aboutsummaryrefslogtreecommitdiff
path: root/sound
diff options
context:
space:
mode:
authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2017-04-04 19:32:29 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-12 12:41:20 +0200
commit584f4318f9236a8b30b0d8717bb047749bc72095 (patch)
treefe5a839590370490884d5defa7704df7d53ed7b6 /sound
parent4060a32e9d2471b030ce21f0519daecf2f17db5e (diff)
downloadlinux-aarch64-584f4318f9236a8b30b0d8717bb047749bc72095.tar.gz
ASoC: Intel: cht_bsw_rt5645: harden ACPI device detection
[ Upstream commit 42648c2270ca0c96935dfc5d0f5c4f8d2406cf75 ] Fix classic issue of having multiple codecs listed in DSDT but a single one actually enabled. The previous code did not handle such errors and could also lead to uninitalized configurations Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/intel/boards/cht_bsw_rt5645.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c
index 16c94c45ce50..5b3418af6a88 100644
--- a/sound/soc/intel/boards/cht_bsw_rt5645.c
+++ b/sound/soc/intel/boards/cht_bsw_rt5645.c
@@ -358,22 +358,32 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
struct sst_acpi_mach *mach;
const char *i2c_name = NULL;
int dai_index = 0;
+ bool found = false;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
if (!drv)
return -ENOMEM;
+ mach = (&pdev->dev)->platform_data;
+
for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
- if (acpi_dev_found(snd_soc_cards[i].codec_id)) {
+ if (acpi_dev_found(snd_soc_cards[i].codec_id) &&
+ (!strncmp(snd_soc_cards[i].codec_id, mach->id, 8))) {
dev_dbg(&pdev->dev,
"found codec %s\n", snd_soc_cards[i].codec_id);
card = snd_soc_cards[i].soc_card;
drv->acpi_card = &snd_soc_cards[i];
+ found = true;
break;
}
}
+
+ if (!found) {
+ dev_err(&pdev->dev, "No matching HID found in supported list\n");
+ return -ENODEV;
+ }
+
card->dev = &pdev->dev;
- mach = card->dev->platform_data;
sprintf(drv->codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
/* set correct codec name */