On Tue, 1 Apr 2025 15:36:37 +0200, Miquel Raynal wrote:
__VA_OPT__ is a macro that is useful when some arguments can be present or not to entirely skip some part of a definition. Unfortunately, it is a too recent addition that some of the still supported old GCC versions do not know about, and is anyway not part of C11 that is the version used in the kernel.
Find a trick to remove this macro, typically '__VA_ARGS__ + 0' is a workaround used in netlink.h which works very well here, as we either expect:
- 0
- A positive value
- No value, which means the field should be 0.
Reported-by: kernel test robot lkp@intel.com Closes: https://lore.kernel.org/oe-kbuild-all/202503181330.YcDXGy7F-lkp@intel.com/ Fixes: 7ce0d16d5802 ("mtd: spinand: Add an optional frequency to read from cache macros") Cc: stable@vger.kernel.org Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com
Tested-by: Jean Delvare jdelvare@suse.de
Thanks Miquel!