[PATCH 0/8] ASoC: Replace sprintf() with sysfs_emit()

[PATCH 0/8] ASoC: Replace sprintf() with sysfs_emit()

[Takashi Iwai]

Hi,

this is a patch set for rather simple conversions from the plain
sprintf() & co to the new helpers, sysfs_emit() and sysfs_emit_at().
No functional changes are expected.


Takashi

===

Takashi Iwai (8):
  ASoC: cs43130: Replace scnprintf() with sysfs_emit()
  ASoC: tlv320aic26: Replace sprintf() with sysfs_emit()
  ASoC: Intel: sst: Replace sprintf() with sysfs_emit()
  ASoC: Intel: catpt: Replace sprintf() with sysfs_emit()
  ASoC: Intel: skylake: Replace sprintf() with sysfs_emit()
  ASoC: core: Replace sprintf() with sysfs_emit()
  ASoC: DAPM: Replace sprintf() calls with sysfs_emit_at()
  ASoC: omap: Replace sprintf() with sysfs_emit()

 sound/soc/codecs/cs43130.c         | 11 +++++------
 sound/soc/codecs/tlv320aic26.c     |  2 +-
 sound/soc/intel/atom/sst/sst.c     |  8 ++++----
 sound/soc/intel/catpt/sysfs.c      |  6 +++---
 sound/soc/intel/skylake/skl-nhlt.c |  2 +-
 sound/soc/soc-core.c               |  2 +-
 sound/soc/soc-dapm.c               |  9 ++++-----
 sound/soc/ti/omap-mcbsp-st.c       |  6 +++---
 sound/soc/ti/omap-mcbsp.c          |  8 ++++----
 9 files changed, 26 insertions(+), 28 deletions(-)

-- 
2.35.3

[PATCH 1/8] ASoC: cs43130: Replace scnprintf() with sysfs_emit()

[Takashi Iwai]

sysfs_emit() is a new helper to simplify the sysfs string output.
Replace the open-code straightforwardly with this new helper.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/codecs/cs43130.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/sound/soc/codecs/cs43130.c b/sound/soc/codecs/cs43130.c
index ca4d47cc9c91..06c6ad3ca2b7 100644
--- a/sound/soc/codecs/cs43130.c
+++ b/sound/soc/codecs/cs43130.c
@@ -1666,10 +1666,9 @@ static int cs43130_show_dc(struct device *dev, char *buf, u8 ch)
 	struct cs43130_private *cs43130 = i2c_get_clientdata(client);
 
 	if (!cs43130->hpload_done)
-		return scnprintf(buf, PAGE_SIZE, "NO_HPLOAD\n");
+		return sysfs_emit(buf, "NO_HPLOAD\n");
 	else
-		return scnprintf(buf, PAGE_SIZE, "%u\n",
-				 cs43130->hpload_dc[ch]);
+		return sysfs_emit(buf, "%u\n", cs43130->hpload_dc[ch]);
 }
 
 static ssize_t hpload_dc_l_show(struct device *dev,
@@ -1705,8 +1704,8 @@ static int cs43130_show_ac(struct device *dev, char *buf, u8 ch)
 
 	if (cs43130->hpload_done && cs43130->ac_meas) {
 		for (i = 0; i < ARRAY_SIZE(cs43130_ac_freq); i++) {
-			tmp = scnprintf(buf + j, PAGE_SIZE - j, "%u\n",
-					cs43130->hpload_ac[i][ch]);
+			tmp = sysfs_emit_at(buf, j, "%u\n",
+					    cs43130->hpload_ac[i][ch]);
 			if (!tmp)
 				break;
 
@@ -1715,7 +1714,7 @@ static int cs43130_show_ac(struct device *dev, char *buf, u8 ch)
 
 		return j;
 	} else {
-		return scnprintf(buf, PAGE_SIZE, "NO_HPLOAD\n");
+		return sysfs_emit(buf, "NO_HPLOAD\n");
 	}
 }
 
