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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2013-02-14 11:00:18 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-02-14 20:00:53 +0530 |
| commit | 9b562639a1dbef847dfc9daa807bd3e7e02ef24f (patch) | |
| tree | ea18c0b5399fbe544bda33047631ce848f3dd83c | |
| parent | 4168d0d9d304f184f786b1f00750557b8e09453c (diff) | |
| download | linux-stable-9b562639a1dbef847dfc9daa807bd3e7e02ef24f.tar.gz linux-stable-9b562639a1dbef847dfc9daa807bd3e7e02ef24f.tar.bz2 linux-stable-9b562639a1dbef847dfc9daa807bd3e7e02ef24f.zip | |
dma: coh901318: set residue only if dma is in progress
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>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | drivers/dma/coh901318.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index aa384e53b7ac..671e75962370 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -1147,7 +1147,9 @@ 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) |