diff options
| author | Russell King - ARM Linux <linux@arm.linux.org.uk> | 2012-03-07 02:35:27 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@linux.intel.com> | 2012-03-13 10:07:14 +0400 |
| commit | 96a2af41c78b1fbb1f567a3486bdc63f7b31c5fd (patch) | |
| tree | d977c6b2ff1a23dfd523e70315ebe976a3f3f079 /drivers/dma/intel_mid_dma.c | |
| parent | f7fbce07c6ce26a25b4e0cb5f241c361fde87901 (diff) | |
| download | linux-96a2af41c78b1fbb1f567a3486bdc63f7b31c5fd.tar.xz | |
dmaengine: consolidate tx_status functions
Now that we have the completed cookie in the dma_chan structure, we
can consolidate the tx_status functions by providing a function to set
the txstate structure and returning the DMA status. We also provide
a separate helper to set the residue for cookies which are still in
progress.
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>
Diffstat (limited to 'drivers/dma/intel_mid_dma.c')
| -rw-r--r-- | drivers/dma/intel_mid_dma.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c index cee79f6e035d..c9ab4ac18e41 100644 --- a/drivers/dma/intel_mid_dma.c +++ b/drivers/dma/intel_mid_dma.c @@ -477,30 +477,17 @@ static enum dma_status intel_mid_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie, struct dma_tx_state *txstate) { - dma_cookie_t last_used; - dma_cookie_t last_complete; - int ret; + enum dma_status ret; - last_complete = chan->completed_cookie; - last_used = chan->cookie; - - ret = dma_async_is_complete(cookie, last_complete, last_used); + ret = dma_cookie_status(chan, cookie, txstate); if (ret != DMA_SUCCESS) { spin_lock_bh(&midc->lock); midc_scan_descriptors(to_middma_device(chan->device), midc); spin_unlock_bh(&midc->lock); - last_complete = chan->completed_cookie; - last_used = chan->cookie; - - ret = dma_async_is_complete(cookie, last_complete, last_used); + ret = dma_cookie_status(chan, cookie, txstate); } - if (txstate) { - txstate->last = last_complete; - txstate->used = last_used; - txstate->residue = 0; - } return ret; } |