From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Vinod Koul <vinod.koul@intel.com>,
linux-kernel@vger.kernel.org,
Viresh Kumar <viresh.kumar@linaro.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Linus Walleij <linus.walleij@linaro.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/6] dma: coh901318_lli: set residue only if dma is in progress
Date: Tue, 12 Feb 2013 12:58:37 +0200 [thread overview]
Message-ID: <1360666720-19006-5-git-send-email-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <1360666720-19006-1-git-send-email-andriy.shevchenko@linux.intel.com>
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
next prev parent reply other threads:[~2013-02-12 10:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-12 10:58 [PATCH 0/6] dma: various fixes in different DMAC drivers Andy Shevchenko
2013-02-12 10:58 ` [PATCH 1/6] of: dma: protect list write operation by spin_lock Andy Shevchenko
2013-02-12 10:58 ` [PATCH 2/6] dmaengine.h: remove redundant else keyword Andy Shevchenko
2013-02-12 15:01 ` Viresh Kumar
2013-02-12 10:58 ` [PATCH 3/6] dma: coh901318_lli: avoid unbalanced locking Andy Shevchenko
2013-02-12 15:57 ` Viresh Kumar
2013-02-15 14:52 ` Linus Walleij
2013-02-15 14:56 ` Andy Shevchenko
2013-02-15 20:52 ` Linus Walleij
2013-02-12 10:58 ` Andy Shevchenko [this message]
2013-02-15 14:53 ` [PATCH 4/6] dma: coh901318_lli: set residue only if dma is in progress Linus Walleij
2013-02-12 10:58 ` [PATCH 5/6] edma: do not waste memory for dma_mask Andy Shevchenko
2013-02-12 10:58 ` [PATCH 6/6] dma: tegra20-apb-dma: remove unnecessary assignment Andy Shevchenko
2013-02-13 12:40 ` Laxman Dewangan
2013-02-12 16:02 ` [PATCH 0/6] dma: various fixes in different DMAC drivers Viresh Kumar
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