ARM: shmobile: kzm9g: Fix coherent DMA mask
authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Mon, 16 Dec 2013 18:16:08 +0000 (19:16 +0100)
committerSimon Horman <horms+renesas@verge.net.au>
Thu, 26 Dec 2013 05:20:57 +0000 (14:20 +0900)
Commit 4dcfa60071b3d23f0181f27d8519f12e37cefbb9 ("ARM: DMA-API: better
handing of DMA masks for coherent allocations") added an additional
check to the coherent DMA mask that results in an error when the mask is
larger than what dma_addr_t can address.

Set the LCDC coherent DMA mask to DMA_BIT_MASK(32) instead of ~0 to fix
the problem.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
arch/arm/mach-shmobile/board-kzm9g.c

index fe689b7fdc9e715ecd724edcc746913010627fb4..bc40b853ffd3cff2204bdfdc283863a9577f51bc 100644 (file)
@@ -334,7 +334,7 @@ static struct platform_device lcdc_device = {
        .resource       = lcdc_resources,
        .dev    = {
                .platform_data  = &lcdc_info,
-               .coherent_dma_mask = ~0,
+               .coherent_dma_mask = DMA_BIT_MASK(32),
        },
 };