Merge tag 'printk-for-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull more printk updates from Petr Mladek:

 - Silence warnings about candidates for ‘gnu_print’ format attribute

* tag 'printk-for-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  vsnprintf: Silence false positive GCC warning for va_format()
  vsnprintf: Drop unused const char fmt * in va_format()
  vsnprintf: Mark binary printing functions with __printf() attribute
  tracing: Mark binary printing functions with __printf() attribute
  seq_file: Mark binary printing functions with __printf() attribute
  seq_buf: Mark binary printing functions with __printf() attribute

5 files changed, 11 insertions, 10 deletions

diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h
index fe41da005970..52791e070506 100644
--- a/include/linux/seq_buf.h
+++ b/include/linux/seq_buf.h
@@ -167,8 +167,8 @@ extern int seq_buf_hex_dump(struct seq_buf *s, const char *prefix_str,
 			    const void *buf, size_t len, bool ascii);
 
 #ifdef CONFIG_BINARY_PRINTF
-extern int
-seq_buf_bprintf(struct seq_buf *s, const char *fmt, const u32 *binary);
+__printf(2, 0)
+int seq_buf_bprintf(struct seq_buf *s, const char *fmt, const u32 *binary);
 #endif
 
 void seq_buf_do_printk(struct seq_buf *s, const char *lvl);
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 2fb266ea69fa..d6ebf0596510 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -181,6 +181,7 @@ int seq_open_private(struct file *, const struct seq_operations *, int);
 int seq_release_private(struct inode *, struct file *);
 
 #ifdef CONFIG_BINARY_PRINTF
+__printf(2, 0)
 void seq_bprintf(struct seq_file *m, const char *f, const u32 *binary);
 #endif
 
diff --git a/include/linux/string.h b/include/linux/string.h
index 0403a4ca4c11..01621ad0f598 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -336,8 +336,8 @@ int __sysfs_match_string(const char * const *array, size_t n, const char *s);
 #define sysfs_match_string(_a, _s) __sysfs_match_string(_a, ARRAY_SIZE(_a), _s)
 
 #ifdef CONFIG_BINARY_PRINTF
-int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args);
-int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf);
+__printf(3, 0) int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args);
+__printf(3, 0) int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf);
 #endif
 
 extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos,
diff --git a/include/linux/trace.h b/include/linux/trace.h
index fdcd76b7be83..7eaad857dee0 100644
--- a/include/linux/trace.h
+++ b/include/linux/trace.h
@@ -72,8 +72,8 @@ static inline int unregister_ftrace_export(struct trace_export *export)
 static inline void trace_printk_init_buffers(void)
 {
 }
-static inline int trace_array_printk(struct trace_array *tr, unsigned long ip,
-				     const char *fmt, ...)
+static inline __printf(3, 4)
+int trace_array_printk(struct trace_array *tr, unsigned long ip, const char *fmt, ...)
 {
 	return 0;
 }
diff --git a/include/linux/trace_seq.h b/include/linux/trace_seq.h
index 1ef95c0287f0..a93ed5ac3226 100644
--- a/include/linux/trace_seq.h
+++ b/include/linux/trace_seq.h
@@ -88,8 +88,8 @@ extern __printf(2, 3)
 void trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
 extern __printf(2, 0)
 void trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args);
-extern void
-trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary);
+extern __printf(2, 0)
+void trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary);
 extern int trace_print_seq(struct seq_file *m, struct trace_seq *s);
 extern int trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
 			     int cnt);
@@ -113,8 +113,8 @@ static inline __printf(2, 3)
 void trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
 {
 }
-static inline void
-trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary)
+static inline __printf(2, 0)
+void trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary)
 {
 }