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powerpc/eeh: Don't collect logs on PE with blocked config space

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When the PE's config space is marked as blocked, PCI config read
requests always return 0xFF's. It's pointless to collect logs in
this case.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan 2014-10-01 17:07:54 +10:00 committed by Michael Ellerman
parent b6541db139
commit c59004cc83
1 changed files with 7 additions and 0 deletions
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7
arch/powerpc/kernel/eeh.c
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@ -257,6 +257,13 @@ static void *eeh_dump_pe_log(void *data, void *flag)
struct eeh_dev *edev, *tmp;
size_t *plen = flag;
/* If the PE's config space is blocked, 0xFF's will be
* returned. It's pointless to collect the log in this
* case.
*/
if (pe->state & EEH_PE_CFG_BLOCKED)
return NULL;
eeh_pe_for_each_dev(pe, edev, tmp)
*plen += eeh_dump_dev_log(edev, pci_regs_buf + *plen,
EEH_PCI_REGS_LOG_LEN - *plen);