From 9b562639a1dbef847dfc9daa807bd3e7e02ef24f Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 14 Feb 2013 11:00:18 +0200 Subject: [PATCH] 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 Acked-by: Viresh Kumar Cc: Linus Walleij Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vinod Koul --- 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 aa384e53b7a..671e7596237 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) -- 2.41.0