From mboxrd@z Thu Jan 1 00:00:00 1970 From: radhey.shyam.pandey@xilinx.com (Radhey Shyam Pandey) Date: Mon, 2 Apr 2018 16:09:03 +0530 Subject: [RFC 3/6] dmaengine: xilinx_dma: Increase AXI DMA transaction segment count In-Reply-To: <1522665546-10035-1-git-send-email-radheys@xilinx.com> References: <1522665546-10035-1-git-send-email-radheys@xilinx.com> Message-ID: <1522665546-10035-4-git-send-email-radheys@xilinx.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Increase AXI DMA transaction segments count to ensure that even in high load we always get a free segment in prepare descriptor for a DMA_SLAVE transaction. Signed-off-by: Radhey Shyam Pandey --- drivers/dma/xilinx/xilinx_dma.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 16fee30..36e1ab9 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -165,7 +165,7 @@ #define XILINX_DMA_BD_SOP BIT(27) #define XILINX_DMA_BD_EOP BIT(26) #define XILINX_DMA_COALESCE_MAX 255 -#define XILINX_DMA_NUM_DESCS 255 +#define XILINX_DMA_NUM_DESCS 512 #define XILINX_DMA_NUM_APP_WORDS 5 /* Multi-Channel DMA Descriptor offsets*/ -- 1.7.1