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-rw-r--r--crypto/async_tx/async_xor.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/crypto/async_tx/async_xor.c b/crypto/async_tx/async_xor.c
index 154cc84..8ade0a0 100644
--- a/crypto/async_tx/async_xor.c
+++ b/crypto/async_tx/async_xor.c
@@ -230,9 +230,7 @@ EXPORT_SYMBOL_GPL(async_xor);
static int page_is_zero(struct page *p, unsigned int offset, size_t len)
{
- char *a = page_address(p) + offset;
- return ((*(u32 *) a) == 0 &&
- memcmp(a, a + 4, len - 4) == 0);
+ return !memchr_inv(page_address(p) + offset, 0, len);
}
static inline struct dma_chan *
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