dmaengine: move last completed cookie into generic dma_chan structure
Every DMA engine implementation declares a last completed dma cookie
in their private dma channel structures. This is pointless, and
forces driver specific code. Move this out into the common dma_chan
structure.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
[imx-sdma.c & mxs-dma.c]
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index b06cd4c..3696e6e 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -111,7 +111,6 @@
struct mxs_dma_ccw *ccw;
dma_addr_t ccw_phys;
int desc_count;
- dma_cookie_t last_completed;
enum dma_status status;
unsigned int flags;
#define MXS_DMA_SG_LOOP (1 << 0)
@@ -274,7 +273,7 @@
stat1 &= ~(1 << channel);
if (mxs_chan->status == DMA_SUCCESS)
- mxs_chan->last_completed = mxs_chan->desc.cookie;
+ mxs_chan->chan.completed_cookie = mxs_chan->desc.cookie;
/* schedule tasklet on this channel */
tasklet_schedule(&mxs_chan->tasklet);
@@ -538,7 +537,7 @@
dma_cookie_t last_used;
last_used = chan->cookie;
- dma_set_tx_state(txstate, mxs_chan->last_completed, last_used, 0);
+ dma_set_tx_state(txstate, chan->completed_cookie, last_used, 0);
return mxs_chan->status;
}