From: Finn Thain fthain@telegraphics.com.au
[ Upstream commit 7c8ed783c2faa1e3f741844ffac41340338ea0f4 ]
This is mostly needed because an AztecMonster II target has been observed disconnecting REQUEST SENSE commands and then failing to reselect properly.
Suggested-by: Michael Schmitz schmitzmic@gmail.com Tested-by: Michael Schmitz schmitzmic@gmail.com Signed-off-by: Finn Thain fthain@telegraphics.com.au Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/NCR5380.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index d600d3e94ba4a..144bb0c2b3064 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -938,6 +938,8 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd) int len; int err; bool ret = true; + bool can_disconnect = instance->irq != NO_IRQ && + cmd->cmnd[0] != REQUEST_SENSE;
NCR5380_dprint(NDEBUG_ARBITRATION, instance); dsprintk(NDEBUG_ARBITRATION, instance, "starting arbitration, id = %d\n", @@ -1157,7 +1159,7 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
dsprintk(NDEBUG_SELECTION, instance, "target %d selected, going into MESSAGE OUT phase.\n", scmd_id(cmd)); - tmp[0] = IDENTIFY(((instance->irq == NO_IRQ) ? 0 : 1), cmd->device->lun); + tmp[0] = IDENTIFY(can_disconnect, cmd->device->lun);
len = 1; data = tmp;