diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2022-07-25 14:53:41 -0500 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-07-25 22:37:00 +0100 |
| commit | e51699505042fb365df3a0ce68b850ccd9ad0108 (patch) | |
| tree | 7855c3b8bc55d720624f90fea6ec671df47ed8e3 /sound | |
| parent | be0aa8d4b0fcb4532bf7973141e911998ab39508 (diff) | |
| download | lwn-e51699505042fb365df3a0ce68b850ccd9ad0108.tar.gz lwn-e51699505042fb365df3a0ce68b850ccd9ad0108.zip | |
ASoC: SOF: Intel: hda: add sanity check on SSP index reported by NHLT
We should have a limited trust in the BIOS and verify that the SSP
index reported in NHLT is valid for each platform.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220725195343.145603-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/sof/intel/hda.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index d337d55050e2..8639ea63a10d 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -1527,6 +1527,7 @@ struct snd_soc_acpi_mach *hda_machine_select(struct snd_sof_dev *sdev) if (tplg_fixup && mach->tplg_quirk_mask & SND_SOC_ACPI_TPLG_INTEL_SSP_NUMBER && mach->mach_params.i2s_link_mask) { + const struct sof_intel_dsp_desc *chip = get_chip_info(sdev->pdata); int ssp_num; if (hweight_long(mach->mach_params.i2s_link_mask) > 1 && @@ -1536,6 +1537,12 @@ struct snd_soc_acpi_mach *hda_machine_select(struct snd_sof_dev *sdev) /* fls returns 1-based results, SSPs indices are 0-based */ ssp_num = fls(mach->mach_params.i2s_link_mask) - 1; + if (ssp_num >= chip->ssp_count) { + dev_err(sdev->dev, "Invalid SSP %d, max on this platform is %d\n", + ssp_num, chip->ssp_count); + return NULL; + } + tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL, "%s%s%d", sof_pdata->tplg_filename, |