From d407e32efe060afa2b9a797a91376ebc65b4ce11 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Wed, 1 Apr 2009 02:23:41 +0400 Subject: PCI: Fix oops in pci_vpd_truncate pci_vpd_truncate() should check for dev->vpd->attr, otherwise this might happen: sky2 driver version 1.22 Unable to handle kernel paging request for data at address 0x0000000c Faulting instruction address: 0xc01836fc Oops: Kernel access of bad area, sig: 11 [#1] [...] NIP [c01836fc] pci_vpd_truncate+0x38/0x40 LR [c029be18] sky2_probe+0x14c/0x518 Call Trace: [ef82bde0] [c029bda4] sky2_probe+0xd8/0x518 (unreliable) [ef82be20] [c018a11c] local_pci_probe+0x24/0x34 [ef82be30] [c018a14c] pci_call_probe+0x20/0x30 [ef82be50] [c018a330] __pci_device_probe+0x64/0x78 [ef82be60] [c018a44c] pci_device_probe+0x30/0x58 [ef82be80] [c01aa270] really_probe+0x78/0x1a0 [ef82bea0] [c01aa460] __driver_attach+0xa4/0xa8 [ef82bec0] [c01a96ac] bus_for_each_dev+0x60/0x9c [ef82bef0] [c01aa0b4] driver_attach+0x24/0x34 [ef82bf00] [c01a9e08] bus_add_driver+0x12c/0x1cc [ef82bf20] [c01aa87c] driver_register+0x6c/0x110 [ef82bf30] [c018a770] __pci_register_driver+0x4c/0x9c [ef82bf50] [c03782c8] sky2_init_module+0x30/0x40 [ef82bf60] [c0001dbc] do_one_initcall+0x34/0x1a0 [ef82bfd0] [c0362240] do_initcalls+0x38/0x58 This happens with CONFIG_SKY2=y, and "ip=on" kernel command line, so pci_vpd_truncate() is called before late_initcall(pci_sysfs_init), therefore ->attr isn't yet initialized. Acked-by: Stephen Hemminger Signed-off-by: Anton Vorontsov Signed-off-by: Jesse Barnes Signed-off-by: Linus Torvalds --- drivers/pci/access.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/pci/access.c') diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 381444794778..64dd7df90e62 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -356,7 +356,8 @@ int pci_vpd_truncate(struct pci_dev *dev, size_t size) return -EINVAL; dev->vpd->len = size; - dev->vpd->attr->size = size; + if (dev->vpd->attr) + dev->vpd->attr->size = size; return 0; } -- cgit v1.2.3-59-g8ed1b From cffb2fafb726c898fec1c5ae33717741f94fda83 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 10 Apr 2009 15:17:50 -0700 Subject: docbooks: add/fix PCI kernel-doc Add drivers/pci/*.c source files to DocBook/kernel-api.tmpl and update those pci/*.c source files that need kernel-doc fixes. Signed-off-by: Randy Dunlap Signed-off-by: Jesse Barnes --- Documentation/DocBook/kernel-api.tmpl | 6 +++++- drivers/pci/access.c | 4 ++-- drivers/pci/htirq.c | 1 + drivers/pci/pci-sysfs.c | 12 ++++++++---- drivers/pci/slot.c | 4 ++-- 5 files changed, 18 insertions(+), 9 deletions(-) (limited to 'drivers/pci/access.c') diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl index d6ac5d61820e..44b3def961a2 100644 --- a/Documentation/DocBook/kernel-api.tmpl +++ b/Documentation/DocBook/kernel-api.tmpl @@ -190,16 +190,20 @@ X!Ekernel/module.c !Edrivers/pci/pci.c !Edrivers/pci/pci-driver.c !Edrivers/pci/remove.c -!Edrivers/pci/pci-acpi.c !Edrivers/pci/search.c !Edrivers/pci/msi.c !Edrivers/pci/bus.c +!Edrivers/pci/access.c +!Edrivers/pci/irq.c +!Edrivers/pci/htirq.c !Edrivers/pci/probe.c +!Edrivers/pci/slot.c !Edrivers/pci/rom.c !Edrivers/pci/iov.c +!Idrivers/pci/pci-sysfs.c PCI Hotplug Support Library !Edrivers/pci/hotplug/pci_hotplug_core.c diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 64dd7df90e62..0f3706512686 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -87,8 +87,8 @@ EXPORT_SYMBOL(pci_read_vpd); * pci_write_vpd - Write entry to Vital Product Data * @dev: pci device struct * @pos: offset in vpd space - * @count: number of bytes to read - * @val: value to write + * @count: number of bytes to write + * @buf: buffer containing write data * */ ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf) diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c index bf7d6ce9bbb3..6808d8333ecc 100644 --- a/drivers/pci/htirq.c +++ b/drivers/pci/htirq.c @@ -158,6 +158,7 @@ int ht_create_irq(struct pci_dev *dev, int idx) /** * ht_destroy_irq - destroy an irq created with ht_create_irq + * @irq: irq to be destroyed * * This reverses ht_create_irq removing the specified irq from * existence. The irq should be free before this happens. diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index a7eb1b46a5a8..85ebd02a64a7 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -492,6 +492,7 @@ write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr, /** * pci_read_legacy_io - read byte(s) from legacy I/O port space * @kobj: kobject corresponding to file to read from + * @bin_attr: struct bin_attribute for this file * @buf: buffer to store results * @off: offset into legacy I/O port space * @count: number of bytes to read @@ -517,6 +518,7 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr, /** * pci_write_legacy_io - write byte(s) to legacy I/O port space * @kobj: kobject corresponding to file to read from + * @bin_attr: struct bin_attribute for this file * @buf: buffer containing value to be written * @off: offset into legacy I/O port space * @count: number of bytes to write @@ -733,9 +735,9 @@ pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr, /** * pci_remove_resource_files - cleanup resource files - * @dev: dev to cleanup + * @pdev: dev to cleanup * - * If we created resource files for @dev, remove them from sysfs and + * If we created resource files for @pdev, remove them from sysfs and * free their resources. */ static void @@ -793,9 +795,9 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) /** * pci_create_resource_files - create resource files in sysfs for @dev - * @dev: dev in question + * @pdev: dev in question * - * Walk the resources in @dev creating files for each resource available. + * Walk the resources in @pdev creating files for each resource available. */ static int pci_create_resource_files(struct pci_dev *pdev) { @@ -829,6 +831,7 @@ void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } /** * pci_write_rom - used to enable access to the PCI ROM display * @kobj: kernel object handle + * @bin_attr: struct bin_attribute for this file * @buf: user input * @off: file offset * @count: number of byte in input @@ -852,6 +855,7 @@ pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr, /** * pci_read_rom - read a PCI ROM * @kobj: kernel object handle + * @bin_attr: struct bin_attribute for this file * @buf: where to put the data we read from the ROM * @off: file offset * @count: number of bytes to read diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index 21189447e545..fe95ce20bcbd 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -264,8 +264,8 @@ EXPORT_SYMBOL_GPL(pci_create_slot); /** * pci_renumber_slot - update %struct pci_slot -> number - * @slot - %struct pci_slot to update - * @slot_nr - new number for slot + * @slot: &struct pci_slot to update + * @slot_nr: new number for slot * * The primary purpose of this interface is to allow callers who earlier * created a placeholder slot in pci_create_slot() by passing a -1 as -- cgit v1.2.3-59-g8ed1b