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scsi: arcmsr: Send SYNCHRONIZE_CACHE command to firmware

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commit 2bf7dc8443e113844d078fd6541b7f4aa544f92f upstream.

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]

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ching Huang 2016-10-19 17:50:26 +08:00 • committed by Greg Kroah-Hartman
parent 69ee0ed0c6
commit c77a234622
1 changed files with 0 additions and 9 deletions
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9
drivers/scsi/arcmsr/arcmsr_hba.c
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@ -2545,18 +2545,9 @@ static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd,
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
struct CommandControlBlock *ccb; struct CommandControlBlock *ccb;
int target = cmd->device->id; int target = cmd->device->id;
int lun = cmd->device->lun;
uint8_t scsicmd = cmd->cmnd[0];
cmd->scsi_done = done; cmd->scsi_done = done;
cmd->host_scribble = NULL; cmd->host_scribble = NULL;
cmd->result = 0; 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) { if (target == 16) {
/* virtual device for iop message transfer */ /* virtual device for iop message transfer */
arcmsr_handle_virtual_command(acb, cmd); arcmsr_handle_virtual_command(acb, cmd);