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* [PATCH] ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val
@ 2018-05-02 14:29 Colin King
  2018-05-02 15:20 ` [alsa-devel] " Pierre-Louis Bossart
  2018-05-03  1:32 ` Applied "ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val" to the asoc tree Mark Brown
  0 siblings, 2 replies; 3+ messages in thread
From: Colin King @ 2018-05-02 14:29 UTC (permalink / raw)
  To: Liam Girdwood, Mark Brown, Jaroslav Kysela, Takashi Iwai,
	Andy Shevchenko, alsa-devel
  Cc: kernel-janitors, linux-kernel

From: Colin Ian King <colin.king@canonical.com>

Currently, the check that ret_val is not -ENOENT is always true and
the quirk bit BYT_RY5651_MCLK_EN is never being cleared because ret_val
is always zero at this point from a previous assignment earlier on.
I believe that ret_val should actually be assigned to the return from
devm_clk_get() as this can return -ENOENT (from a deeper call to
clk_get_sys) and that was the original intention to check this.

Detected by CoverityScan, CID#1460228 ("Logically dead code")

Fixes: 02c0a3b3047f ("ASoC: Intel: bytcr_rt5651: add MCLK, quirks and cleanups")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 sound/soc/intel/boards/bytcr_rt5651.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c
index 3c7d93520c52..469e2695d121 100644
--- a/sound/soc/intel/boards/bytcr_rt5651.c
+++ b/sound/soc/intel/boards/bytcr_rt5651.c
@@ -856,9 +856,10 @@ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
 	if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
 		priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
 		if (IS_ERR(priv->mclk)) {
+			ret_val = PTR_ERR(priv->mclk);
 			dev_err(&pdev->dev,
-				"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
-				PTR_ERR(priv->mclk));
+				"Failed to get MCLK from pmc_plt_clk_3: %d\n",
+				ret_val);
 			/*
 			 * Fall back to bit clock usage for -ENOENT (clock not
 			 * available likely due to missing dependencies), bail
-- 
2.17.0

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [alsa-devel] [PATCH] ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val
  2018-05-02 14:29 [PATCH] ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val Colin King
@ 2018-05-02 15:20 ` Pierre-Louis Bossart
  2018-05-03  1:32 ` Applied "ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val" to the asoc tree Mark Brown
  1 sibling, 0 replies; 3+ messages in thread
From: Pierre-Louis Bossart @ 2018-05-02 15:20 UTC (permalink / raw)
  To: Colin King, Liam Girdwood, Mark Brown, Jaroslav Kysela,
	Takashi Iwai, Andy Shevchenko, alsa-devel
  Cc: kernel-janitors, linux-kernel

On 5/2/18 9:29 AM, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Currently, the check that ret_val is not -ENOENT is always true and
> the quirk bit BYT_RY5651_MCLK_EN is never being cleared because ret_val
> is always zero at this point from a previous assignment earlier on.
> I believe that ret_val should actually be assigned to the return from
> devm_clk_get() as this can return -ENOENT (from a deeper call to
> clk_get_sys) and that was the original intention to check this.
> 
> Detected by CoverityScan, CID#1460228 ("Logically dead code")

nice catch, the fix is consistent with what is done for rt5640.

Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

> 
> Fixes: 02c0a3b3047f ("ASoC: Intel: bytcr_rt5651: add MCLK, quirks and cleanups")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>   sound/soc/intel/boards/bytcr_rt5651.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c
> index 3c7d93520c52..469e2695d121 100644
> --- a/sound/soc/intel/boards/bytcr_rt5651.c
> +++ b/sound/soc/intel/boards/bytcr_rt5651.c
> @@ -856,9 +856,10 @@ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
>   	if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
>   		priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
>   		if (IS_ERR(priv->mclk)) {
> +			ret_val = PTR_ERR(priv->mclk);
>   			dev_err(&pdev->dev,
> -				"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
> -				PTR_ERR(priv->mclk));
> +				"Failed to get MCLK from pmc_plt_clk_3: %d\n",
> +				ret_val);
>   			/*
>   			 * Fall back to bit clock usage for -ENOENT (clock not
>   			 * available likely due to missing dependencies), bail
> 

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Applied "ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val" to the asoc tree
  2018-05-02 14:29 [PATCH] ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val Colin King
  2018-05-02 15:20 ` [alsa-devel] " Pierre-Louis Bossart
@ 2018-05-03  1:32 ` Mark Brown
  1 sibling, 0 replies; 3+ messages in thread
From: Mark Brown @ 2018-05-03  1:32 UTC (permalink / raw)
  To: Colin Ian King
  Cc: Pierre-Louis Bossart, Mark Brown, Liam Girdwood, Mark Brown,
	Jaroslav Kysela, Takashi Iwai, Andy Shevchenko, alsa-devel,
	kernel-janitors, linux-kernel, alsa-devel

The patch

   ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val

has been applied to the asoc tree at

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

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

>From de5afce2a22ef7f92e9e8583a3bdbc10e448cddf Mon Sep 17 00:00:00 2001
From: Colin Ian King <colin.king@canonical.com>
Date: Wed, 2 May 2018 15:29:45 +0100
Subject: [PATCH] ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val

Currently, the check that ret_val is not -ENOENT is always true and
the quirk bit BYT_RY5651_MCLK_EN is never being cleared because ret_val
is always zero at this point from a previous assignment earlier on.
I believe that ret_val should actually be assigned to the return from
devm_clk_get() as this can return -ENOENT (from a deeper call to
clk_get_sys) and that was the original intention to check this.

Detected by CoverityScan, CID#1460228 ("Logically dead code")

Fixes: 02c0a3b3047f ("ASoC: Intel: bytcr_rt5651: add MCLK, quirks and cleanups")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/intel/boards/bytcr_rt5651.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c
index 1b1997f1d60c..bf59c7caf1d9 100644
--- a/sound/soc/intel/boards/bytcr_rt5651.c
+++ b/sound/soc/intel/boards/bytcr_rt5651.c
@@ -856,9 +856,10 @@ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
 	if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
 		priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
 		if (IS_ERR(priv->mclk)) {
+			ret_val = PTR_ERR(priv->mclk);
 			dev_err(&pdev->dev,
-				"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
-				PTR_ERR(priv->mclk));
+				"Failed to get MCLK from pmc_plt_clk_3: %d\n",
+				ret_val);
 			/*
 			 * Fall back to bit clock usage for -ENOENT (clock not
 			 * available likely due to missing dependencies), bail
-- 
2.17.0

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2018-05-03  1:33 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2018-05-02 14:29 [PATCH] ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val Colin King
2018-05-02 15:20 ` [alsa-devel] " Pierre-Louis Bossart
2018-05-03  1:32 ` Applied "ASoC: Intel: bytcr_rt565: fix missing assignment to ret_val" to the asoc tree Mark Brown

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