From 0f78e3b58f5f99c991613db4477f893b53da5520 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= Date: Thu, 30 Jun 2016 17:15:16 +0200 Subject: dmaengine: rcar-dmac: warn if transfer cannot start as TE = 1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The documentation states one should make sure both DE and TE are cleared before starting a transaction. This patch extends the current warning to look at both DE and TE. Based on previous work from Muhammad Hamza Farooq. Suggested-by: Muhammad Hamza Farooq Signed-off-by: Niklas Söderlund Acked-by: Laurent Pinchart Signed-off-by: Vinod Koul --- drivers/dma/sh/rcar-dmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/dma/sh') diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 74c9563222bc..72e7dab52c48 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -311,7 +311,7 @@ static bool rcar_dmac_chan_is_busy(struct rcar_dmac_chan *chan) { u32 chcr = rcar_dmac_chan_read(chan, RCAR_DMACHCR); - return (chcr & (RCAR_DMACHCR_DE | RCAR_DMACHCR_TE)) == RCAR_DMACHCR_DE; + return !!(chcr & (RCAR_DMACHCR_DE | RCAR_DMACHCR_TE)); } static void rcar_dmac_chan_start_xfer(struct rcar_dmac_chan *chan) -- cgit v1.2.3