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sfc: Reschedule any resets scheduled inside efx_pm_freeze()

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efx_pm_freeze() sets efx->state = STATE_FINI, which means
efx_reset_work() will abort any scheduled resets.

efx_pm_thaw() should reschedule efx_reset_work() again,
since a freeze/thaw will not have reset the hardware.

This bug was spotted by inspection - there is no real world example of
this happening.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Hodgson 2010-06-01 11:17:24 +00:00 committed by David S. Miller
parent 3bd9303500
commit 319ba649af
1 changed files with 6 additions and 0 deletions
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6
drivers/net/sfc/efx.c
View file

@ -1886,6 +1886,9 @@ static void efx_reset_work(struct work_struct *data)
{
struct efx_nic *efx = container_of(data, struct efx_nic, reset_work);
if (efx->reset_pending == RESET_TYPE_NONE)
return;
/* If we're not RUNNING then don't reset. Leave the reset_pending
* flag set so that efx_pci_probe_main will be retried */
if (efx->state != STATE_RUNNING) {
@ -2332,6 +2335,9 @@ static int efx_pm_thaw(struct device *dev)
efx->type->resume_wol(efx);
/* Reschedule any quenched resets scheduled during efx_pm_freeze() */
queue_work(reset_workqueue, &efx->reset_work);
return 0;
}