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Date: Fri, 18 Nov 2016 17:20:14 -0600 From: Benoit Parrot <bparrot@...com> To: <linux-media@...r.kernel.org>, Hans Verkuil <hverkuil@...all.nl> CC: <linux-kernel@...r.kernel.org>, Tomi Valkeinen <tomi.valkeinen@...com>, Jyri Sarha <jsarha@...com>, Peter Ujfalusi <peter.ujfalusi@...com>, Benoit Parrot <bparrot@...com> Subject: [Patch v2 04/35] 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 <bparrot@...com> Acked-by: Hans Verkuil <hans.verkuil@...co.com> --- 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 65f0c067bed1..aeade5edc8ac 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) -- 2.9.0
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