_set_uevent_suppress(f_dev, false); dev_dbg(f_dev, "firmware: requesting %s\n", buf->fw_id); if (timeout != MAX_SCHEDULE_TIMEOUT) - mod_timer(&fw_priv->timeout, - round_jiffies_up(jiffies + timeout)); + schedule_delayed_work(&fw_priv->timeout_work, timeout); kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD); } wait_for_completion(&buf->completion); - del_timer_sync(&fw_priv->timeout); + cancel_delayed_work_sync(&fw_priv->timeout_work); handle_fw: mutex_lock(&fw_lock); @@ -963,6 +988,9 @@ err_put_dev: * firmware image for this or any other device. * * Caller must hold the reference count of @device. + * + * The function can be called safely inside device's suspend and + * resume callback. **/ int request_firmware(const struct firmware **firmware_p, const char *name, diff --git a/drivers/base/platform.c b/drivers/base/platform.c index b2ee3bc..c0b8df3 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -45,7 +45,7 @@ EXPORT_SYMBOL_GPL(platform_bus); * be setup before the platform_notifier is called. So if a user needs to * manipulate any relevant information in the pdev_archdata they can do: * - * platform_devic_alloc() + * platform_device_alloc() * ... manipulate ... * platform_device_add() * @@ -123,7 +123,7 @@ struct resource *platform_get_resource_byname(struct platform_device *dev, EXPORT_SYMBOL_GPL(platform_get_resource_byname); /** - * platform_get_irq - get an IRQ for a device + * platform_get_irq_byname - get an IRQ for a device by name * @dev: platform device * @name: IRQ name */ |
