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From: lee.jones@linaro.org (Lee Jones)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/5] ASoC: ab8500: Inform SoC Core that we have our own I/O arrangements
Date: Tue, 31 Jul 2012 15:45:41 +0100	[thread overview]
Message-ID: <1343745944-18418-3-git-send-email-lee.jones@linaro.org> (raw)
In-Reply-To: <1343745944-18418-1-git-send-email-lee.jones@linaro.org>

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

Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 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

  parent reply	other threads:[~2012-07-31 14:45 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-31 14:45 [PATCH 0/6] Bugfixes and clean-ups bound for the v3.6 RCs Lee Jones
2012-07-31 14:45 ` [PATCH 1/5] ASoC: dapm: If one widget fails, do not force all subsequent widgets to fail too Lee Jones
2012-07-31 14:56   ` Mark Brown
2012-07-31 15:09     ` Lee Jones
2012-07-31 15:15       ` Mark Brown
2012-07-31 14:45 ` Lee Jones [this message]
2012-07-31 15:38   ` [PATCH 2/5] ASoC: ab8500: Inform SoC Core that we have our own I/O arrangements Mark Brown
2012-07-31 14:45 ` [PATCH 3/5] ARM: ux500: Remove unused snowball_of_platform_devs struct Lee Jones
2012-07-31 14:45 ` [PATCH 4/5] ARM: ux500: Fix merge error, so such struct 'snd_soc_u8500' Lee Jones
2012-07-31 14:45 ` [PATCH 5/5] ARM: ux500: Ensure probing of Audio devices when Device Tree is enabled Lee Jones

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