From 0b49ec37a20bc7eb7178105aadaa8d1ecba825f8 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Sun, 8 Feb 2009 20:27:47 -0700 Subject: PCI/MSI: fix msi_mask() shift fix Hidetoshi Seto points out that commit bffac3c593eba1f9da3efd0199e49ea6558a40ce has wrong values in the array. Rather than correct the array, we can just use a bounds check and perform the calculation specified in the comment. As a bonus, this will not run off the end of the array if the device specifies an illegal value in the MSI capability. Signed-off-by: Matthew Wilcox Signed-off-by: Hidetoshi Seto Signed-off-by: Jesse Barnes --- drivers/pci/msi.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 44f15ff70c1d..baba2eb5367d 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -103,14 +103,12 @@ static void msix_set_enable(struct pci_dev *dev, int enable) } } -/* - * Essentially, this is ((1 << (1 << x)) - 1), but without the - * undefinedness of a << 32. - */ static inline __attribute_const__ u32 msi_mask(unsigned x) { - static const u32 mask[] = { 1, 2, 4, 0xf, 0xff, 0xffff, 0xffffffff }; - return mask[x]; + /* Don't shift by >= width of type */ + if (x >= 5) + return 0xffffffff; + return (1 << (1 << x)) - 1; } static void msix_flush_writes(struct irq_desc *desc) -- cgit v1.2.3 From 4cc59c721cba27a4644e29103afac0f91af8da3c Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 9 Feb 2009 09:31:20 -0800 Subject: PCI: fix rom.c kernel-doc warning Fix PCI kernel-doc warning: Warning(linux-2.6.29-rc4-git1/drivers/pci/rom.c:67): No description found for parameter 'pdev' Signed-off-by: Randy Dunlap cc: Jesse Barnes Signed-off-by: Jesse Barnes --- drivers/pci/rom.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/pci') diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index 29cbe47f219f..36864a935d68 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -55,6 +55,7 @@ void pci_disable_rom(struct pci_dev *pdev) /** * pci_get_rom_size - obtain the actual size of the ROM image + * @pdev: target PCI device * @rom: kernel virtual pointer to image of ROM * @size: size of PCI window * return: size of actual ROM image -- cgit v1.2.3 From b33bfdef24565fe54da91adf3cd4eea13488d7fc Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 9 Jan 2009 17:04:26 -0800 Subject: PCI: fix struct pci_platform_pm_ops kernel-doc Fix struct pci_platform_pm_ops kernel-doc notation. Signed-off-by: Randy Dunlap Signed-off-by: Jesse Barnes --- drivers/pci/pci.h | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 26ddf78ac300..07c0aa5275e6 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -16,21 +16,21 @@ extern int pci_mmap_fits(struct pci_dev *pdev, int resno, #endif /** - * Firmware PM callbacks + * struct pci_platform_pm_ops - Firmware PM callbacks * - * @is_manageable - returns 'true' if given device is power manageable by the - * platform firmware + * @is_manageable: returns 'true' if given device is power manageable by the + * platform firmware * - * @set_state - invokes the platform firmware to set the device's power state + * @set_state: invokes the platform firmware to set the device's power state * - * @choose_state - returns PCI power state of given device preferred by the - * platform; to be used during system-wide transitions from a - * sleeping state to the working state and vice versa + * @choose_state: returns PCI power state of given device preferred by the + * platform; to be used during system-wide transitions from a + * sleeping state to the working state and vice versa * - * @can_wakeup - returns 'true' if given device is capable of waking up the - * system from a sleeping state + * @can_wakeup: returns 'true' if given device is capable of waking up the + * system from a sleeping state * - * @sleep_wake - enables/disables the system wake up capability of given device + * @sleep_wake: enables/disables the system wake up capability of given device * * If given platform is generally capable of power managing PCI devices, all of * these callbacks are mandatory. -- cgit v1.2.3 From f5ddcac435b6c6133a9c137c345abef53b93cf55 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 9 Jan 2009 17:03:20 -0800 Subject: PCI: fix missing kernel-doc and typos Fix pci kernel-doc parameter missing notation, correct function name, and fix typo: Warning(linux-2.6.28-git10//drivers/pci/pci.c:1511): No description found for parameter 'exclusive' Signed-off-by: Randy Dunlap Signed-off-by: Jesse Barnes --- drivers/pci/pci.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index e3efe6b19ee7..6d6120007af4 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1540,16 +1540,21 @@ void pci_release_region(struct pci_dev *pdev, int bar) } /** - * pci_request_region - Reserved PCI I/O and memory resource + * __pci_request_region - Reserved PCI I/O and memory resource * @pdev: PCI device whose resources are to be reserved * @bar: BAR to be reserved * @res_name: Name to be associated with resource. + * @exclusive: whether the region access is exclusive or not * * Mark the PCI region associated with PCI device @pdev BR @bar as * being reserved by owner @res_name. Do not access any * address inside the PCI regions unless this call returns * successfully. * + * If @exclusive is set, then the region is marked so that userspace + * is explicitly not allowed to map the resource via /dev/mem or + * sysfs MMIO access. + * * Returns 0 on success, or %EBUSY on error. A warning * message is also printed on failure. */ @@ -1588,12 +1593,12 @@ err_out: } /** - * pci_request_region - Reserved PCI I/O and memory resource + * pci_request_region - Reserve PCI I/O and memory resource * @pdev: PCI device whose resources are to be reserved * @bar: BAR to be reserved - * @res_name: Name to be associated with resource. + * @res_name: Name to be associated with resource * - * Mark the PCI region associated with PCI device @pdev BR @bar as + * Mark the PCI region associated with PCI device @pdev BAR @bar as * being reserved by owner @res_name. Do not access any * address inside the PCI regions unless this call returns * successfully. -- cgit v1.2.3