From 4f36178188e0b33ea594e3d4849f407e40f8149d Mon Sep 17 00:00:00 2001 From: Benoit Parrot Date: Fri, 18 Nov 2016 21:20:14 -0200 Subject: [PATCH] [media] media: ti-vpe: vpdma: Fix bus error when vpdma is writing a descriptor On DRA7 since l3_noc event are being reported it was found that when the write descriptor was being written it was consistently causing bus error events. The write address was improperly programmed. Signed-off-by: Benoit Parrot Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/ti-vpe/vpdma_priv.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/ti-vpe/vpdma_priv.h b/drivers/media/platform/ti-vpe/vpdma_priv.h index 65f0c06..aeade5e 100644 --- a/drivers/media/platform/ti-vpe/vpdma_priv.h +++ b/drivers/media/platform/ti-vpe/vpdma_priv.h @@ -212,6 +212,7 @@ struct vpdma_dtd { #define DTD_V_START_MASK 0xffff #define DTD_V_START_SHFT 0 +#define DTD_DESC_START_MASK 0xffffffe0 #define DTD_DESC_START_SHIFT 5 #define DTD_WRITE_DESC_MASK 0x01 #define DTD_WRITE_DESC_SHIFT 2 @@ -294,7 +295,7 @@ static inline u32 dtd_frame_width_height(int width, int height) static inline u32 dtd_desc_write_addr(unsigned int addr, bool write_desc, bool drop_data, bool use_desc) { - return (addr << DTD_DESC_START_SHIFT) | + return (addr & DTD_DESC_START_MASK) | (write_desc << DTD_WRITE_DESC_SHIFT) | (drop_data << DTD_DROP_DATA_SHIFT) | use_desc; @@ -399,7 +400,7 @@ static inline int dtd_get_frame_height(struct vpdma_dtd *dtd) static inline int dtd_get_desc_write_addr(struct vpdma_dtd *dtd) { - return dtd->desc_write_addr >> DTD_DESC_START_SHIFT; + return dtd->desc_write_addr & DTD_DESC_START_MASK; } static inline bool dtd_get_write_desc(struct vpdma_dtd *dtd) -- 2.7.4