Messages in this thread Patch in this message | | | From | Andy Shevchenko <> | Subject | [PATCH 4/6] dma: coh901318_lli: set residue only if dma is in progress | Date | Tue, 12 Feb 2013 12:58:37 +0200 |
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When status is DMA_SUCCESS the residue should be zero. Otherwise it's a bug.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-arm-kernel@lists.infradead.org --- drivers/dma/coh901318.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index a2f079a..797940e 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -2355,7 +2355,9 @@ coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie, enum dma_status ret; ret = dma_cookie_status(chan, cookie, txstate); - /* FIXME: should be conditional on ret != DMA_SUCCESS? */ + if (ret == DMA_SUCCESS) + return ret; + dma_set_residue(txstate, coh901318_get_bytes_left(chan)); if (ret == DMA_IN_PROGRESS && cohc->stopped) -- 1.7.10.4
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