I'm not positive, but it looks like it might be possible to reach the
end of this function and return an uninitialized value for "rc". Anyway
it causes a static checker warning and let's silence it.
The warning was introduced in commit b2e0d1625e19 ('dax: fix lifetime of
in-kernel dax mappings with dax_map_atomic()').
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/fs/dax.c b/fs/dax.c
index 90322eb..3744e14 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -155,7 +155,8 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
loff_t pos = start, max = start, bh_max = start;
bool hole = false, need_wmb = false;
struct block_device *bdev = NULL;
- int rw = iov_iter_rw(iter), rc;
+ int rc = 0;
+ int rw = iov_iter_rw(iter);
long map_len = 0;
struct blk_dax_ctl dax = {
.addr = (void __pmem *) ERR_PTR(-EIO),
--
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