Messages in this thread Patch in this message | | | From | Sui Jingfeng <> | Subject | [PATCH] drm/loongson: Fix two warnings because of passing wrong type | Date | Mon, 10 Jul 2023 18:09:31 +0800 |
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When accessing I/O memory, we should pass '__iomem *' type instead of 'void *' simply, otherwise sparse tests will complain. After applied this patch, the following two sparse warnings got fixed.
1) drivers/gpu/drm/loongson/lsdc_benchmark.c:27:35: sparse: expected void volatile [noderef] __iomem * sparse: got void *kptr
2) drivers/gpu/drm/loongson/lsdc_benchmark.c:42:51: sparse: expected void const volatile [noderef] __iomem * sparse: got void *kptr
Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202307100243.v3hv6aes-lkp@intel.com/ Signed-off-by: Sui Jingfeng <suijingfeng@loongson.cn> --- drivers/gpu/drm/loongson/lsdc_benchmark.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/loongson/lsdc_benchmark.c b/drivers/gpu/drm/loongson/lsdc_benchmark.c index b088646a2ff9..36e352820bdb 100644 --- a/drivers/gpu/drm/loongson/lsdc_benchmark.c +++ b/drivers/gpu/drm/loongson/lsdc_benchmark.c @@ -24,7 +24,7 @@ static void lsdc_copy_gtt_to_vram_cpu(struct lsdc_bo *src_bo, lsdc_bo_kmap(dst_bo); while (n--) - memcpy_toio(dst_bo->kptr, src_bo->kptr, size); + memcpy_toio((void __iomem *)dst_bo->kptr, src_bo->kptr, size); lsdc_bo_kunmap(src_bo); lsdc_bo_kunmap(dst_bo); @@ -39,7 +39,7 @@ static void lsdc_copy_vram_to_gtt_cpu(struct lsdc_bo *src_bo, lsdc_bo_kmap(dst_bo); while (n--) - memcpy_fromio(dst_bo->kptr, src_bo->kptr, size); + memcpy_fromio(dst_bo->kptr, (void __iomem *)src_bo->kptr, size); lsdc_bo_kunmap(src_bo); lsdc_bo_kunmap(dst_bo); -- 2.34.1
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