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dmaengine: pl330: fix return status on pending transfers

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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 <[email protected]>
--
Vinod Koul <[email protected]>
Dan Williams <[email protected]>
DMA List <[email protected]>
Maxime Ripard <[email protected]>
Jassi Brar <[email protected]>
Liviu Dudau <[email protected]>
Linux ARM Kernel <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
This commit is contained in:
Ben Dooks 2015-03-16 11:52:45 +00:00 • committed by Vinod Koul
commit 75967b788c
1 changed files with 11 additions and 1 deletions
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12
drivers/dma/pl330.c
View file

@ -2259,7 +2259,17 @@ pl330_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
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)