[4.9,049/119] dmaengine: mv_xor_v2: enable XOR engine after its configuration
diff mbox series

Message ID 20170612152600.030969516@linuxfoundation.org
State New, archived
Headers show
Series
  • 4.9.32-stable review
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Commit Message

Greg Kroah-Hartman June 12, 2017, 3:25 p.m. UTC
4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hanna Hawa <hannah@marvell.com>

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@marvell.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/dma/mv_xor_v2.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Patch
diff mbox series

--- 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;
 }