From: Nicholas Piggin <npiggin@xxxxxxxxx> Subject: kernel/dma: remove unnecessary unmap_kernel_range vunmap will remove ptes. Link: https://lkml.kernel.org/r/20210322021806.892164-3-npiggin@xxxxxxxxx Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> Cc: Cédric Le Goater <clg@xxxxxxxx> Cc: Uladzislau Rezki <urezki@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/dma/remap.c | 1 - 1 file changed, 1 deletion(-) --- a/kernel/dma/remap.c~kernel-dma-remove-unnecessary-unmap_kernel_range +++ a/kernel/dma/remap.c @@ -66,6 +66,5 @@ void dma_common_free_remap(void *cpu_add return; } - unmap_kernel_range((unsigned long)cpu_addr, PAGE_ALIGN(size)); vunmap(cpu_addr); } _
