From: Bart Van Assche Date: Thu, 11 Feb 2016 19:05:01 +0000 (-0800) Subject: IB/srpt: Introduce target_reverse_dma_direction() X-Git-Tag: v4.6-rc1~102^2~2^3~15 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=671ec1b2d3dc2c800fd3814fd41f4f96499c92ee;p=platform%2Fkernel%2Flinux-exynos.git IB/srpt: Introduce target_reverse_dma_direction() Use the function target_reverse_dma_direction() instead of reimplementing it. Signed-off-by: Bart Van Assche Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Cc: Alex Estrin Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 6d1a137..5da59f4 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -96,19 +96,6 @@ static int srpt_queue_status(struct se_cmd *cmd); static void srpt_recv_done(struct ib_cq *cq, struct ib_wc *wc); static void srpt_send_done(struct ib_cq *cq, struct ib_wc *wc); -/** - * opposite_dma_dir() - Swap DMA_TO_DEVICE and DMA_FROM_DEVICE. - */ -static inline -enum dma_data_direction opposite_dma_dir(enum dma_data_direction dir) -{ - switch (dir) { - case DMA_TO_DEVICE: return DMA_FROM_DEVICE; - case DMA_FROM_DEVICE: return DMA_TO_DEVICE; - default: return dir; - } -} - static enum rdma_ch_state srpt_set_ch_state(struct srpt_rdma_ch *ch, enum rdma_ch_state new_state) { @@ -1049,7 +1036,7 @@ static void srpt_unmap_sg_to_ib_sge(struct srpt_rdma_ch *ch, dir = ioctx->cmd.data_direction; BUG_ON(dir == DMA_NONE); ib_dma_unmap_sg(ch->sport->sdev->device, sg, ioctx->sg_cnt, - opposite_dma_dir(dir)); + target_reverse_dma_direction(&ioctx->cmd)); ioctx->mapped_sg_count = 0; } } @@ -1086,7 +1073,7 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch, ioctx->sg_cnt = sg_cnt = cmd->t_data_nents; count = ib_dma_map_sg(ch->sport->sdev->device, sg, sg_cnt, - opposite_dma_dir(dir)); + target_reverse_dma_direction(cmd)); if (unlikely(!count)) return -EAGAIN;