From: Yu Kuai <yukuai3@xxxxxxxxxx> commit 1243172d5894 ("nbd: use pr_err to output error message") tries to define pr_fmt and use short pr_err() to output error message, however, the definition is missed. This patch also remove existing "nbd:" inside pr_err(). Fixes: 1243172d5894 ("nbd: use pr_err to output error message") Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx> --- Changes in v2, suggested by Joe - move pr_fmt() to before any #include, so that #undef can be remove - remove existing "nbd:" drivers/block/nbd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index f5d098a148cb..2a709daefbc4 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -11,6 +11,8 @@ * (part of code stolen from loop.c) */ +#define pr_fmt(fmt) "nbd: " fmt + #include <linux/major.h> #include <linux/blkdev.h> @@ -1950,7 +1952,7 @@ static int nbd_genl_connect(struct sk_buff *skb, struct genl_info *info) test_bit(NBD_DISCONNECT_REQUESTED, &nbd->flags)) || !refcount_inc_not_zero(&nbd->refs)) { mutex_unlock(&nbd_index_mutex); - pr_err("nbd: device at index %d is going down\n", + pr_err("device at index %d is going down\n", index); return -EINVAL; } @@ -1961,7 +1963,7 @@ static int nbd_genl_connect(struct sk_buff *skb, struct genl_info *info) if (!nbd) { nbd = nbd_dev_add(index, 2); if (IS_ERR(nbd)) { - pr_err("nbd: failed to add new device\n"); + pr_err("failed to add new device\n"); return PTR_ERR(nbd); } } -- 2.31.1