-- 
2.35.3

[PATCH 2/8] ASoC: tlv320aic26: Replace sprintf() with sysfs_emit()

[Takashi Iwai]

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces the sprintf()
usage straightforwardly with a new helper, sysfs_emit().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/codecs/tlv320aic26.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/tlv320aic26.c b/sound/soc/codecs/tlv320aic26.c
index 8bae4b475068..e5dfb3d752a3 100644
--- a/sound/soc/codecs/tlv320aic26.c
+++ b/sound/soc/codecs/tlv320aic26.c
@@ -271,7 +271,7 @@ static ssize_t keyclick_show(struct device *dev,
 	freq = (125 << ((val >> 8) & 0x7)) >> 1;
 	len = 2 * (1 + ((val >> 4) & 0xf));
 
-	return sprintf(buf, "amp=%x freq=%iHz len=%iclks\n", amp, freq, len);
+	return sysfs_emit(buf, "amp=%x freq=%iHz len=%iclks\n", amp, freq, len);
 }
 
 /* Any write to the keyclick attribute will trigger the keyclick event */
-- 
2.35.3

[PATCH 3/8] ASoC: Intel: sst: Replace sprintf() with sysfs_emit()

[Takashi Iwai]

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces those usages
straightforwardly with a new helper, sysfs_emit().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/intel/atom/sst/sst.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c
index 160b50f479fb..a0d29510d2bc 100644
--- a/sound/soc/intel/atom/sst/sst.c
+++ b/sound/soc/intel/atom/sst/sst.c
@@ -242,11 +242,11 @@ static ssize_t firmware_version_show(struct device *dev,
 
 	if (ctx->fw_version.type == 0 && ctx->fw_version.major == 0 &&
 	    ctx->fw_version.minor == 0 && ctx->fw_version.build == 0)
-		return sprintf(buf, "FW not yet loaded\n");
+		return sysfs_emit(buf, "FW not yet loaded\n");
 	else
-		return sprintf(buf, "v%02x.%02x.%02x.%02x\n",
-			       ctx->fw_version.type, ctx->fw_version.major,
-			       ctx->fw_version.minor, ctx->fw_version.build);
+		return sysfs_emit(buf, "v%02x.%02x.%02x.%02x\n",
+				  ctx->fw_version.type, ctx->fw_version.major,
+				  ctx->fw_version.minor, ctx->fw_version.build);
 
 }
 
-- 
2.35.3

[PATCH 4/8] ASoC: Intel: catpt: Replace sprintf() with sysfs_emit()

[Takashi Iwai]

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces those usages
straightforwardly with a new helper, sysfs_emit().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/intel/catpt/sysfs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/intel/catpt/sysfs.c b/sound/soc/intel/catpt/sysfs.c
index 1bdbcc04dc71..9b6d2d93a2e7 100644
--- a/sound/soc/intel/catpt/sysfs.c
+++ b/sound/soc/intel/catpt/sysfs.c
@@ -27,8 +27,8 @@ static ssize_t fw_version_show(struct device *dev,
 	if (ret)
 		return CATPT_IPC_ERROR(ret);
 
-	return sprintf(buf, "%d.%d.%d.%d\n", version.type, version.major,
-		       version.minor, version.build);
+	return sysfs_emit(buf, "%d.%d.%d.%d\n", version.type, version.major,
+			  version.minor, version.build);
 }
 static DEVICE_ATTR_RO(fw_version);
 
@@ -37,7 +37,7 @@ static ssize_t fw_info_show(struct device *dev,
 {
 	struct catpt_dev *cdev = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%s\n", cdev->ipc.config.fw_info);
+	return sysfs_emit(buf, "%s\n", cdev->ipc.config.fw_info);
 }
 static DEVICE_ATTR_RO(fw_info);
 
-- 
2.35.3

[PATCH 5/8] ASoC: Intel: skylake: Replace sprintf() with sysfs_emit()

