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[SCSI] mpt2sas: fix crash due to Watchdog is active while OS in standby mode

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Fix oops ocurring at hibernation time.  This oops was due to the firmware fault
watchdog timer still running after we freed resources. To fix the issue we need
to terminate the watchdog timer at hibernation time.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Kashyap, Desai
2009-08-07 19:37:59 +05:30
committed by James Bottomley
parent 6bd4e1e4d6
commit e4750c989f
3 changed files with 64 additions and 28 deletions
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2
drivers/scsi/mpt2sas/mpt2sas_scsih.c
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@@ -5824,6 +5824,7 @@ _scsih_suspend(struct pci_dev *pdev, pm_message_t state)
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
u32 device_state;
mpt2sas_base_stop_watchdog(ioc);
flush_scheduled_work();
scsi_block_requests(shost);
device_state = pci_choose_state(pdev, state);
@@ -5866,6 +5867,7 @@ _scsih_resume(struct pci_dev *pdev)
mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, SOFT_RESET);
scsi_unblock_requests(shost);
mpt2sas_base_start_watchdog(ioc);
return 0;
}
#endif /* CONFIG_PM */