diff options
Diffstat (limited to 'drivers/scsi/scsi_error.c')
| -rw-r--r-- | drivers/scsi/scsi_error.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 0c2c73be197..a1689353d7f 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -641,9 +641,9 @@ EXPORT_SYMBOL(scsi_eh_prep_cmnd); /** * scsi_eh_restore_cmnd - Restore a scsi command info as part of error recory * @scmd: SCSI command structure to restore - * @ses: saved information from a coresponding call to scsi_prep_eh_cmnd + * @ses: saved information from a coresponding call to scsi_eh_prep_cmnd * - * Undo any damage done by above scsi_prep_eh_cmnd(). + * Undo any damage done by above scsi_eh_prep_cmnd(). */ void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, struct scsi_eh_save *ses) { @@ -1451,28 +1451,21 @@ static void eh_lock_door_done(struct request *req, int uptodate) * @sdev: SCSI device to prevent medium removal * * Locking: - * We must be called from process context; scsi_allocate_request() - * may sleep. + * We must be called from process context. * * Notes: * We queue up an asynchronous "ALLOW MEDIUM REMOVAL" request on the * head of the devices request queue, and continue. - * - * Bugs: - * scsi_allocate_request() may sleep waiting for existing requests to - * be processed. However, since we haven't kicked off any request - * processing for this host, this may deadlock. - * - * If scsi_allocate_request() fails for what ever reason, we - * completely forget to lock the door. */ static void scsi_eh_lock_door(struct scsi_device *sdev) { struct request *req; + /* + * blk_get_request with GFP_KERNEL (__GFP_WAIT) sleeps until a + * request becomes available + */ req = blk_get_request(sdev->request_queue, READ, GFP_KERNEL); - if (!req) - return; req->cmd[0] = ALLOW_MEDIUM_REMOVAL; req->cmd[1] = 0; |