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sfc: Treat probe as unsuccessful if it scheduled a reset

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From: Steve Hodgson <shodgson@solarflare.com>

efx_pci_probe_main() can return success despite a reset being scheduled.
Catch this and retry or abort probe depending on the reset type.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Hodgson 2008-12-12 22:08:16 -08:00 committed by David S. Miller
parent ab37735870
commit fa402b2ea9
1 changed files with 11 additions and 2 deletions
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13
drivers/net/sfc/efx.c
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@ -2112,8 +2112,6 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
* we're in STATE_INIT. */
for (i = 0; i < 5; i++) {
rc = efx_pci_probe_main(efx);
if (rc == 0)
break;
/* Serialise against efx_reset(). No more resets will be
* scheduled since efx_stop_all() has been called, and we
@ -2121,6 +2119,17 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev,
* the rtnetlink or driverlink layers. */
cancel_work_sync(&efx->reset_work);
if (rc == 0) {
if (efx->reset_pending != RESET_TYPE_NONE) {
/* If there was a scheduled reset during
* probe, the NIC is probably hosed anyway */
efx_pci_remove_main(efx);
rc = -EIO;
} else {
break;
}
}
/* Retry if a recoverably reset event has been scheduled */
if ((efx->reset_pending != RESET_TYPE_INVISIBLE) &&
(efx->reset_pending != RESET_TYPE_ALL))