From 5a0e3ad6af8660be21ca98a971cd00f331318c05 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 24 Mar 2010 17:04:11 +0900 Subject: include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn --- drivers/pci/access.c | 1 + drivers/pci/bus.c | 1 + drivers/pci/dmar.c | 1 + drivers/pci/hotplug/acpi_pcihp.c | 1 + drivers/pci/hotplug/acpiphp_glue.c | 1 + drivers/pci/hotplug/acpiphp_ibm.c | 1 + drivers/pci/hotplug/cpqphp_sysfs.c | 1 + drivers/pci/hotplug/fakephp.c | 1 + drivers/pci/hotplug/pci_hotplug_core.c | 1 - drivers/pci/hotplug/pciehp_acpi.c | 1 + drivers/pci/hotplug/pciehp_core.c | 1 + drivers/pci/hotplug/pciehp_ctrl.c | 1 + drivers/pci/hotplug/pciehp_hpc.c | 1 + drivers/pci/hotplug/rpaphp_core.c | 1 - drivers/pci/hotplug/sgi_hotplug.c | 1 + drivers/pci/hotplug/shpchp_core.c | 1 + drivers/pci/hotplug/shpchp_ctrl.c | 1 + drivers/pci/htirq.c | 1 - drivers/pci/intr_remapping.c | 1 + drivers/pci/ioapic.c | 1 + drivers/pci/iov.c | 1 + drivers/pci/msi.c | 1 + drivers/pci/pci-sysfs.c | 1 + drivers/pci/pci.c | 1 + drivers/pci/pcie/aer/aer_inject.c | 1 + drivers/pci/pcie/aer/aerdrv.c | 1 + drivers/pci/pcie/aer/aerdrv_core.c | 1 + drivers/pci/pcie/pme/pcie_pme.c | 1 + drivers/pci/pcie/portdrv_pci.c | 1 - drivers/pci/proc.c | 1 + drivers/pci/search.c | 1 + drivers/pci/slot.c | 1 + 32 files changed, 28 insertions(+), 4 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/access.c b/drivers/pci/access.c index db23200..2f646fe 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -2,6 +2,7 @@ #include #include #include +#include #include #include diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 26301cb..628ea20 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "pci.h" diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index 83aae47..33ead97 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -35,6 +35,7 @@ #include #include #include +#include #define PREFIX "DMAR: " diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c index 3c76fc6..45fcc1e 100644 --- a/drivers/pci/hotplug/acpi_pcihp.c +++ b/drivers/pci/hotplug/acpi_pcihp.c @@ -32,6 +32,7 @@ #include #include #include +#include #define MY_NAME "acpi_pcihp" diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index b5dad9f3..cb23aa2 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -47,6 +47,7 @@ #include #include #include +#include #include "../pci.h" #include "acpiphp.h" diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c index aa5df48..6ecbfb2 100644 --- a/drivers/pci/hotplug/acpiphp_ibm.c +++ b/drivers/pci/hotplug/acpiphp_ibm.c @@ -26,6 +26,7 @@ */ #include +#include #include #include #include diff --git a/drivers/pci/hotplug/cpqphp_sysfs.c b/drivers/pci/hotplug/cpqphp_sysfs.c index e6089bd..5621532 100644 --- a/drivers/pci/hotplug/cpqphp_sysfs.c +++ b/drivers/pci/hotplug/cpqphp_sysfs.c @@ -28,6 +28,7 @@ #include #include +#include #include #include #include diff --git a/drivers/pci/hotplug/fakephp.c b/drivers/pci/hotplug/fakephp.c index 0a894ef..5317e4d7 100644 --- a/drivers/pci/hotplug/fakephp.c +++ b/drivers/pci/hotplug/fakephp.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "../pci.h" struct legacy_slot { diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c index 728b119..6d2eea9 100644 --- a/drivers/pci/hotplug/pci_hotplug_core.c +++ b/drivers/pci/hotplug/pci_hotplug_core.c @@ -33,7 +33,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/pci/hotplug/pciehp_acpi.c b/drivers/pci/hotplug/pciehp_acpi.c index b09b083..1f4000a 100644 --- a/drivers/pci/hotplug/pciehp_acpi.c +++ b/drivers/pci/hotplug/pciehp_acpi.c @@ -26,6 +26,7 @@ #include #include #include +#include #include "pciehp.h" #define PCIEHP_DETECT_PCIE (0) diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index 920f820..3588ea6 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include "pciehp.h" diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index 9a7f247..8f58148 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include "../pci.h" diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 9665d6b..0cd4204 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -36,6 +36,7 @@ #include #include #include +#include #include "../pci.h" #include "pciehp.h" diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index dcaae72..7197022 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -27,7 +27,6 @@ #include #include #include -#include #include #include #include /* for eeh_add_device() */ diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c index 8aebe1e9..72d507b 100644 --- a/drivers/pci/hotplug/sgi_hotplug.c +++ b/drivers/pci/hotplug/sgi_hotplug.