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SubjectRe: [PATCH -next] drm/nouveau: Remove set but not used variable 'dev'
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在 2021/5/25 16:25, Baokun Li 写道:
> Fixes gcc '-Wunused-but-set-variable' warning:
>
> drivers/gpu/drm/nouveau/nouveau_bo.c: In function 'nouveau_ttm_tt_populate':
> drivers/gpu/drm/nouveau/nouveau_bo.c:1258:17: warning:
> variable ‘dev’ set but not used [-Wunused-but-set-variable]
>
> drivers/gpu/drm/nouveau/nouveau_bo.c: In function 'nouveau_ttm_tt_unpopulate':
> drivers/gpu/drm/nouveau/nouveau_bo.c:1281:17: warning:
> variable ‘dev’ set but not used [-Wunused-but-set-variable]
>
> It never used since introduction.
>
> Signed-off-by: Baokun Li <libaokun1@huawei.com>
> ---
> drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
> index 7a2624c0ba4c..51f9a2e6532e 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_bo.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
> @@ -1254,7 +1254,6 @@ nouveau_ttm_tt_populate(struct ttm_device *bdev,
> {
> struct ttm_tt *ttm_dma = (void *)ttm;
> struct nouveau_drm *drm;
> - struct device *dev;
> bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
>
> if (ttm_tt_is_populated(ttm))
> @@ -1267,7 +1266,6 @@ nouveau_ttm_tt_populate(struct ttm_device *bdev,
> }
>
> drm = nouveau_bdev(bdev);
> - dev = drm->dev->dev;
>
> return ttm_pool_alloc(&drm->ttm.bdev.pool, ttm, ctx);
> }
> @@ -1277,14 +1275,12 @@ nouveau_ttm_tt_unpopulate(struct ttm_device *bdev,
> struct ttm_tt *ttm)
> {
> struct nouveau_drm *drm;
> - struct device *dev;
> bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
>
> if (slave)
> return;
>
> drm = nouveau_bdev(bdev);
> - dev = drm->dev->dev;
>
> return ttm_pool_free(&drm->ttm.bdev.pool, ttm);
> }

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