From e5306c3ab28696fc112025c03c20546a6ff0040f Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 7 Jun 2016 14:37:19 +0100 Subject: [PATCH] mmc: dw_mmc: fix 32bit little-endian access of des1 field The IDMAC_SET_BUFFER1_SIZE() macro modifies des1, but does not check if the value being passed is big or little endian desptire the des1 field being marked as __le32. Fix the issue by ensuring the values are changed from the cpu endian to the descriptor endian by using cpu_to_le32. Spotted whilst doing big endian conversion work on Exynos, and stops the mmc worker thread from stalling. Signed-off-by: Ben Dooks Reviewed-by: Shawn Lin Tested-by: Shawn Lin Signed-off-by: Jaehoon Chung Signed-off-by: Ulf Hansson --- drivers/mmc/host/dw_mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 5a0e2ca56fd6..b7c7a76b80d5 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -92,7 +92,7 @@ struct idmac_desc { __le32 des1; /* Buffer sizes */ #define IDMAC_SET_BUFFER1_SIZE(d, s) \ - ((d)->des1 = ((d)->des1 & 0x03ffe000) | ((s) & 0x1fff)) + ((d)->des1 = ((d)->des1 & cpu_to_le32(0x03ffe000)) | (cpu_to_le32((s) & 0x1fff))) __le32 des2; /* buffer 1 physical address */ -- 2.20.1