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authorDan Williams <dan.j.williams@intel.com>2015-12-15 12:54:06 -0800
committerDan Williams <dan.j.williams@intel.com>2015-12-15 12:54:06 -0800
commit3e6110fd5480f5f86ff31381f4dea14218284bff (patch)
tree03d9317932cede8ff2fe902b254244900813f372 /arch/microblaze
parentd91e892825ae6f0ed4f8b07ae5d348eff86ab2ea (diff)
downloadlinux-sh-3e6110fd5480f5f86ff31381f4dea14218284bff.tar.gz
Revert "scatterlist: use sg_phys()"
commit db0fa0cb0157 "scatterlist: use sg_phys()" did replacements of the form: phys_addr_t phys = page_to_phys(sg_page(s)); phys_addr_t phys = sg_phys(s) & PAGE_MASK; However, this breaks platforms where sizeof(phys_addr_t) > sizeof(unsigned long). Revert for 4.3 and 4.4 to make room for a combined helper in 4.5. Cc: <stable@vger.kernel.org> Cc: Jens Axboe <axboe@fb.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Fixes: db0fa0cb0157 ("scatterlist: use sg_phys()") Suggested-by: Joerg Roedel <joro@8bytes.org> Reported-by: Vitaly Lavrov <vel21ripn@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'arch/microblaze')
-rw-r--r--arch/microblaze/kernel/dma.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c
index c89da6312954..bf4dec229437 100644
--- a/arch/microblaze/kernel/dma.c
+++ b/arch/microblaze/kernel/dma.c
@@ -61,7 +61,8 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
/* FIXME this part of code is untested */
for_each_sg(sgl, sg, nents, i) {
sg->dma_address = sg_phys(sg);
- __dma_sync(sg_phys(sg), sg->length, direction);
+ __dma_sync(page_to_phys(sg_page(sg)) + sg->offset,
+ sg->length, direction);
}
return nents;