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[PATCH] powerpc/pseries: Increment fail counter in PCI recovery

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When a PCI device driver does not support PCI error recovery,
the powerpc/pseries code takes a walk through a branch of code
that resets the failure counter. Because of this, if a broken
PCI card is present, the kernel will attempt to reset it an
infinite number of times. (This is annoying but mostly harmless:
each reset takes about 10-20 seconds, and uses almost no CPU time).

This patch preserves the failure count across resets.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Linas Vepstas 2006-04-28 17:39:38 -05:00 committed by Paul Mackerras
parent 877fbae3d5
commit 4240545661
1 changed files with 6 additions and 1 deletions
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7
arch/powerpc/platforms/pseries/eeh_driver.c
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@ -201,7 +201,11 @@ static void eeh_report_failure(struct pci_dev *dev, void *userdata)
static int eeh_reset_device (struct pci_dn *pe_dn, struct pci_bus *bus)
{
int rc;
int cnt, rc;
/* pcibios will clear the counter; save the value */
cnt = pe_dn->eeh_freeze_count;
if (bus)
pcibios_remove_pci_devices(bus);
@ -240,6 +244,7 @@ static int eeh_reset_device (struct pci_dn *pe_dn, struct pci_bus *bus)
ssleep (5);
pcibios_add_pci_devices(bus);
}
pe_dn->eeh_freeze_count = cnt;
return 0;
}