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/txx9dmac.c b/drivers/dma/txx9dmac.c
index 6122c36..a917b67 100644
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -424,7 +424,7 @@
dev_vdbg(chan2dev(&dc->chan), "descriptor %u %p complete\n",
txd->cookie, desc);
- dc->completed = txd->cookie;
+ dc->chan.completed_cookie = txd->cookie;
callback = txd->callback;
param = txd->callback_param;
@@ -976,7 +976,7 @@
dma_cookie_t last_complete;
int ret;
- last_complete = dc->completed;
+ last_complete = chan->completed_cookie;
last_used = chan->cookie;
ret = dma_async_is_complete(cookie, last_complete, last_used);
@@ -985,7 +985,7 @@
txx9dmac_scan_descriptors(dc);
spin_unlock_bh(&dc->lock);
- last_complete = dc->completed;
+ last_complete = chan->completed_cookie;
last_used = chan->cookie;
ret = dma_async_is_complete(cookie, last_complete, last_used);
@@ -1057,7 +1057,7 @@
return -EIO;
}
- dc->completed = chan->cookie = 1;
+ chan->completed_cookie = chan->cookie = 1;
dc->ccr = TXX9_DMA_CCR_IMMCHN | TXX9_DMA_CCR_INTENE | CCR_LE;
txx9dmac_chan_set_SMPCHN(dc);
@@ -1186,7 +1186,7 @@
dc->ddev->chan[ch] = dc;
dc->chan.device = &dc->dma;
list_add_tail(&dc->chan.device_node, &dc->chan.device->channels);
- dc->chan.cookie = dc->completed = 1;
+ dc->chan.cookie = dc->chan.completed_cookie = 1;
if (is_dmac64(dc))
dc->ch_regs = &__txx9dmac_regs(dc->ddev)->CHAN[ch];