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authorAlexandru Ardelean <alexandru.ardelean@analog.com>2019-03-26 16:05:20 +0200
committerVinod Koul <vkoul@kernel.org>2019-04-24 11:08:38 +0530
commit648865a79d8ee3d1aa64aab5eb2a9d12eeed14f9 (patch)
treee14223fdd23d34867944778dd829d4afdaaa5dbc /drivers/dma
parent56009f0d2f54e4ce4305d65ce589eee6c22ac25f (diff)
dmaengine: axi-dmac: Don't check the number of frames for alignment
In 2D transfers (for the AXI DMAC), the number of frames (numf) represents Y_LENGTH, and the length of a frame is X_LENGTH. 2D transfers are useful for video transfers where screen resolutions ( X * Y ) are typically aligned for X, but not for Y. There is no requirement for Y_LENGTH to be aligned to the bus-width (or anything), and this is also true for AXI DMAC. Checking the Y_LENGTH for alignment causes false errors when initiating DMA transfers. This change fixes this by checking only that the Y_LENGTH is non-zero. Fixes: 0e3b67b348b8 ("dmaengine: Add support for the Analog Devices AXI-DMAC DMA controller") Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dma-axi-dmac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c
index eecb367b4f3e..cdbef59a9542 100644
--- a/drivers/dma/dma-axi-dmac.c
+++ b/drivers/dma/dma-axi-dmac.c
@@ -526,7 +526,7 @@ static struct dma_async_tx_descriptor *axi_dmac_prep_interleaved(
if (chan->hw_2d) {
if (!axi_dmac_check_len(chan, xt->sgl[0].size) ||
- !axi_dmac_check_len(chan, xt->numf))
+ xt->numf == 0)
return NULL;
if (xt->sgl[0].size + dst_icg > chan->max_length ||
xt->sgl[0].size + src_icg > chan->max_length)