include/linux/dev_printk.h:110:2: warning: '%s' directive argument is null
From: kernel test robot
Date: Thu Jan 25 2024 - 05:34:07 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 6098d87eaf31f48153c984e2adadf14762520a87
commit: af628aae8640c268938a0c9344b4ec0d102c0a0a device.h: move dev_printk()-like functions to dev_printk.h
date: 4 years, 1 month ago
config: x86_64-randconfig-012-20240106 (https://download.01.org/0day-ci/archive/20240125/202401251824.Vie9Sa4X-lkp@xxxxxxxxx/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240125/202401251824.Vie9Sa4X-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401251824.Vie9Sa4X-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
drivers/input/mouse/synaptics.c: In function 'synaptics_process_packet':
drivers/input/mouse/synaptics.c:1103:6: warning: suggest braces around empty body in an 'if' statement [-Wempty-body]
1103 | ; /* Nothing, treat a pen as a single finger */
| ^
In file included from include/linux/device.h:15,
from include/linux/input.h:19,
from include/linux/input/mt.h:11,
from drivers/input/mouse/synaptics.c:26:
drivers/input/mouse/synaptics.c: In function 'synaptics_init_ps2':
>> include/linux/dev_printk.h:110:2: warning: '%s' directive argument is null [-Wformat-overflow=]
110 | _dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/input/mouse/psmouse.h:202:2: note: in expansion of macro 'dev_info'
202 | dev_info(&(psmouse)->ps2dev.serio->dev, \
| ^~~~~~~~
drivers/input/mouse/synaptics.c:1628:3: note: in expansion of macro 'psmouse_info'
1628 | psmouse_info(psmouse,
| ^~~~~~~~~~~~
vim +110 include/linux/dev_printk.h
91
92 /*
93 * #defines for all the dev_<level> macros to prefix with whatever
94 * possible use of #define dev_fmt(fmt) ...
95 */
96
97 #define dev_emerg(dev, fmt, ...) \
98 _dev_emerg(dev, dev_fmt(fmt), ##__VA_ARGS__)
99 #define dev_crit(dev, fmt, ...) \
100 _dev_crit(dev, dev_fmt(fmt), ##__VA_ARGS__)
101 #define dev_alert(dev, fmt, ...) \
102 _dev_alert(dev, dev_fmt(fmt), ##__VA_ARGS__)
103 #define dev_err(dev, fmt, ...) \
104 _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
105 #define dev_warn(dev, fmt, ...) \
106 _dev_warn(dev, dev_fmt(fmt), ##__VA_ARGS__)
107 #define dev_notice(dev, fmt, ...) \
108 _dev_notice(dev, dev_fmt(fmt), ##__VA_ARGS__)
109 #define dev_info(dev, fmt, ...) \
> 110 _dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
111
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