[PATCH 23/31] sh: handle page-less SG entries
From: Christoph Hellwig <hch@lst.de>
Date: 2015-08-12 07:09:56
Also in:
linux-alpha, linux-media, linux-mips, linux-s390, linuxppc-dev, lkml, sparclinux
Subsystem:
superh, the rest · Maintainers:
Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz, Linus Torvalds
Make all cache invalidation conditional on sg_has_page(). Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/sh/kernel/dma-nommu.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/sh/kernel/dma-nommu.c b/arch/sh/kernel/dma-nommu.c
index 5b0bfcd..3b64dc7 100644
--- a/arch/sh/kernel/dma-nommu.c
+++ b/arch/sh/kernel/dma-nommu.c@@ -33,9 +33,8 @@ static int nommu_map_sg(struct device *dev, struct scatterlist *sg, WARN_ON(nents == 0 || sg[0].length == 0); for_each_sg(sg, s, nents, i) { - BUG_ON(!sg_page(s));