From 75967b788c2898601620ce91ed14b4a9a371b6fe Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Mon, 16 Mar 2015 11:52:45 +0000 Subject: [PATCH] dmaengine: pl330: fix return status on pending transfers The pl330_tx_status() function returns the desc->status if the dma_cookie_status() call does indicate the cookie completed, however the desc->status is not look directly compatible. Sparse throws the following warning: pl330.c:2262:35: warning: mixing different enum types pl330.c:2262:35: int enum desc_status versus pl330.c:2262:35: int enum dma_status Attempt to fix this by adding a switch statement to turn the desc->status into a dma_status. Note, this has only been tested with the dmatest suite. Signed-off-by: Ben Dooks -- Vinod Koul Dan Williams DMA List Maxime Ripard Jassi Brar Liviu Dudau Linux ARM Kernel Signed-off-by: Vinod Koul --- drivers/dma/pl330.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index d6f677e066f7..a7d9d3029b14 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2259,7 +2259,17 @@ pl330_tx_status(struct dma_chan *chan, dma_cookie_t cookie, transferred = 0; residual += desc->bytes_requested - transferred; if (desc->txd.cookie == cookie) { - ret = desc->status; + switch (desc->status) { + case DONE: + ret = DMA_COMPLETE; + break; + case PREP: + case BUSY: + ret = DMA_IN_PROGRESS; + break; + default: + WARN_ON(1); + } break; } if (desc->last) -- 2.20.1