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PCI: output FW warning in pci_read/write_vpd 

pci_read/write_vpd() can fail due to a timeout.  Usually the command
times out because of firmware issues (incorrect vpd length, etc.) on the
PCI card.  Currently, the timeout occurs silently.

Output a message to the user indicating that they should check with
their vendor for new firmware.

Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Prarit Bhargava 2010-05-17 14:25:14 -04:00 committed by Jesse Barnes
parent ee6583f6e8
commit 5030718ee4
1 changed files with 6 additions and 1 deletions
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7
drivers/pci/access.c
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@ -220,8 +220,13 @@ static int pci_vpd_pci22_wait(struct pci_dev *dev)
return 0;
}
if (time_after(jiffies, timeout))
if (time_after(jiffies, timeout)) {
dev_printk(KERN_DEBUG, &dev->dev,
"vpd r/w failed. This is likely a firmware "
"bug on this device. Contact the card "
"vendor for a firmware update.");
return -ETIMEDOUT;
}
if (fatal_signal_pending(current))
return -EINTR;
if (!cond_resched())