[Takashi Iwai]

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces those usages
straightforwardly with a new helper, sysfs_emit().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/intel/skylake/skl-nhlt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/skylake/skl-nhlt.c b/sound/soc/intel/skylake/skl-nhlt.c
index deb7b820325e..e617b4c335a4 100644
--- a/sound/soc/intel/skylake/skl-nhlt.c
+++ b/sound/soc/intel/skylake/skl-nhlt.c
@@ -61,7 +61,7 @@ static ssize_t platform_id_show(struct device *dev,
 			nhlt->header.oem_revision);
 
 	skl_nhlt_trim_space(platform_id);
-	return sprintf(buf, "%s\n", platform_id);
+	return sysfs_emit(buf, "%s\n", platform_id);
 }
 
 static DEVICE_ATTR_RO(platform_id);
-- 
2.35.3

[PATCH 6/8] ASoC: core: Replace sprintf() with sysfs_emit()

[Takashi Iwai]

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces the sprintf()
usage straightforwardly with a new helper, sysfs_emit().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/soc-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index e824ff1a9fc0..e020ab49cfb1 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -72,7 +72,7 @@ static ssize_t pmdown_time_show(struct device *dev,
 {
 	struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
 
-	return sprintf(buf, "%ld\n", rtd->pmdown_time);
+	return sysfs_emit(buf, "%ld\n", rtd->pmdown_time);
 }
 
 static ssize_t pmdown_time_store(struct device *dev,
-- 
2.35.3

[PATCH 7/8] ASoC: DAPM: Replace sprintf() calls with sysfs_emit_at()

[Takashi Iwai]

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces the open-code
with a new helper, sysfs_emit_at(), by passing the string offset.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/soc-dapm.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index b05231414c1d..73b8bd452ca7 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2386,11 +2386,10 @@ int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
 
 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
-	char *buf)
+					  char *buf, int count)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
 	struct snd_soc_dapm_widget *w;
-	int count = 0;
 	char *state = "not set";
 
 	/* card won't be set for the dummy component, as a spot fix
@@ -2423,7 +2422,7 @@ static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
 		case snd_soc_dapm_pinctrl:
 		case snd_soc_dapm_clock_supply:
 			if (w->name)
-				count += sprintf(buf + count, "%s: %s\n",
+				count += sysfs_emit_at(buf, count, "%s: %s\n",
 					w->name, w->power ? "On":"Off");
 		break;
 		default:
@@ -2445,7 +2444,7 @@ static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
 		state = "Off";
 		break;
 	}
-	count += sprintf(buf + count, "PM State: %s\n", state);
+	count += sysfs_emit_at(buf, count, "PM State: %s\n", state);
 
 	return count;
 }
@@ -2463,7 +2462,7 @@ static ssize_t dapm_widget_show(struct device *dev,
 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
 		struct snd_soc_component *cmpnt = codec_dai->component;
 
-		count += dapm_widget_show_component(cmpnt, buf + count);
+		count = dapm_widget_show_component(cmpnt, buf, count);
 	}
 
 	mutex_unlock(&rtd->card->dapm_mutex);
-- 
2.35.3

[PATCH 8/8] ASoC: omap: Replace sprintf() with sysfs_emit()

[Takashi Iwai]

For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
instead of the raw sprintf() & co.  This patch replaces the open code
with new helpers, sysfs_emit() and sysfs_emit_at(), with the proper
string offset.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/soc/ti/omap-mcbsp-st.c | 6 +++---
 sound/soc/ti/omap-mcbsp.c    | 8 ++++----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/sound/soc/ti/omap-mcbsp-st.c b/sound/soc/ti/omap-mcbsp-st.c
index 7e8179cae92e..8163f453bf36 100644
--- a/sound/soc/ti/omap-mcbsp-st.c
+++ b/sound/soc/ti/omap-mcbsp-st.c
@@ -244,10 +244,10 @@ static ssize_t st_taps_show(struct device *dev,
 
