4.19-stable review patch. If anyone has any objections, please let me know.
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From: Quinn Tran quinn.tran@cavium.com
[ Upstream commit 710bc78f829d014eca95ed7ccc4052bc064b1320 ]
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: b2000805a975 ("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 --- drivers/scsi/qla2xxx/qla_mbx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -493,7 +493,7 @@ qla2x00_mailbox_command(scsi_qla_host_t 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");