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Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[firefly-linux-kernel-4.4.55.git]
/
include
/
linux
/
scatterlist.h
diff --git
a/include/linux/scatterlist.h
b/include/linux/scatterlist.h
index 5951e3f38878398d36eef96e0482ebae15bf8409..26806775b11b3932711bc796d1284171d92f58fb 100644
(file)
--- a/
include/linux/scatterlist.h
+++ b/
include/linux/scatterlist.h
@@
-111,6
+111,9
@@
static inline struct page *sg_page(struct scatterlist *sg)
static inline void sg_set_buf(struct scatterlist *sg, const void *buf,
unsigned int buflen)
{
+#ifdef CONFIG_DEBUG_SG
+ BUG_ON(!virt_addr_valid(buf));
+#endif
sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
}