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ASoC: acpi: fix: continue searching when machine is ignored

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[ Upstream commit a3e620f842 ]

The machine_quirk may return NULL which means the acpi entries should be
skipped and search for next matched entry is needed, here add return
check here and continue for NULL case.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
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 <sashal@kernel.org>
This commit is contained in:
Keyon Jie 2018-11-16 18:47:04 -06:00 committed by Greg Kroah-Hartman
parent 2a031cab71
commit a8657e6824
1 changed files with 8 additions and 2 deletions
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10
sound/soc/soc-acpi.c
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@ -10,11 +10,17 @@ struct snd_soc_acpi_mach *
snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines)
{
struct snd_soc_acpi_mach *mach;
struct snd_soc_acpi_mach *mach_alt;
for (mach = machines; mach->id[0]; mach++) {
if (acpi_dev_present(mach->id, NULL, -1)) {
if (mach->machine_quirk)
mach = mach->machine_quirk(mach);
if (mach->machine_quirk) {
mach_alt = mach->machine_quirk(mach);
if (!mach_alt)
continue; /* not full match, ignore */
mach = mach_alt;
}
return mach;
}
}