From 8db1486065141e619e4855b84e350ef32064f7e1 Mon Sep 17 00:00:00 2001 From: Nicolas Iooss Date: Fri, 17 Jul 2015 16:23:42 -0700 Subject: include, lib: add __printf attributes to several function prototypes Using __printf attributes helps to detect several format string issues at compile time (even though -Wformat-security is currently disabled in Makefile). For example it can detect when formatting a pointer as a number, like the issue fixed in commit a3fa71c40f18 ("wl18xx: show rx_frames_per_rates as an array as it really is"), or when the arguments do not match the format string, c.f. for example commit 5ce1aca81435 ("reiserfs: fix __RASSERT format string"). To prevent similar bugs in the future, add a __printf attribute to every function prototype which needs one in include/linux/ and lib/. These functions were mostly found by using gcc's -Wsuggest-attribute=format flag. Signed-off-by: Nicolas Iooss Cc: Greg Kroah-Hartman Cc: Felipe Balbi Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/clkdev.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux/clkdev.h') diff --git a/include/linux/clkdev.h b/include/linux/clkdev.h index a240b18e86fa..08bffcc466de 100644 --- a/include/linux/clkdev.h +++ b/include/linux/clkdev.h @@ -33,18 +33,19 @@ struct clk_lookup { } struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id, - const char *dev_fmt, ...); + const char *dev_fmt, ...) __printf(3, 4); void clkdev_add(struct clk_lookup *cl); void clkdev_drop(struct clk_lookup *cl); struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id, - const char *dev_fmt, ...); + const char *dev_fmt, ...) __printf(3, 4); void clkdev_add_table(struct clk_lookup *, size_t); int clk_add_alias(const char *, const char *, const char *, struct device *); -int clk_register_clkdev(struct clk *, const char *, const char *, ...); +int clk_register_clkdev(struct clk *, const char *, const char *, ...) + __printf(3, 4); int clk_register_clkdevs(struct clk *, struct clk_lookup *, size_t); #ifdef CONFIG_COMMON_CLK -- cgit v1.2.3