[PATCH] ASoC: tas2781: remove unused acpi_subysystem_id
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver") CC: stable@vger.kernel.org Signed-off-by: Gergo Koteles soyer@irl.hu --- include/sound/tas2781.h | 1 - sound/pci/hda/tas2781_hda_i2c.c | 10 ---------- sound/soc/codecs/tas2781-comlib.c | 1 - 3 files changed, 12 deletions(-)
diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h index 9aff384941de..99ca3e401fd1 100644 --- a/include/sound/tas2781.h +++ b/include/sound/tas2781.h @@ -103,7 +103,6 @@ struct tasdevice_priv { struct tm tm;
enum device_catlog_id catlog_id; - const char *acpi_subsystem_id; unsigned char cal_binaryname[TASDEVICE_MAX_CHANNELS][64]; unsigned char crc8_lkp_tbl[CRC8_TABLE_SIZE]; unsigned char coef_binaryname[64]; diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c index 1bfb00102a77..02c85084aca5 100644 --- a/sound/pci/hda/tas2781_hda_i2c.c +++ b/sound/pci/hda/tas2781_hda_i2c.c @@ -129,18 +129,8 @@ static int tas2781_read_acpi(struct tasdevice_priv *p, const char *hid)
acpi_dev_free_resource_list(&resources); strscpy(p->dev_name, hid, sizeof(p->dev_name)); - physdev = get_device(acpi_get_first_physical_node(adev)); acpi_dev_put(adev);
- /* No side-effect to the playback even if subsystem_id is NULL*/ - sub = acpi_get_subsystem_id(ACPI_HANDLE(physdev)); - if (IS_ERR(sub)) - sub = NULL; - - p->acpi_subsystem_id = sub; - - put_device(physdev); - return 0;
err: diff --git a/sound/soc/codecs/tas2781-comlib.c b/sound/soc/codecs/tas2781-comlib.c index 5d0e5348b361..3aa81514dad7 100644 --- a/sound/soc/codecs/tas2781-comlib.c +++ b/sound/soc/codecs/tas2781-comlib.c @@ -408,7 +408,6 @@ void tasdevice_remove(struct tasdevice_priv *tas_priv) { if (gpio_is_valid(tas_priv->irq_info.irq_gpio)) gpio_free(tas_priv->irq_info.irq_gpio); - kfree(tas_priv->acpi_subsystem_id); mutex_destroy(&tas_priv->codec_lock); } EXPORT_SYMBOL_GPL(tasdevice_remove);
base-commit: 610010737f74482a61896596a0116876ecf9e65c
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver") CC: stable@vger.kernel.org Signed-off-by: Gergo Koteles soyer@irl.hu --- include/sound/tas2781.h | 1 - sound/pci/hda/tas2781_hda_i2c.c | 11 ----------- sound/soc/codecs/tas2781-comlib.c | 1 - 3 files changed, 13 deletions(-)
diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h index 9aff384941de..99ca3e401fd1 100644 --- a/include/sound/tas2781.h +++ b/include/sound/tas2781.h @@ -103,7 +103,6 @@ struct tasdevice_priv { struct tm tm;
enum device_catlog_id catlog_id; - const char *acpi_subsystem_id; unsigned char cal_binaryname[TASDEVICE_MAX_CHANNELS][64]; unsigned char crc8_lkp_tbl[CRC8_TABLE_SIZE]; unsigned char coef_binaryname[64]; diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c index 1bfb00102a77..2fd391bc693a 100644 --- a/sound/pci/hda/tas2781_hda_i2c.c +++ b/sound/pci/hda/tas2781_hda_i2c.c @@ -111,7 +111,6 @@ static int tas2781_get_i2c_res(struct acpi_resource *ares, void *data) static int tas2781_read_acpi(struct tasdevice_priv *p, const char *hid) { struct acpi_device *adev; - struct device *physdev; LIST_HEAD(resources); const char *sub; int ret; @@ -129,18 +128,8 @@ static int tas2781_read_acpi(struct tasdevice_priv *p, const char *hid)
acpi_dev_free_resource_list(&resources); strscpy(p->dev_name, hid, sizeof(p->dev_name)); - physdev = get_device(acpi_get_first_physical_node(adev)); acpi_dev_put(adev);
- /* No side-effect to the playback even if subsystem_id is NULL*/ - sub = acpi_get_subsystem_id(ACPI_HANDLE(physdev)); - if (IS_ERR(sub)) - sub = NULL; - - p->acpi_subsystem_id = sub; - - put_device(physdev); - return 0;
err: diff --git a/sound/soc/codecs/tas2781-comlib.c b/sound/soc/codecs/tas2781-comlib.c index 5d0e5348b361..3aa81514dad7 100644 --- a/sound/soc/codecs/tas2781-comlib.c +++ b/sound/soc/codecs/tas2781-comlib.c @@ -408,7 +408,6 @@ void tasdevice_remove(struct tasdevice_priv *tas_priv) { if (gpio_is_valid(tas_priv->irq_info.irq_gpio)) gpio_free(tas_priv->irq_info.irq_gpio); - kfree(tas_priv->acpi_subsystem_id); mutex_destroy(&tas_priv->codec_lock); } EXPORT_SYMBOL_GPL(tasdevice_remove);
base-commit: 610010737f74482a61896596a0116876ecf9e65c
On Tue, Feb 06, 2024 at 10:34:15PM +0100, Gergo Koteles wrote:
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver") CC: stable@vger.kernel.org
This is clearly a cleanup, not a bugfix.
