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In commit af7ddd8a627c ("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"), dma_alloc_coherent has already zeroed the memory. So memset after these 2 functions is not needed. Signed-off-by: Fuqian Huang --- drivers/media/pci/ngene/ngene-core.c | 4 ---- drivers/media/platform/exynos4-is/fimc-is.c | 1 - 2 files changed, 5 deletions(-) diff --git a/drivers/media/pci/ngene/ngene-core.c b/drivers/media/pci/ngene/ngene-core.c index b75ab7d29226..af15ca1c501b 100644 --- a/drivers/media/pci/ngene/ngene-core.c +++ b/drivers/media/pci/ngene/ngene-core.c @@ -854,8 +854,6 @@ static int create_ring_buffer(struct pci_dev *pci_dev, if (!Head) return -ENOMEM; - memset(Head, 0, MemSize); - PARingBufferCur = PARingBufferHead; Cur = Head; @@ -907,8 +905,6 @@ static int AllocateRingBuffers(struct pci_dev *pci_dev, if (SCListMem == NULL) return -ENOMEM; - memset(SCListMem, 0, SCListMemSize); - pRingBuffer->SCListMem = SCListMem; pRingBuffer->PASCListMem = PASCListMem; pRingBuffer->SCListMemSize = SCListMemSize; diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c index e043d55133a3..77633e356305 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.c +++ b/drivers/media/platform/exynos4-is/fimc-is.c @@ -341,7 +341,6 @@ static int fimc_is_alloc_cpu_memory(struct fimc_is *is) return -ENOMEM; is->memory.size = FIMC_IS_CPU_MEM_SIZE; - memset(is->memory.vaddr, 0, is->memory.size); dev_info(dev, "FIMC-IS CPU memory base: %#x\n", (u32)is->memory.paddr);