From: Arnd Bergmann <arnd@xxxxxxxx> Date: Thu, 7 Mar 2019 11:31:55 +0100 > Clang points out undefined behavior when building the pcan_usb_pro driver: > > drivers/net/can/usb/peak_usb/pcan_usb_pro.c:136:15: error: passing an object that undergoes default argument promotion to 'va_start' has undefined behavior [-Werror,-Wvarargs] > > Changing the function prototype to avoid argument promotion in the > varargs call avoids the warning, and should make this well-defined. > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Applied.
