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SubjectRe: [PATCH v3 04/24] dmaengine: qcom_hidma: Remove call to memset after dmam_alloc_coherent
Date
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 <huangfq.daxian@gmail.com>

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?

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