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staging: hv: storvsc: ignore SET_WINDOW scsi command 

Some commands sent by smartd will offline the device.
With this change applied, smartd sill not monitor the device anymore.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Olaf Hering 2011-10-10 09:37:39 +02:00 committed by Greg Kroah-Hartman
parent e2bb653783
commit 92ae4ebdaa
1 changed files with 20 additions and 0 deletions
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20
drivers/staging/hv/storvsc_drv.c
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@ -1122,6 +1122,22 @@ static void storvsc_command_completion(struct hv_storvsc_request *request)
kmem_cache_free(host_dev->request_pool, cmd_request);
}
static bool storvsc_check_scsi_cmd(struct scsi_cmnd *scmnd)
{
bool allowed = true;
u8 scsi_op = scmnd->cmnd[0];
switch (scsi_op) {
/* smartd sends this command, which will offline the device */
case SET_WINDOW:
scmnd->result = DID_ERROR << 16;
allowed = false;
break;
default:
break;
}
return allowed;
}
/*
* storvsc_queuecommand - Initiate command processing
@ -1141,6 +1157,10 @@ static int storvsc_queuecommand_lck(struct scsi_cmnd *scmnd,
unsigned int sg_count = 0;
struct vmscsi_request *vm_srb;
if (storvsc_check_scsi_cmd(scmnd) == false) {
done(scmnd);
return 0;
}
/* If retrying, no need to prep the cmd */
if (scmnd->host_scribble) {