 	spin_lock_irq(&mcbsp->lock);
 	for (i = 0; i < st_data->nr_taps; i++)
-		status += sprintf(&buf[status], (i ? ", %d" : "%d"),
-				  st_data->taps[i]);
+		status += sysfs_emit_at(buf, status, (i ? ", %d" : "%d"),
+					st_data->taps[i]);
 	if (i)
-		status += sprintf(&buf[status], "\n");
+		status += sysfs_emit_at(buf, status, "\n");
 	spin_unlock_irq(&mcbsp->lock);
 
 	return status;
diff --git a/sound/soc/ti/omap-mcbsp.c b/sound/soc/ti/omap-mcbsp.c
index c4ac1f30b9fe..0b377bb7737f 100644
--- a/sound/soc/ti/omap-mcbsp.c
+++ b/sound/soc/ti/omap-mcbsp.c
@@ -517,7 +517,7 @@ static ssize_t prop##_show(struct device *dev,				\
 {									\
 	struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);		\
 									\
-	return sprintf(buf, "%u\n", mcbsp->prop);			\
+	return sysfs_emit(buf, "%u\n", mcbsp->prop);			\
 }									\
 									\
 static ssize_t prop##_store(struct device *dev,				\
@@ -560,11 +560,11 @@ static ssize_t dma_op_mode_show(struct device *dev,
 
 	for (s = &dma_op_modes[i]; i < ARRAY_SIZE(dma_op_modes); s++, i++) {
 		if (dma_op_mode == i)
-			len += sprintf(buf + len, "[%s] ", *s);
+			len += sysfs_emit_at(buf, len, "[%s] ", *s);
 		else
-			len += sprintf(buf + len, "%s ", *s);
+			len += sysfs_emit_at(buf, len, "%s ", *s);
 	}
-	len += sprintf(buf + len, "\n");
+	len += sysfs_emit_at(buf, len, "\n");
 
 	return len;
 }
-- 
2.35.3

Re: [PATCH 8/8] ASoC: omap: Replace sprintf() with sysfs_emit()

[Péter Ujfalusi]

On 01/08/2022 20:01, Takashi Iwai wrote:
> For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
> instead of the raw sprintf() & co.  This patch replaces the open code
> with new helpers, sysfs_emit() and sysfs_emit_at(), with the proper
> string offset.

Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>

> 
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
> ---
>  sound/soc/ti/omap-mcbsp-st.c | 6 +++---
>  sound/soc/ti/omap-mcbsp.c    | 8 ++++----
>  2 files changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/sound/soc/ti/omap-mcbsp-st.c b/sound/soc/ti/omap-mcbsp-st.c
> index 7e8179cae92e..8163f453bf36 100644
> --- a/sound/soc/ti/omap-mcbsp-st.c
> +++ b/sound/soc/ti/omap-mcbsp-st.c
> @@ -244,10 +244,10 @@ static ssize_t st_taps_show(struct device *dev,
>  
>  	spin_lock_irq(&mcbsp->lock);
>  	for (i = 0; i < st_data->nr_taps; i++)
> -		status += sprintf(&buf[status], (i ? ", %d" : "%d"),
> -				  st_data->taps[i]);
> +		status += sysfs_emit_at(buf, status, (i ? ", %d" : "%d"),
> +					st_data->taps[i]);
>  	if (i)
> -		status += sprintf(&buf[status], "\n");
> +		status += sysfs_emit_at(buf, status, "\n");
>  	spin_unlock_irq(&mcbsp->lock);
>  
>  	return status;
> diff --git a/sound/soc/ti/omap-mcbsp.c b/sound/soc/ti/omap-mcbsp.c
> index c4ac1f30b9fe..0b377bb7737f 100644
> --- a/sound/soc/ti/omap-mcbsp.c
> +++ b/sound/soc/ti/omap-mcbsp.c
> @@ -517,7 +517,7 @@ static ssize_t prop##_show(struct device *dev,				\
>  {									\
>  	struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);		\
>  									\
> -	return sprintf(buf, "%u\n", mcbsp->prop);			\
> +	return sysfs_emit(buf, "%u\n", mcbsp->prop);			\
>  }									\
>  									\
>  static ssize_t prop##_store(struct device *dev,				\
> @@ -560,11 +560,11 @@ static ssize_t dma_op_mode_show(struct device *dev,
>  
>  	for (s = &dma_op_modes[i]; i < ARRAY_SIZE(dma_op_modes); s++, i++) {
>  		if (dma_op_mode == i)
> -			len += sprintf(buf + len, "[%s] ", *s);
> +			len += sysfs_emit_at(buf, len, "[%s] ", *s);
>  		else
> -			len += sprintf(buf + len, "%s ", *s);
> +			len += sysfs_emit_at(buf, len, "%s ", *s);
>  	}
> -	len += sprintf(buf + len, "\n");
> +	len += sysfs_emit_at(buf, len, "\n");
>  
>  	return len;
>  }

