video: fbdev-MMP: Remove call to memset after dma_alloc_coherent

In commit 518a2f1925c3
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.

Signed-off-by: Fuqian Huang <redacted>
---
Changes in v3:
  - Use actual commit rather than the merge commit in the commit message

 drivers/video/fbdev/mmp/fb/mmpfb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/video/fbdev/mmp/fb/mmpfb.c b/drivers/video/fbdev/mmp/fb/mmpfb.c
index e5b56f2199df..47bc7c59bbd8 100644
--- a/drivers/video/fbdev/mmp/fb/mmpfb.c
+++ b/drivers/video/fbdev/mmp/fb/mmpfb.c

@@ -612,7 +612,6 @@ static int mmpfb_probe(struct platform_device *pdev)
 		ret = -ENOMEM;
 		goto failed_destroy_mutex;
 	}
-	memset(fbi->fb_start, 0, fbi->fb_size);
 	dev_info(fbi->dev, "fb %dk allocated\n", fbi->fb_size/1024);
 
 	/* fb power on */

-- 
2.11.0

On 2019/07/15, Fuqian Huang wrote:

In commit 518a2f1925c3
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.

Signed-off-by: Fuqian Huang <redacted>
---
Changes in v3:
  - Use actual commit rather than the merge commit in the commit message

 drivers/video/fbdev/mmp/fb/mmpfb.c | 1 -
 1 file changed, 1 deletion(-)

Reviewed-by: Emil Velikov <redacted>

-Emil

On 7/15/19 12:40 PM, Emil Velikov wrote:

On 2019/07/15, Fuqian Huang wrote:

quoted

In commit 518a2f1925c3
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.

Signed-off-by: Fuqian Huang <redacted>
---
Changes in v3:
  - Use actual commit rather than the merge commit in the commit message

 drivers/video/fbdev/mmp/fb/mmpfb.c | 1 -
 1 file changed, 1 deletion(-)

Reviewed-by: Emil Velikov <redacted>

Patch queued for v5.4, thanks.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics