dmaengine: axi-dmac: Don't check the number of frames for alignment

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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: 0e3b67b348 ("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>

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Alexandru Ardelean 2019-03-26 16:05:20 +02:00 • committed by Vinod Koul

parent 56009f0d2f

commit 648865a79d

1 changed files with 1 additions and 1 deletions

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drivers/dma/dma-axi-dmac.c

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