From 776b23a0363d99ca402edc1aba1db8099b747b33 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 6 Jan 2006 18:34:07 +0100 Subject: [SCSI] always handle REQ_BLOCK_PC requests in common code LLDDs should never see REQ_BLOCK_PC requests, we can handle them just fine in the core code. There is a small behaviour change in that some check in sr's rw_intr are bypassed, but I consider the old behaviour a bug. Mike found this cleanup opportunity and provdided early patches, so all the credit goes to him, even if I redid the patches from scratch beause that was easier than forward-porting the old patches. Signed-off-by: Christoph Hellwig Signed-off-by: James Bottomley --- drivers/scsi/scsi_lib.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/scsi/scsi_lib.c') diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 00c9bf383e23..3574ba935af8 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1212,7 +1212,7 @@ static int scsi_issue_flush_fn(request_queue_t *q, struct gendisk *disk, return -EOPNOTSUPP; } -static void scsi_generic_done(struct scsi_cmnd *cmd) +static void scsi_blk_pc_done(struct scsi_cmnd *cmd) { BUG_ON(!blk_pc_request(cmd->request)); /* @@ -1224,7 +1224,7 @@ static void scsi_generic_done(struct scsi_cmnd *cmd) scsi_io_completion(cmd, cmd->bufflen, 0); } -void scsi_setup_blk_pc_cmnd(struct scsi_cmnd *cmd) +static void scsi_setup_blk_pc_cmnd(struct scsi_cmnd *cmd) { struct request *req = cmd->request; @@ -1241,8 +1241,8 @@ void scsi_setup_blk_pc_cmnd(struct scsi_cmnd *cmd) cmd->transfersize = req->data_len; cmd->allowed = req->retries; cmd->timeout_per_command = req->timeout; + cmd->done = scsi_blk_pc_done; } -EXPORT_SYMBOL_GPL(scsi_setup_blk_pc_cmnd); static int scsi_prep_fn(struct request_queue *q, struct request *req) { @@ -1339,7 +1339,6 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req) * happening now. */ if (req->flags & (REQ_CMD | REQ_BLOCK_PC)) { - struct scsi_driver *drv; int ret; /* @@ -1371,16 +1370,17 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req) /* * Initialize the actual SCSI command for this request. */ - if (req->rq_disk) { + if (req->flags & REQ_BLOCK_PC) { + scsi_setup_blk_pc_cmnd(cmd); + } else if (req->rq_disk) { + struct scsi_driver *drv; + drv = *(struct scsi_driver **)req->rq_disk->private_data; if (unlikely(!drv->init_command(cmd))) { scsi_release_buffers(cmd); scsi_put_command(cmd); goto kill; } - } else { - scsi_setup_blk_pc_cmnd(cmd); - cmd->done = scsi_generic_done; } } -- cgit v1.2.3