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authorChing Huang <ching2048@areca.com.tw>2016-10-19 17:50:26 +0800
committerSasha Levin <alexander.levin@verizon.com>2016-11-25 22:57:03 -0500
commit97d53c4d89e0f2833b932b8e3f0c2d7312a55b52 (patch)
treef38202661b846de943ccf5107b8c4b000d0eb832
parentd207c6603fc6be402f6e75181c9dae0bfd585e56 (diff)
downloadlinux-linaro-stable-97d53c4d89e0f2833b932b8e3f0c2d7312a55b52.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 914c39f9f388..2926295a936d 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -2540,18 +2540,9 @@ 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);