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Date: Tue, 14 Aug 2012 14:17:15 +0200 From: Takashi Iwai <tiwai@...e.de> To: Lee Jones <lee.jones@...aro.org> Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, alsa-devel@...a-project.org, linus.walleij@...ricsson.com, arnd@...db.de, broonie@...nsource.wolfsonmicro.com, STEricsson_nomadik_linux@...t.st.com Subject: Re: [alsa-devel] [PATCH 03/22] ASoC: ab8500: Inform SoC Core that we have our own I/O arrangements At Thu, 9 Aug 2012 16:47:29 +0100, Lee Jones wrote: > > If codec->control_data is not populated SoC Core assumes we want to > use regmap, which fails catastrophically, as we don't have one: > > Unable to handle kernel NULL pointer dereference at virtual address 00000080 > pgd = c0004000 > [00000080] *pgd=00000000 > Internal error: Oops: 17 [#1] PREEMPT SMP ARM > Modules linked in: > CPU: 1 Not tainted (3.5.0-rc6-00884-g0b2419e-dirty #130) > PC is at regmap_read+0x10/0x5c > LR is at hw_read+0x80/0x90 > pc : [<c01a91b8>] lr : [<c0216804>] psr: 60000013 > > CC: alsa-devel@...a-project.org > Signed-off-by: Lee Jones <lee.jones@...aro.org> This was already fixed in ASoC core on Linus tree... Takashi > --- > sound/soc/codecs/ab8500-codec.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c > index 3c79592..23b4018 100644 > --- a/sound/soc/codecs/ab8500-codec.c > +++ b/sound/soc/codecs/ab8500-codec.c > @@ -2406,6 +2406,10 @@ static int ab8500_codec_probe(struct snd_soc_codec *codec) > > /* Setup AB8500 according to board-settings */ > pdata = (struct ab8500_platform_data *)dev_get_platdata(dev->parent); > + > + /* Inform SoC Core that we have our own I/O arrangements. */ > + codec->control_data = (void *)true; > + > status = ab8500_audio_setup_mics(codec, &pdata->codec->amics); > if (status < 0) { > pr_err("%s: Failed to setup mics (%d)!\n", __func__, status); > -- > 1.7.9.5 > > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@...a-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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