3.11.10.4 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
commit b6328a6b7ba57fc84c38248f6f0e387e1170f1a8 upstream.
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@xxxxxxxxxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
arch/arm/mach-shmobile/board-mackerel.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 85f51a8..07ef12a 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -421,7 +421,7 @@ 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),
},
};
@@ -497,7 +497,7 @@ static struct platform_device hdmi_lcdc_device = {
.id = 1,
.dev = {
.platform_data = &hdmi_lcdc_info,
- .coherent_dma_mask = ~0,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
},
};
--
1.8.3.2
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