Commit f4e981cb authored by Nicolas Iooss's avatar Nicolas Iooss Committed by Petr Mladek

printk: add __printf attributes to internal functions

When compiling with -Wsuggest-attribute=format, gcc complains that some
functions in kernel/printk/printk_safe.c transmit their argument to
printf-like functions without having a printf attribute. Silence these
warnings by adding relevant __printf attributes.

Link: http://lkml.kernel.org/r/20170524054950.6722-1-nicolas.iooss_linux@m4x.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: default avatarNicolas Iooss <nicolas.iooss_linux@m4x.org>
Reviewed-by: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: default avatarPetr Mladek <pmladek@suse.com>
parent 719f6a70
......@@ -80,8 +80,8 @@ static void queue_flush_work(struct printk_safe_seq_buf *s)
* happen, printk_safe_log_store() will notice the buffer->len mismatch
* and repeat the write.
*/
static int printk_safe_log_store(struct printk_safe_seq_buf *s,
const char *fmt, va_list args)
static __printf(2, 0) int printk_safe_log_store(struct printk_safe_seq_buf *s,
const char *fmt, va_list args)
{
int add;
size_t len;
......@@ -299,7 +299,7 @@ void printk_safe_flush_on_panic(void)
* one writer running. But the buffer might get flushed from another
* CPU, so we need to be careful.
*/
static int vprintk_nmi(const char *fmt, va_list args)
static __printf(1, 0) int vprintk_nmi(const char *fmt, va_list args)
{
struct printk_safe_seq_buf *s = this_cpu_ptr(&nmi_print_seq);
......@@ -330,7 +330,7 @@ void printk_nmi_exit(void)
#else
static int vprintk_nmi(const char *fmt, va_list args)
static __printf(1, 0) int vprintk_nmi(const char *fmt, va_list args)
{
return 0;
}
......@@ -342,7 +342,7 @@ static int vprintk_nmi(const char *fmt, va_list args)
* into itself. It uses a per-CPU buffer to store the message, just like
* NMI.
*/
static int vprintk_safe(const char *fmt, va_list args)
static __printf(1, 0) int vprintk_safe(const char *fmt, va_list args)
{
struct printk_safe_seq_buf *s = this_cpu_ptr(&safe_print_seq);
......
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