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platform/chrome: cros_usbpd_logger: Add __printf annotation to append_str()

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This allows the compiler to verify the format strings vs the types of
the arguments. Also, silence the warning (triggered by W=1):

  cros_usbpd_logger.c:55:2: warning: function ‘append_str’ might be a
  candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
This commit is contained in:
Enric Balletbo i Serra 2020-04-14 22:12:39 +02:00 committed by Benson Leung
parent c032699ef9
commit bbb7ad49b8
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drivers/platform/chrome/cros_usbpd_logger.c
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@ -46,6 +46,7 @@ static const char * const fault_names[] = {
"---", "OCP", "fast OCP", "OVP", "Discharge" "---", "OCP", "fast OCP", "OVP", "Discharge"
}; };
__printf(3, 4)
static int append_str(char *buf, int pos, const char *fmt, ...) static int append_str(char *buf, int pos, const char *fmt, ...)
{ {
va_list args; va_list args;