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c index a506229..a7bd504 100644 --- a/drivers/pci/hotplug/shpchp_core.c +++ b/drivers/pci/hotplug/shpchp_core.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include "shpchp.h" diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c index 3bba0c0..3387fbf 100644 --- a/drivers/pci/hotplug/shpchp_ctrl.c +++ b/drivers/pci/hotplug/shpchp_ctrl.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include "../pci.h" diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c index 737a1c4..98abf8b 100644 --- a/drivers/pci/htirq.c +++ b/drivers/pci/htirq.c @@ -10,7 +10,6 @@ #include #include #include -#include #include /* Global ht irq lock. diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c index 95b8491..6ee98a5 100644 --- a/drivers/pci/intr_remapping.c +++ b/drivers/pci/intr_remapping.c @@ -1,6 +1,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/pci/ioapic.c b/drivers/pci/ioapic.c index fb9fdf4..203508b 100644 --- a/drivers/pci/ioapic.c +++ b/drivers/pci/ioapic.c @@ -18,6 +18,7 @@ #include #include +#include #include struct ioapic { diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 3e5ab2b..ce6a366 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -9,6 +9,7 @@ */ #include +#include #include #include #include diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index f9cf317..77b68ea 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "pci.h" #include "msi.h" diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 9976685..fad9398 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "pci.h" static int sysfs_initialized; /* = 0 */ diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 1531f3a..5ea587e 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c index 223052b..f8f425b 100644 --- a/drivers/pci/pcie/aer/aer_inject.c +++ b/drivers/pci/pcie/aer/aer_inject.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c index 21f215f..aa495ad 100644 --- a/drivers/pci/pcie/aer/aerdrv.c +++ b/drivers/pci/pcie/aer/aerdrv.c @@ -25,6 +25,7 @@ #include #include #include +#include #include "aerdrv.h" #include "../../pci.h" diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index c843a79..aceb04b 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "aerdrv.h" static int forceload; diff --git a/drivers/pci/pcie/pme/pcie_pme.c b/drivers/pci/pcie/pme/pcie_pme.c index 7b3cbff..aac285a 100644 --- a/drivers/pci/pcie/pme/pcie_pme.c +++ b/drivers/pci/pcie/pme/pcie_pme.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 127e8f1..3debed2 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -12,7 +12,6 @@ #include #include #include -#include #include #include #include diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c index 593bb84..449e890 100644 --- a/drivers/pci/proc.c +++ b/drivers/pci/proc.c @@ -6,6 +6,7 @@ #include #include +#include #include #include #include diff --git a/drivers/pci/search.c b/drivers/pci/search.c index 4a471dc..20d03f7 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -9,6 +9,7 @@ #include #include +#include #include #include #include "pci.h" diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index f75a44d..659eaa0 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include "pci.h" -- cgit v1.1 From 4352aa5bbf1d0080c2dcf904ce1e4be0a1cb5937 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 25 Mar 2010 13:03:30 -0700 Subject: PCI aerdrv: use correct bit defines and add 2ms delay to aer_root_reset While testing completion timeouts I found that hardware was not recovering. It looks like the hot reset was never being propagated to the endpoint devices on the bus due to the fact that we were clearing the bit too quickly. The documentation I have states that we should be transmitting hot reset TS1s for 2ms. To achieve this I have added a 2ms delay from the time we set the secondary bus reset bit to the time we clear it. In addition I changed the define used for the secondary bus reset bit to match the register define that was being used. Reviewed-by: Hidetoshi Seto Signed-off-by: Alexander Duyck Signed-off-by: Jesse Barnes --- drivers/pci/pcie/aer/aerdrv.