[SCSI] mpt2sas: Freeze the sdev IO queue when firmware sends internal dev reset

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When receiving the MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET event,
the driver will set the tm_busy flag in the sdev private host data, When
tm_busy flag is set, the driver will return SCSI_MLQUEUE_DEVICE_BUSY,
effectly freezing the IO to the device. The tm_busy flag is cleared with the
MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET event.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

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Kashyap, Desai 2009-09-23 17:35:41 +05:30 • committed by James Bottomley

parent 463217bfec

commit 8ffc457ed6

1 changed files with 33 additions and 1 deletions

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drivers/scsi/mpt2sas/mpt2sas_scsih.c

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