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver") CC: stable@vger.kernel.org Signed-off-by: Gergo Koteles soyer@irl.hu --- Changes since v2: remove sub from tas2781_read_acpi Changes since v1: remove physdev from tas2781_read_acpi --- include/sound/tas2781.h | 1 - sound/pci/hda/tas2781_hda_i2c.c | 12 ------------ sound/soc/codecs/tas2781-comlib.c | 1 - 3 files changed, 14 deletions(-)
diff --git a/include/sound/tas2781.h b/include/sound/tas2781.h index 9aff384941de..99ca3e401fd1 100644 --- a/include/sound/tas2781.h +++ b/include/sound/tas2781.h @@ -103,7 +103,6 @@ struct tasdevice_priv { struct tm tm;
enum device_catlog_id catlog_id; - const char *acpi_subsystem_id; unsigned char cal_binaryname[TASDEVICE_MAX_CHANNELS][64]; unsigned char crc8_lkp_tbl[CRC8_TABLE_SIZE]; unsigned char coef_binaryname[64]; diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c index 1bfb00102a77..4c9a788c3501 100644 --- a/sound/pci/hda/tas2781_hda_i2c.c +++ b/sound/pci/hda/tas2781_hda_i2c.c @@ -111,9 +111,7 @@ static int tas2781_get_i2c_res(struct acpi_resource *ares, void *data) static int tas2781_read_acpi(struct tasdevice_priv *p, const char *hid) { struct acpi_device *adev; - struct device *physdev; LIST_HEAD(resources); - const char *sub; int ret;
adev = acpi_dev_get_first_match_dev(hid, NULL, -1); @@ -129,18 +127,8 @@ static int tas2781_read_acpi(struct tasdevice_priv *p, const char *hid)
acpi_dev_free_resource_list(&resources); strscpy(p->dev_name, hid, sizeof(p->dev_name)); - physdev = get_device(acpi_get_first_physical_node(adev)); acpi_dev_put(adev);
- /* No side-effect to the playback even if subsystem_id is NULL*/ - sub = acpi_get_subsystem_id(ACPI_HANDLE(physdev)); - if (IS_ERR(sub)) - sub = NULL; - - p->acpi_subsystem_id = sub; - - put_device(physdev); - return 0;
err: diff --git a/sound/soc/codecs/tas2781-comlib.c b/sound/soc/codecs/tas2781-comlib.c index 5d0e5348b361..3aa81514dad7 100644 --- a/sound/soc/codecs/tas2781-comlib.c +++ b/sound/soc/codecs/tas2781-comlib.c @@ -408,7 +408,6 @@ void tasdevice_remove(struct tasdevice_priv *tas_priv) { if (gpio_is_valid(tas_priv->irq_info.irq_gpio)) gpio_free(tas_priv->irq_info.irq_gpio); - kfree(tas_priv->acpi_subsystem_id); mutex_destroy(&tas_priv->codec_lock); } EXPORT_SYMBOL_GPL(tasdevice_remove);
base-commit: 610010737f74482a61896596a0116876ecf9e65c
On Tue, Feb 06, 2024 at 10:49:29PM +0100, Gergo Koteles wrote:
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Please don't send new patches in reply to old patches or serieses, this makes it harder for both people and tools to understand what is going on - it can bury things in mailboxes and make it difficult to keep track of what current patches are, both for the new patches and the old ones.
Hi Mark,
On Wed, 2024-02-07 at 10:07 +0000, Mark Brown wrote:
On Tue, Feb 06, 2024 at 10:49:29PM +0100, Gergo Koteles wrote:
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Please don't send new patches in reply to old patches or serieses, this makes it harder for both people and tools to understand what is going on - it can bury things in mailboxes and make it difficult to keep track of what current patches are, both for the new patches and the old ones.
Alright. I read somewhere once. Sorry for the noise.
thanks, Gergo
On Tue, Feb 06, 2024 at 09:25:50PM +0100, Gergo Koteles wrote:
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver")
What does this really "fix"? It's just a cleanup.
CC: stable@vger.kernel.org
Again, what bug is this fixing?
Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html about what should be tagged for stable kernels, which this patch series does not seem to fix.
thanks,
greg k-h
Hi Greg,
On Wed, 2024-02-07 at 10:02 +0000, Greg KH wrote:
On Tue, Feb 06, 2024 at 09:25:50PM +0100, Gergo Koteles wrote:
The acpi_subysystem_id is only written and freed, not read, so unnecessary.
Fixes: ef3bcde75d06 ("ASoC: tas2781: Add tas2781 driver")
What does this really "fix"? It's just a cleanup.
CC: stable@vger.kernel.org
Again, what bug is this fixing?
Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html about what should be tagged for stable kernels, which this patch series does not seem to fix.
Yes, you are right, this is not really a bug. I took the scope of "oh, that's not good" too wide. Sorry for the noise.
thanks, Gergo
participants (3)
-
Gergo Koteles -
Greg KH -
Mark Brown