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c index aa495ad..7a711ee 100644 --- a/drivers/pci/pcie/aer/aerdrv.c +++ b/drivers/pci/pcie/aer/aerdrv.c @@ -244,11 +244,17 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) /* Assert Secondary Bus Reset */ pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &p2p_ctrl); - p2p_ctrl |= PCI_CB_BRIDGE_CTL_CB_RESET; + p2p_ctrl |= PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl); + /* + * we should send hot reset message for 2ms to allow it time to + * propogate to all downstream ports + */ + msleep(2); + /* De-assert Secondary Bus Reset */ - p2p_ctrl &= ~PCI_CB_BRIDGE_CTL_CB_RESET; + p2p_ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl); /* -- cgit v1.1 From 45aa23b4cbd37408678c96cd113241860d3321f6 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 22 Apr 2010 09:02:43 -0600 Subject: PCI: revert broken device warning This reverts c519a5a7dab2d. That change added a warning about devices that didn't respond correctly when sizing BARs, which helped diagnose broken devices. But the test wasn't specific enough, so it also complained about working devices with zero-size BARs, e.g., https://bugzilla.kernel.org/show_bug.cgi?id=15822 Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- drivers/pci/probe.c | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 882bd8d..c82548a 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -174,19 +174,14 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, pci_read_config_dword(dev, pos, &sz); pci_write_config_dword(dev, pos, l); - if (!sz) - goto fail; /* BAR not implemented */ - /* * All bits set in sz means the device isn't working properly. - * If it's a memory BAR or a ROM, bit 0 must be clear; if it's - * an io BAR, bit 1 must be clear. + * If the BAR isn't implemented, all bits must be 0. If it's a + * memory BAR or a ROM, bit 0 must be clear; if it's an io BAR, bit + * 1 must be clear. */ - if (sz == 0xffffffff) { - dev_err(&dev->dev, "reg %x: invalid size %#x; broken device?\n", - pos, sz); + if (!sz || sz == 0xffffffff) goto fail; - } /* * I don't know how l can have all bits set. Copied from old code. @@ -249,17 +244,13 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, pos, res); } } else { - u32 size = pci_size(l, sz, mask); + sz = pci_size(l, sz, mask); - if (!size) { - dev_err(&dev->dev, "reg %x: invalid size " - "(l %#x sz %#x mask %#x); broken device?", - pos, l, sz, mask); + if (!sz) goto fail; - } res->start = l; - res->end = l + size; + res->end = l + sz; dev_printk(KERN_DEBUG, &dev->dev, "reg %x: %pR\n", pos, res); } -- cgit v1.1 From cc2893b6af5265baa1d68b17b136cffca9e40cfa Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Thu, 22 Apr 2010 09:30:51 -0400 Subject: PCI: Ensure we re-enable devices on resume If the firmware puts a device back into D0 state at resume time, we'll update its state in resume_noirq and thus skip the platform resume code. Calling that code twice should be safe and we ought to avoid getting to that point anyway, so remove the check and also allow the platform pci code to be called for D0. Fixes USB not being powered after resume on recent Lenovo machines. Acked-by: Alex Chiang Acked-by: Rafael J. Wysocki Signed-off-by: Matthew Garrett Signed-off-by: Jesse Barnes --- drivers/pci/pci.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 5ea587e..3749912 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -679,7 +679,7 @@ static void __pci_start_power_transition(struct pci_dev *dev, pci_power_t state) */ int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state) { - return state > PCI_D0 ? + return state >= PCI_D0 ? pci_platform_power_transition(dev, state) : -EINVAL; } EXPORT_SYMBOL_GPL(__pci_complete_power_transition); @@ -716,10 +716,6 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) */ return 0; - /* Check if we're already there */ - if (dev->current_state == state) - return 0; - __pci_start_power_transition(dev, state); /* This device is quirked not to be put into D3, so -- cgit v1.1