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[5.16,regression,fix] ASoC: soc-acpi: Set mach->id field on comp_ids matches

Message ID 20211118153014.349222-1-hdegoede@redhat.com (mailing list archive)
State Accepted
Commit 28c916ade1bd4205958f74bb817fd3a05dbb7afc
Headers show
Series [5.16,regression,fix] ASoC: soc-acpi: Set mach->id field on comp_ids matches | expand

Commit Message

Hans de Goede Nov. 18, 2021, 3:30 p.m. UTC
Commit dac7cbd55dca ("ASoC: Intel: soc-acpi-byt: shrink tables using
compatible IDs") and commit 959ae8215a9e ("ASoC: Intel: soc-acpi-cht:
shrink tables using compatible IDs") simplified the match tables in
soc-acpi-intel-byt-match.c and soc-acpi-intel-cht-match.c by merging
identical entries using the new .comp_ids snd_soc_acpi_mach field to
point a single entry to multiple ACPI HIDs and clearing the previously
unique per entry .id field.

But various machine drivers from sound/soc/intel/boards rely on mach->id
in one or more ways, e.g. some drivers contain the following snippets:

	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);

	pkg_found = snd_soc_acpi_find_package_from_hid(mach->id, ...

	if (!strncmp(snd_soc_cards[i].codec_id, mach->id, 8)) { ...

All of which are broken by the match table shrinking.

Make the snd_soc_acpi_mach.id field non const (the storage for the tables
already is non const) and on a comps_ids match copy the matching HID to
the id field to fix this.

Fixes: dac7cbd55dca ("ASoC: Intel: soc-acpi-byt: shrink tables using compatible IDs")
Fixes: 959ae8215a9e ("ASoC: Intel: soc-acpi-cht: shrink tables using compatible IDs")
Suggested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Brent Lu <brent.lu@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 include/sound/soc-acpi.h | 2 +-
 sound/soc/soc-acpi.c     | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

Comments

Pierre-Louis Bossart Nov. 18, 2021, 4:01 p.m. UTC | #1
On 11/18/21 9:30 AM, Hans de Goede wrote:
> Commit dac7cbd55dca ("ASoC: Intel: soc-acpi-byt: shrink tables using
> compatible IDs") and commit 959ae8215a9e ("ASoC: Intel: soc-acpi-cht:
> shrink tables using compatible IDs") simplified the match tables in
> soc-acpi-intel-byt-match.c and soc-acpi-intel-cht-match.c by merging
> identical entries using the new .comp_ids snd_soc_acpi_mach field to
> point a single entry to multiple ACPI HIDs and clearing the previously
> unique per entry .id field.
> 
> But various machine drivers from sound/soc/intel/boards rely on mach->id
> in one or more ways, e.g. some drivers contain the following snippets:
> 
> 	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
> 
> 	pkg_found = snd_soc_acpi_find_package_from_hid(mach->id, ...
> 
> 	if (!strncmp(snd_soc_cards[i].codec_id, mach->id, 8)) { ...
> 
> All of which are broken by the match table shrinking.
> 
> Make the snd_soc_acpi_mach.id field non const (the storage for the tables
> already is non const) and on a comps_ids match copy the matching HID to
> the id field to fix this.
> 
> Fixes: dac7cbd55dca ("ASoC: Intel: soc-acpi-byt: shrink tables using compatible IDs")
> Fixes: 959ae8215a9e ("ASoC: Intel: soc-acpi-cht: shrink tables using compatible IDs")
> Suggested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> Cc: Brent Lu <brent.lu@intel.com>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Thanks Hans for reporting and fixing this, much appreciated.

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Mark Brown Nov. 22, 2021, 11:59 p.m. UTC | #2
On Thu, 18 Nov 2021 16:30:14 +0100, Hans de Goede wrote:
> Commit dac7cbd55dca ("ASoC: Intel: soc-acpi-byt: shrink tables using
> compatible IDs") and commit 959ae8215a9e ("ASoC: Intel: soc-acpi-cht:
> shrink tables using compatible IDs") simplified the match tables in
> soc-acpi-intel-byt-match.c and soc-acpi-intel-cht-match.c by merging
> identical entries using the new .comp_ids snd_soc_acpi_mach field to
> point a single entry to multiple ACPI HIDs and clearing the previously
> unique per entry .id field.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-linus

Thanks!

[1/1] ASoC: soc-acpi: Set mach->id field on comp_ids matches
      commit: 28c916ade1bd4205958f74bb817fd3a05dbb7afc

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark
diff mbox series

Patch

diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h
index 31f4c4f9aeea..ac0893df9c76 100644
--- a/include/sound/soc-acpi.h
+++ b/include/sound/soc-acpi.h
@@ -147,7 +147,7 @@  struct snd_soc_acpi_link_adr {
  */
 /* Descriptor for SST ASoC machine driver */
 struct snd_soc_acpi_mach {
-	const u8 id[ACPI_ID_LEN];
+	u8 id[ACPI_ID_LEN];
 	const struct snd_soc_acpi_codecs *comp_ids;
 	const u32 link_mask;
 	const struct snd_soc_acpi_link_adr *links;
diff --git a/sound/soc/soc-acpi.c b/sound/soc/soc-acpi.c
index 2ae99b49d3f5..cbd7ea48837b 100644
--- a/sound/soc/soc-acpi.c
+++ b/sound/soc/soc-acpi.c
@@ -20,8 +20,10 @@  static bool snd_soc_acpi_id_present(struct snd_soc_acpi_mach *machine)
 
 	if (comp_ids) {
 		for (i = 0; i < comp_ids->num_codecs; i++) {
-			if (acpi_dev_present(comp_ids->codecs[i], NULL, -1))
+			if (acpi_dev_present(comp_ids->codecs[i], NULL, -1)) {
+				strscpy(machine->id, comp_ids->codecs[i], ACPI_ID_LEN);
 				return true;
+			}
 		}
 	}