Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH] sound: hdmi: avoid dereferencing uninitialized 'jack' pointer | Date | Tue, 16 Feb 2016 17:09:43 +0100 |
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On Tuesday 16 February 2016 16:49:42 Takashi Iwai wrote: > > Thanks for the patch. But I think it's cleaner to fix Kconfig. > > Thinking more of it, maybe splitting jack stuff as a separate module > and does reverse-select to CONFIG_INPUT would be better. Then its > users can select simply SND_JACK, and everything would fit. > >
Adding 'select INPUT' is rather nasty, I think that can lead to circular dependencies, and would likely upset users of small embedded systems that want to use audio but don't want to use input.
Generally speaking, I would recommend never using 'select' on a user visible Kconfig symbol.
Another option might would be to change snd_jack_new() to return an error if that SND_JACK is disabled, and then require all users to handle the error gracefully, i.e. not fail the probe() function but just not use the jack.
Arnd
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