Dan Carpenter <dan.carpenter@xxxxxxxxxx> writes:
> 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>
Looks good to me.
Reviewed-by: Jeff Moyer <jmoyer@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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