From: Stefan Roese <sr@denx.de>
Date: Fri, 23 Jun 2017 09:05:49 +0000 (+0200)
Subject: dmaengine: zynqmp_dma: Remove max len check in zynqmp_dma_prep_memcpy
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=82474dade7f4c60206609e7274591d159db105bf;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

dmaengine: zynqmp_dma: Remove max len check in zynqmp_dma_prep_memcpy

Remove check for "len > ZYNQMP_DMA_MAX_TRANS_LEN" as its not needed.
If the length is larger, the transfer is split up into multiple parts
with the max descriptor length already.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Kedareswara rao Appana <appanad@xilinx.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
index 6d221e5c72ee..47f64192d2fd 100644
--- a/drivers/dma/xilinx/zynqmp_dma.c
+++ b/drivers/dma/xilinx/zynqmp_dma.c
@@ -794,9 +794,6 @@ static struct dma_async_tx_descriptor *zynqmp_dma_prep_memcpy(
 
 	chan = to_chan(dchan);
 
-	if (len > ZYNQMP_DMA_MAX_TRANS_LEN)
-		return NULL;
-
 	desc_cnt = DIV_ROUND_UP(len, ZYNQMP_DMA_MAX_TRANS_LEN);
 
 	spin_lock_bh(&chan->lock);