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authorChing Huang <ching2048@areca.com.tw>2016-10-19 17:50:26 +0800
committerSasha Levin <alexander.levin@verizon.com>2016-11-23 23:05:37 -0500
commit98d446ef289ddce78684965745d34a28b05cfb34 (patch)
tree36f8abcbe6c4110ccd759f493636154b95665cb7
parent103432f0b54a920c211f9d6c013f9ef7e0366d20 (diff)
downloadlinux-linaro-stable-98d446ef289ddce78684965745d34a28b05cfb34.tar.gz
scsi: arcmsr: Send SYNCHRONIZE_CACHE command to firmware
[ Upstream commit 2bf7dc8443e113844d078fd6541b7f4aa544f92f ] The arcmsr driver failed to pass SYNCHRONIZE CACHE to controller firmware. Depending on how drive caches are handled internally by controller firmware this could potentially lead to data integrity problems. Ensure that cache flushes are passed to the controller. [mkp: applied by hand and removed unused vars] Cc: <stable@vger.kernel.org> Signed-off-by: Ching Huang <ching2048@areca.com.tw> Reported-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
-rw-r--r--drivers/scsi/arcmsr/arcmsr_hba.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index 0b44fb5ee485..7bded8e3f116 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -2545,18 +2545,9 @@ static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
struct CommandControlBlock *ccb;
int target = cmd->device->id;
- int lun = cmd->device->lun;
- uint8_t scsicmd = cmd->cmnd[0];
cmd->scsi_done = done;
cmd->host_scribble = NULL;
cmd->result = 0;
- if ((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)){
- if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
- cmd->result = (DID_NO_CONNECT << 16);
- }
- cmd->scsi_done(cmd);
- return 0;
- }
if (target == 16) {
/* virtual device for iop message transfer */
arcmsr_handle_virtual_command(acb, cmd);