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PCI: fix AER capability check 

The 'use pci_find_ext_capability everywhere' cleanup brought a new bug,
which makes the AER stop working.  Fix it by actually using find_ext_cap
instead of just find_cap.  Drop the unused config space size define while
we're at it.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Yu Zhao 2008-10-19 20:35:20 +08:00 committed by Jesse Barnes
parent 0927678f55
commit 270c66be9b
4 changed files with 5 additions and 12 deletions
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11
Documentation/PCI/pcieaer-howto.txt
View File

@ -203,22 +203,17 @@ to mmio_enabled.
3.3 helper functions 3.3 helper functions
3.3.1 int pci_find_aer_capability(struct pci_dev *dev); 3.3.1 int pci_enable_pcie_error_reporting(struct pci_dev *dev);
pci_find_aer_capability locates the PCI Express AER capability
in the device configuration space. If the device doesn't support
PCI-Express AER, the function returns 0.
3.3.2 int pci_enable_pcie_error_reporting(struct pci_dev *dev);
pci_enable_pcie_error_reporting enables the device to send error pci_enable_pcie_error_reporting enables the device to send error
messages to root port when an error is detected. Note that devices messages to root port when an error is detected. Note that devices
don't enable the error reporting by default, so device drivers need don't enable the error reporting by default, so device drivers need
call this function to enable it. call this function to enable it.
3.3.3 int pci_disable_pcie_error_reporting(struct pci_dev *dev); 3.3.2 int pci_disable_pcie_error_reporting(struct pci_dev *dev);
pci_disable_pcie_error_reporting disables the device to send error pci_disable_pcie_error_reporting disables the device to send error
messages to root port when an error is detected. messages to root port when an error is detected.
3.3.4 int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev); 3.3.3 int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
pci_cleanup_aer_uncorrect_error_status cleanups the uncorrectable pci_cleanup_aer_uncorrect_error_status cleanups the uncorrectable
error status register. error status register.

4
drivers/pci/pcie/aer/aerdrv_core.c
View File

@ -33,11 +33,11 @@ int pci_enable_pcie_error_reporting(struct pci_dev *dev)
u16 reg16 = 0; u16 reg16 = 0;
int pos; int pos;
pos = pci_find_capability(dev, PCI_CAP_ID_EXP); pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
if (!pos) if (!pos)
return -EIO; return -EIO;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
if (!pos) if (!pos)
return -EIO; return -EIO;

1
drivers/pci/pcie/portdrv.h
View File

@ -25,7 +25,6 @@
#define PCIE_CAPABILITIES_REG 0x2 #define PCIE_CAPABILITIES_REG 0x2
#define PCIE_SLOT_CAPABILITIES_REG 0x14 #define PCIE_SLOT_CAPABILITIES_REG 0x14
#define PCIE_PORT_DEVICE_MAXSERVICES 4 #define PCIE_PORT_DEVICE_MAXSERVICES 4
#define PCI_CFG_SPACE_SIZE 256
#define get_descriptor_id(type, service) (((type - 4) << 4) | service) #define get_descriptor_id(type, service) (((type - 4) << 4) | service)

1
include/linux/aer.h
View File

@ -10,7 +10,6 @@
#if defined(CONFIG_PCIEAER) #if defined(CONFIG_PCIEAER)
/* pci-e port driver needs this function to enable aer */ /* pci-e port driver needs this function to enable aer */
extern int pci_enable_pcie_error_reporting(struct pci_dev *dev); extern int pci_enable_pcie_error_reporting(struct pci_dev *dev);
extern int pci_find_aer_capability(struct pci_dev *dev);
extern int pci_disable_pcie_error_reporting(struct pci_dev *dev); extern int pci_disable_pcie_error_reporting(struct pci_dev *dev);
extern int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev); extern int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev);
#else #else