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authorJames Bottomley <James.Bottomley@steeleye.com>2005-12-09 17:45:22 -0500
committerJames Bottomley <jejb@mulgrave.(none)>2005-12-13 21:29:27 -0800
commitc9526497cf03ee775c3a6f8ba62335735f98de7a (patch)
tree46619a6e57ca84b51fed852722114c2fd25a9289 /drivers/scsi/scsi_lib.c
parent322e079f1b606e46b79bb8b8e6cf6110b5f2aa3f (diff)
[SCSI] Consolidate REQ_BLOCK_PC handling path (fix ipod panic)
This follows on from Jens' patch and consolidates all of the ULD separate handlers for REQ_BLOCK_PC into a single call which has his fix for our direction bug. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
-rw-r--r--drivers/scsi/scsi_lib.c33
1 files changed, 21 insertions, 12 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 097888721ec..9be5769d44a 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1078,6 +1078,26 @@ static void scsi_generic_done(struct scsi_cmnd *cmd)
scsi_io_completion(cmd, cmd->result == 0 ? cmd->bufflen : 0, 0);
}
+void scsi_setup_blk_pc_cmnd(struct scsi_cmnd *cmd, int retries)
+{
+ struct request *req = cmd->request;
+
+ BUG_ON(sizeof(req->cmd) > sizeof(cmd->cmnd));
+ memcpy(cmd->cmnd, req->cmd, sizeof(cmd->cmnd));
+ cmd->cmd_len = req->cmd_len;
+ if (!req->data_len)
+ cmd->sc_data_direction = DMA_NONE;
+ else if (rq_data_dir(req) == WRITE)
+ cmd->sc_data_direction = DMA_TO_DEVICE;
+ else
+ cmd->sc_data_direction = DMA_FROM_DEVICE;
+
+ cmd->transfersize = req->data_len;
+ cmd->allowed = retries;
+ cmd->timeout_per_command = req->timeout;
+}
+EXPORT_SYMBOL_GPL(scsi_setup_blk_pc_cmnd);
+
static int scsi_prep_fn(struct request_queue *q, struct request *req)
{
struct scsi_device *sdev = q->queuedata;
@@ -1213,18 +1233,7 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
goto kill;
}
} else {
- memcpy(cmd->cmnd, req->cmd, sizeof(cmd->cmnd));
- cmd->cmd_len = req->cmd_len;
- if (!req->data_len)
- cmd->sc_data_direction = DMA_NONE;
- else if (rq_data_dir(req) == WRITE)
- cmd->sc_data_direction = DMA_TO_DEVICE;
- else
- cmd->sc_data_direction = DMA_FROM_DEVICE;
-
- cmd->transfersize = req->data_len;
- cmd->allowed = 3;
- cmd->timeout_per_command = req->timeout;
+ scsi_setup_blk_pc_cmnd(cmd, 3);
cmd->done = scsi_generic_done;
}
}