Re: [PATCH v3 04/24] dmaengine: qcom_hidma: Remove call to memset after dmam_alloc_coherent
From: Sinan Kaya <Okaya@kernel.org>
Date: 2019-07-15 04:17:32
Also in:
dmaengine, linux-arm-msm, lkml
On 7/14/2019 11:17 PM, Fuqian Huang wrote:
In commit 518a2f1925c3
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.
Signed-off-by: Fuqian Huang <redacted>I don't see SWIO or ARM64 IOMMU drivers getting impacted by the mentioned change above (518a2f1925c3). arch/alpha/kernel/pci_iommu.c | 2 +- arch/arc/mm/dma.c | 2 +- arch/c6x/mm/dma-coherent.c | 5 ++++- arch/m68k/kernel/dma.c | 2 +- arch/microblaze/mm/consistent.c | 2 +- arch/openrisc/kernel/dma.c | 2 +- arch/parisc/kernel/pci-dma.c | 4 ++-- arch/s390/pci/pci_dma.c | 2 +- arch/sparc/kernel/ioport.c | 2 +- arch/sparc/mm/io-unit.c | 2 +- arch/sparc/mm/iommu.c | 2 +- arch/xtensa/kernel/pci-dma.c | 2 +- drivers/misc/mic/host/mic_boot.c | 2 +- kernel/dma/virt.c | 2 +- 14 files changed, 18 insertions(+), 15 deletions(-) How does this new behavior apply globally? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel