dmaengine: pl330: fix return status on pending transfers
The pl330_tx_status() function returns the desc->status if the
dma_cookie_status() call does indicate the cookie completed,
however the desc->status is not look directly compatible. Sparse
throws the following warning:
pl330.c:2262:35: warning: mixing different enum types
pl330.c:2262:35: int enum desc_status versus
pl330.c:2262:35: int enum dma_status
Attempt to fix this by adding a switch statement to turn the
desc->status into a dma_status.
Note, this has only been tested with the dmatest suite.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
--
Vinod Koul <vinod.koul@intel.com>
Dan Williams <dan.j.williams@intel.com>
DMA List <dmaengine@vger.kernel.org>
Maxime Ripard <maxime.ripard@free-electrons.com>
Jassi Brar <jassisinghbrar@gmail.com>
Liviu Dudau <Liviu.Dudau@arm.com>
Linux ARM Kernel <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index d6f677e..a7d9d30 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2259,7 +2259,17 @@
transferred = 0;
residual += desc->bytes_requested - transferred;
if (desc->txd.cookie == cookie) {
- ret = desc->status;
+ switch (desc->status) {
+ case DONE:
+ ret = DMA_COMPLETE;
+ break;
+ case PREP:
+ case BUSY:
+ ret = DMA_IN_PROGRESS;
+ break;
+ default:
+ WARN_ON(1);
+ }
break;
}
if (desc->last)