diff mbox series

[06/22] fbdev: da8xx: Don't use GFP_DMA when calling dma_alloc_coherent()

Message ID 20220219005221.634-7-bhe@redhat.com (mailing list archive)
State Not Applicable
Headers show
Series Don't use kmalloc() with GFP_DMA | expand

Checks

Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 2 this patch: 2
netdev/cc_maintainers warning 4 maintainers not CCed: dri-devel@lists.freedesktop.org timur@kernel.org deller@gmx.de linux-fbdev@vger.kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 2 this patch: 2
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 24 lines checked
netdev/kdoc success Errors and warnings before: 5 this patch: 5
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Baoquan He Feb. 19, 2022, 12:52 a.m. UTC 
dma_alloc_coherent() allocates dma buffer with device's addressing
limitation in mind. It's redundent to specify GFP_DMA when calling
dma_alloc_coherent().

[ 42.hyeyoo@gmail.com: Update changelog ]

Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
---
 drivers/video/fbdev/da8xx-fb.c   | 4 ++--
 drivers/video/fbdev/fsl-diu-fb.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

Comments

Christoph Hellwig Feb. 19, 2022, 7:08 a.m. UTC | #1 
On Sat, Feb 19, 2022 at 08:52:05AM +0800, Baoquan He wrote:
> dma_alloc_coherent() allocates dma buffer with device's addressing
> limitation in mind. It's redundent to specify GFP_DMA when calling
> dma_alloc_coherent().

Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/drivers/video/fbdev/da8xx-fb.c b/drivers/video/fbdev/da8xx-fb.c
index 005ac3c17aa1..7cb7e63117c9 100644
--- a/drivers/video/fbdev/da8xx-fb.c
+++ b/drivers/video/fbdev/da8xx-fb.c
@@ -1426,7 +1426,7 @@  static int fb_probe(struct platform_device *device)
 	par->vram_virt = dmam_alloc_coherent(par->dev,
 					     par->vram_size,
 					     &par->vram_phys,
-					     GFP_KERNEL | GFP_DMA);
+					     GFP_KERNEL);
 	if (!par->vram_virt) {
 		dev_err(&device->dev,
 			"GLCD: kmalloc for frame buffer failed\n");
@@ -1446,7 +1446,7 @@  static int fb_probe(struct platform_device *device)
 	/* allocate palette buffer */
 	par->v_palette_base = dmam_alloc_coherent(par->dev, PALETTE_SIZE,
 						  &par->p_palette_base,
-						  GFP_KERNEL | GFP_DMA);
+						  GFP_KERNEL);
 	if (!par->v_palette_base) {
 		dev_err(&device->dev,
 			"GLCD: kmalloc for palette buffer failed\n");
diff --git a/drivers/video/fbdev/fsl-diu-fb.c b/drivers/video/fbdev/fsl-diu-fb.c
index e332017c6af6..a79fa162a5d1 100644
--- a/drivers/video/fbdev/fsl-diu-fb.c
+++ b/drivers/video/fbdev/fsl-diu-fb.c
@@ -1692,7 +1692,7 @@  static int fsl_diu_probe(struct platform_device *pdev)
 	int ret;
 
 	data = dmam_alloc_coherent(&pdev->dev, sizeof(struct fsl_diu_data),
-				   &dma_addr, GFP_DMA | __GFP_ZERO);
+				   &dma_addr, __GFP_ZERO);
 	if (!data)
 		return -ENOMEM;
 	data->dma_addr = dma_addr;