diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-11-09 14:48:54 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-11-09 16:39:21 +0100 |
| commit | b5fa0e9ec997031083a76972d2ee0e8db671420a (patch) | |
| tree | c402f4b5e212fbc11fd75fe72757fb51972fecb2 /drivers/block/mtip32xx | |
| parent | sx8: use a per-host tag_set (diff) | |
| download | linux-b5fa0e9ec997031083a76972d2ee0e8db671420a.tar.xz linux-b5fa0e9ec997031083a76972d2ee0e8db671420a.zip | |
mtip32xx: move the blk_rq_map_sg call to mtip_hw_submit_io
We have all arguments at hand in mtip_hw_submit_io, so keep the
rq to sg mapping close to the dma_map_sg call.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/mtip32xx')
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 947aa10107a6..1964af8a187b 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -2171,7 +2171,6 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd, * @dd Pointer to the driver data structure. * @start First sector to read. * @nsect Number of sectors to read. - * @nents Number of entries in scatter list for the read command. * @tag The tag of this read command. * @callback Pointer to the function that should be called * when the read completes. @@ -2183,7 +2182,7 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd, * None */ static void mtip_hw_submit_io(struct driver_data *dd, struct request *rq, - struct mtip_cmd *command, int nents, + struct mtip_cmd *command, struct blk_mq_hw_ctx *hctx) { struct host_to_dev_fis *fis; @@ -2191,8 +2190,10 @@ static void mtip_hw_submit_io(struct driver_data *dd, struct request *rq, int dma_dir = rq_data_dir(rq) == READ ? DMA_FROM_DEVICE : DMA_TO_DEVICE; u64 start = blk_rq_pos(rq); unsigned int nsect = blk_rq_sectors(rq); + unsigned int nents; /* Map the scatter list for DMA access */ + nents = blk_rq_map_sg(hctx->queue, rq, command->sg); nents = dma_map_sg(&dd->pdev->dev, command->sg, nents, dma_dir); prefetch(&port->flags); @@ -3548,7 +3549,6 @@ static int mtip_submit_request(struct blk_mq_hw_ctx *hctx, struct request *rq) { struct driver_data *dd = hctx->queue->queuedata; struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq); - unsigned int nents; if (is_se_active(dd)) return -ENODATA; @@ -3579,11 +3579,8 @@ static int mtip_submit_request(struct blk_mq_hw_ctx *hctx, struct request *rq) return 0; } - /* Create the scatter list for this request. */ - nents = blk_rq_map_sg(hctx->queue, rq, cmd->sg); - /* Issue the read/write. */ - mtip_hw_submit_io(dd, rq, cmd, nents, hctx); + mtip_hw_submit_io(dd, rq, cmd, hctx); return 0; } |