Re: [PATCH] drm/amdgpu: fix compiler warning(v2)

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Am 30.03.21 um 15:24 schrieb Guchun Chen:
warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY);

v2: put short variable declaration last

Signed-off-by: Guchun Chen <guchun.chen@xxxxxxx>

I still don't know why you get a compiler warning, but it certainly improves the coding style.

Reviewed-by: Christian König <christian.koenig@xxxxxxx>

---
  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 +---
  1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 722efd86718e..fbaa4c148cca 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -823,11 +823,10 @@ static int amdgpu_ttm_tt_pin_userptr(struct ttm_device *bdev,
  {
  	struct amdgpu_device *adev = amdgpu_ttm_adev(bdev);
  	struct amdgpu_ttm_tt *gtt = (void *)ttm;
-	int r;
-
  	int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY);
  	enum dma_data_direction direction = write ?
  		DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
+	int r;
/* Allocate an SG array and squash pages into it */
  	r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0,
@@ -861,7 +860,6 @@ static void amdgpu_ttm_tt_unpin_userptr(struct ttm_device *bdev,
  {
  	struct amdgpu_device *adev = amdgpu_ttm_adev(bdev);
  	struct amdgpu_ttm_tt *gtt = (void *)ttm;
-
  	int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY);
  	enum dma_data_direction direction = write ?
  		DMA_BIDIRECTIONAL : DMA_TO_DEVICE;

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