Re: [alsa-devel] [PATCH] ASoC: simple-card: Add mic and hp detect gpios.

On Tue, Oct 07, 2014 at 02:32:57PM +0200, Geert Uytterhoeven wrote:

Hence on r8a7740/armadillo-legacy, which uses platform devices instead of DT:

sh-mobile-hdmi sh-mobile-hdmi: SH Mobile HDMI Audio Codec
sh-mobile-hdmi sh-mobile-hdmi: ASoC: DAPM unknown pin Headphones
sh-mobile-hdmi sh-mobile-hdmi: ASoC: DAPM unknown pin Mic Jack

After that the kernel log is spammed ca. 7 times per second with:

sh-mobile-hdmi sh-mobile-hdmi: ASoC: DAPM unknown pin Headphones

Reverting commit 3fe240326cc395c66 ("ASoC: simple-card: Add mic and hp detect gpios.") fixes this.

The fix here is to not allow 0 as a GPIO in the core code (which should've been there already).