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printk: use gnu_printf format attribute for printk_sprint()

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Fix the following W=1 kernel build warning:

kernel/printk/printk.c: In function 'printk_sprint':
kernel/printk/printk.c:1913:9: warning: function 'printk_sprint' might be
a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210927142203.124730-1-john.ogness@linutronix.de
This commit is contained in:
John Ogness 2021-09-27 16:28:03 +02:06 committed by Petr Mladek
parent 5aa7eea931
commit 264a750472
1 changed files with 1 additions and 0 deletions
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kernel/printk/printk.c
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@ -2066,6 +2066,7 @@ u16 printk_parse_prefix(const char *text, int *level,
return prefix_len;
}
__printf(5, 0)
static u16 printk_sprint(char *text, u16 size, int facility,
enum printk_info_flags *flags, const char *fmt,
va_list args)