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scsi: qla2xxx: Fix recursive mailbox timeout

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[ Upstream commit 710bc78f82 ]

This patch prevents user space mailbox request from doing chip reset if the
mailbox timed out. The chip reset is only reserved for the DPC thread to
ensure all mailbox requests are flushed properly. The DPC thread is
responsible for the flushing all MBs and chip reset.

Fixes: b2000805a9 ("scsi: qla2xxx: Flush mailbox commands on chip reset")
Cc: <stable@ger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Quinn Tran
2018-09-26 22:05:16 -07:00
committed by Greg Kroah-Hartman
parent 974c431260
commit 4d50bad138
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/qla2xxx/qla_mbx.c
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@@ -493,7 +493,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
} else if (!abort_active) {
} else if (current == ha->dpc_thread) {
/* call abort directly since we are in the DPC thread */
ql_dbg(ql_dbg_mbx, vha, 0x101d,
"Timeout, calling abort_isp.\n");