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authorNicolas Iooss <nicolas.iooss_linux@m4x.org>2017-05-24 07:49:50 +0200
committerPetr Mladek <pmladek@suse.com>2017-06-13 16:36:02 +0200
commitf4e981cba2dec675d40ac4f270b7e8ac164c9004 (patch)
treea0132cc2af987efc099efefaa304178941ff154e /kernel/printk/printk_safe.c
parent719f6a7040f1bdaf96fcc709d272548facb88e90 (diff)
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: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'kernel/printk/printk_safe.c')
-rw-r--r--kernel/printk/printk_safe.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/printk/printk_safe.c b/kernel/printk/printk_safe.c
index 03a42a539b20..3cdaeaef9ce1 100644
--- a/kernel/printk/printk_safe.c
+++ b/kernel/printk/printk_safe.c
@@ -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);