-- 
Péter

Re: [PATCH 4/8] ASoC: Intel: catpt: Replace sprintf() with sysfs_emit()

[Cezary Rojewski]

On 2022-08-01 7:01 PM, Takashi Iwai wrote:
> For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
> instead of the raw sprintf() & co.  This patch replaces those usages
> straightforwardly with a new helper, sysfs_emit().

Acked-by: Cezary Rojewski <cezary.rojewski@intel.com>

Re: [PATCH 5/8] ASoC: Intel: skylake: Replace sprintf() with sysfs_emit()

[Cezary Rojewski]

On 2022-08-01 7:01 PM, Takashi Iwai wrote:
> For sysfs outputs, it's safer to use a new helper, sysfs_emit(),
> instead of the raw sprintf() & co.  This patch replaces those usages
> straightforwardly with a new helper, sysfs_emit().

Acked-by: Cezary Rojewski <cezary.rojewski@intel.com>

Re: [PATCH 0/8] ASoC: Replace sprintf() with sysfs_emit()

[Mark Brown]

On Mon, 1 Aug 2022 19:01:00 +0200, Takashi Iwai wrote:
> this is a patch set for rather simple conversions from the plain
> sprintf() & co to the new helpers, sysfs_emit() and sysfs_emit_at().
> No functional changes are expected.
> 
> 
> Takashi
> 
> [...]

Applied to

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

Thanks!

[1/8] ASoC: cs43130: Replace scnprintf() with sysfs_emit()
      commit: 32d3679cbb383478c7e9dff590f367f1d7dda975
[2/8] ASoC: tlv320aic26: Replace sprintf() with sysfs_emit()
      commit: 1218d67d376156aa8dc9dbc39616867823f60783
[3/8] ASoC: Intel: sst: Replace sprintf() with sysfs_emit()
      commit: 0aab7bda03086061abd5f8a7794324bb70f769a3
[4/8] ASoC: Intel: catpt: Replace sprintf() with sysfs_emit()
      commit: 7ae8d8ea9427b6fb1ed04b02faf31ad5e3a6de8b
[5/8] ASoC: Intel: skylake: Replace sprintf() with sysfs_emit()
      commit: 11af2b1e33e8c9e72ddf14cd61f9494f34e06c40
[6/8] ASoC: core: Replace sprintf() with sysfs_emit()
      commit: 628d0f72d5828611cae353bd8b49d7647711c283
[7/8] ASoC: DAPM: Replace sprintf() calls with sysfs_emit_at()
      commit: 69f7cbfb08c7ee2ca565f532b0073b847db20bdc
[8/8] ASoC: omap: Replace sprintf() with sysfs_emit()
      commit: a111ae4d7f0796cf2ea0e8bf3ab6c06a401e0560

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