Re: [PATCH 4/9] mfd: max8925: fix trivial build warning for non-dt

Arnd Bergmann
2013-03-11T16:31:22Z

On Thursday 14 February 2013, Arnd Bergmann wrote:
> Patch fe527ea5a "mfd: max8925: Support dt for backlight"
> added a new function for DT probing but introduced a
> build warning for the case where CONFIG_OF is disabled:
>
> drivers/video/backlight/max8925_bl.c: In function 'max8925_backlight_probe':
> drivers/video/backlight/max8925_bl.c:177:3: warning: statement with no effect [-Wunused-value]
>
> A much nicer fix is to use the IS_ENABLED keyword to
> have the same effect of dropping the device tree specific
> function when it's not needed.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Cc: Qing Xu <qingx@marvell.com>
> Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
> Cc: Samuel Ortiz <sameo@linux.intel.com>

Hmm, it seems I already had this patch for the issue, but for some reason it
didn't apply for some time and when I looked at the problem again now, I found
more issues, and I'd suggest reverting commit fe527ea5a completely. There are
similar problems in the max8925_power patch.

Arnd