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Merge branch 'pci/error'

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- Clear AER "multiple errors" bits to avoid race that left them set forever
  (Kuppuswamy Sathyanarayanan)

* pci/error:
  PCI/AER: Clear MULTI_ERR_COR/UNCOR_RCV bits
This commit is contained in:
Bjorn Helgaas 2022-05-24 16:42:21 -05:00
commit 55fd033bae
1 changed files with 6 additions and 1 deletions
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7
drivers/pci/pcie/aer.c
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@ -101,6 +101,11 @@ struct aer_stats {
#define ERR_COR_ID(d) (d & 0xffff) #define ERR_COR_ID(d) (d & 0xffff)
#define ERR_UNCOR_ID(d) (d >> 16) #define ERR_UNCOR_ID(d) (d >> 16)
#define AER_ERR_STATUS_MASK (PCI_ERR_ROOT_UNCOR_RCV | \
PCI_ERR_ROOT_COR_RCV | \
PCI_ERR_ROOT_MULTI_COR_RCV | \
PCI_ERR_ROOT_MULTI_UNCOR_RCV)
static int pcie_aer_disable; static int pcie_aer_disable;
static pci_ers_result_t aer_root_reset(struct pci_dev *dev); static pci_ers_result_t aer_root_reset(struct pci_dev *dev);
@ -1196,7 +1201,7 @@ static irqreturn_t aer_irq(int irq, void *context)
struct aer_err_source e_src = {}; struct aer_err_source e_src = {};
pci_read_config_dword(rp, aer + PCI_ERR_ROOT_STATUS, &e_src.status); pci_read_config_dword(rp, aer + PCI_ERR_ROOT_STATUS, &e_src.status);
if (!(e_src.status & (PCI_ERR_ROOT_UNCOR_RCV|PCI_ERR_ROOT_COR_RCV))) if (!(e_src.status & AER_ERR_STATUS_MASK))
return IRQ_NONE; return IRQ_NONE;
pci_read_config_dword(rp, aer + PCI_ERR_ROOT_ERR_SRC, &e_src.id); pci_read_config_dword(rp, aer + PCI_ERR_ROOT_ERR_SRC, &e_src.id);