diff mbox series

[111/178] kernel/dma: remove unnecessary unmap_kernel_range

Message ID 20210430055855.0q2vqIi8N%akpm@linux-foundation.org (mailing list archive)
State New, archived
Headers show
Series [001/178] arch/ia64/kernel/head.S: remove duplicate include | expand

Commit Message

Andrew Morton April 30, 2021, 5:58 a.m. UTC 
From: Nicholas Piggin <npiggin@gmail.com>
Subject: kernel/dma: remove unnecessary unmap_kernel_range

vunmap will remove ptes.

Link: https://lkml.kernel.org/r/20210322021806.892164-3-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Cédric Le Goater <clg@kaod.org>
Cc: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/dma/remap.c |    1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

--- 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);
 }