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PCI: PCIe AER: Introduce pci_aer_available() 

Introduce a function allowing the caller to check whether to try to
enable PCIe AER.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Rafael J. Wysocki 2010-08-21 01:50:52 +02:00 committed by Jesse Barnes
parent 23b90cfd7b
commit f1a7bfaf6b
2 changed files with 8 additions and 3 deletions
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2
drivers/pci/pci.h
View File

@ -140,8 +140,10 @@ static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
#ifdef CONFIG_PCIEAER
void pci_no_aer(void);
bool pci_aer_available(void);
#else
static inline void pci_no_aer(void) { }
static inline bool pci_aer_available(void) { return false; }
#endif
static inline int pci_no_d1d2(struct pci_dev *dev)

9
drivers/pci/pcie/aer/aerdrv.c
View File

@ -72,6 +72,11 @@ void pci_no_aer(void)
pcie_aer_disable = 1; /* has priority over 'forceload' */
}
bool pci_aer_available(void)
{
return !pcie_aer_disable && pci_msi_enabled();
}
static int set_device_error_reporting(struct pci_dev *dev, void *data)
{
bool enable = *((bool *)data);
@ -411,9 +416,7 @@ static void aer_error_resume(struct pci_dev *dev)
*/
static int __init aer_service_init(void)
{
if (pcie_aer_disable)
return -ENXIO;
if (!pci_msi_enabled())
if (!pci_aer_available())
return -ENXIO;
return pcie_port_service_register(&aerdriver);
}