This is a note to let you know that I've just added the patch titled
dmaengine: mv_xor_v2: enable XOR engine after its configuration
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dmaengine-mv_xor_v2-enable-xor-engine-after-its-configuration.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ab2c5f0a77fe49bdb6e307b397496373cb47d2c2 Mon Sep 17 00:00:00 2001
From: Hanna Hawa <hannah@xxxxxxxxxxx>
Date: Fri, 5 May 2017 11:57:47 +0200
Subject: dmaengine: mv_xor_v2: enable XOR engine after its configuration
From: Hanna Hawa <hannah@xxxxxxxxxxx>
commit ab2c5f0a77fe49bdb6e307b397496373cb47d2c2 upstream.
The engine was enabled prior to its configuration, which isn't
correct. This patch relocates the activation of the XOR engine, to be
after the configuration of the XOR engine.
Fixes: 19a340b1a820 ("dmaengine: mv_xor_v2: new driver")
Signed-off-by: Hanna Hawa <hannah@xxxxxxxxxxx>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/dma/mv_xor_v2.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/dma/mv_xor_v2.c
+++ b/drivers/dma/mv_xor_v2.c
@@ -653,9 +653,6 @@ static int mv_xor_v2_descq_init(struct m
writel((xor_dev->hw_desq & 0xFFFF00000000) >> 32,
xor_dev->dma_base + MV_XOR_V2_DMA_DESQ_BAHR_OFF);
- /* enable the DMA engine */
- writel(0, xor_dev->dma_base + MV_XOR_V2_DMA_DESQ_STOP_OFF);
-
/*
* This is a temporary solution, until we activate the
* SMMU. Set the attributes for reading & writing data buffers
@@ -699,6 +696,9 @@ static int mv_xor_v2_descq_init(struct m
reg |= MV_XOR_V2_GLOB_PAUSE_AXI_TIME_DIS_VAL;
writel(reg, xor_dev->glob_base + MV_XOR_V2_GLOB_PAUSE);
+ /* enable the DMA engine */
+ writel(0, xor_dev->dma_base + MV_XOR_V2_DMA_DESQ_STOP_OFF);
+
return 0;
}
Patches currently in stable-queue which might be from hannah@xxxxxxxxxxx are
queue-4.9/dmaengine-mv_xor_v2-enable-xor-engine-after-its-configuration.patch