Commit 40f7828b authored Dec 14, 2016 by Petr Mladek Committed by Linus Torvalds Dec 14, 2016

btrfs: better handle btrfs_printk() defaults

Commit 262c5e86 ("printk/btrfs: handle more message headers")
triggers:

    warning: `ratelimit' may be used uninitialized in this function

with gcc (4.1.2) and probably many other versions.  The code actually is
correct but a bit twisted.  Let's make it more straightforward and set
the default values at the beginning.

Link: http://lkml.kernel.org/r/20161213135246.GQ3506@pathway.suse.cz


Signed-off-by: Petr Mladek <pmladek@suse.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 775a2e29

fs/btrfs/super.c

+3 −9

Original line number	Diff line number	Diff line
		@@ -202,12 +202,12 @@ static struct ratelimit_state printk_limits[] = {
		void btrfs_printk(const struct btrfs_fs_info fs_info, const char fmt, ...)
		{
		struct super_block *sb = fs_info->sb;
		char lvl[PRINTK_MAX_SINGLE_HEADER_LEN + 1];
		char lvl[PRINTK_MAX_SINGLE_HEADER_LEN + 1] = "\0";
		struct va_format vaf;
		va_list args;
		const char *type = NULL;
		int kern_level;
		struct ratelimit_state *ratelimit;
		const char *type = logtypes[4];
		struct ratelimit_state *ratelimit = &printk_limits[4];

		va_start(args, fmt);

		@@ -223,12 +223,6 @@ void btrfs_printk(const struct btrfs_fs_info fs_info, const char fmt, ...)
		fmt += size;
		}

		if (!type) {
		*lvl = '\0';
		type = logtypes[4];
		ratelimit = &printk_limits[4];
		}

		vaf.fmt = fmt;
		vaf.va = &args;