[PATCH -next] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup()

[PATCH -next] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup()

[Yang Yingliang]

After calling clk_prepare_enable(), clk_disable_unprepare() need
be called when calling clk_set_rate() failed.

Fixes: 0bf750f4cbe1 ("ASoC: hisilicon: Add hi6210 i2s audio driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 sound/soc/hisilicon/hi6210-i2s.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/sound/soc/hisilicon/hi6210-i2s.c b/sound/soc/hisilicon/hi6210-i2s.c
index 907f5f1f7b44..ff05b9779e4b 100644
--- a/sound/soc/hisilicon/hi6210-i2s.c
+++ b/sound/soc/hisilicon/hi6210-i2s.c
@@ -102,18 +102,15 @@ static int hi6210_i2s_startup(struct snd_pcm_substream *substream,
 
 	for (n = 0; n < i2s->clocks; n++) {
 		ret = clk_prepare_enable(i2s->clk[n]);
-		if (ret) {
-			while (n--)
-				clk_disable_unprepare(i2s->clk[n]);
-			return ret;
-		}
+		if (ret)
+			goto err_unprepare_clk;
 	}
 
 	ret = clk_set_rate(i2s->clk[CLK_I2S_BASE], 49152000);
 	if (ret) {
 		dev_err(i2s->dev, "%s: setting 49.152MHz base rate failed %d\n",
 			__func__, ret);
-		return ret;
+		goto err_unprepare_clk;
 	}
 
 	/* enable clock before frequency division */
@@ -165,6 +162,11 @@ static int hi6210_i2s_startup(struct snd_pcm_substream *substream,
 	hi6210_write_reg(i2s, HII2S_SW_RST_N, val);
 
 	return 0;
+
+err_unprepare_clk:
+	while (n--)
+		clk_disable_unprepare(i2s->clk[n]);
+	return ret;
 }
 
 static void hi6210_i2s_shutdown(struct snd_pcm_substream *substream,
-- 
2.25.1

Re: [PATCH] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup()

[Mark Brown]

On Tue, 18 May 2021 12:45:14 +0800, Yang Yingliang wrote:
> After calling clk_prepare_enable(), clk_disable_unprepare() need
> be called when calling clk_set_rate() failed.

Applied to

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

Thanks!

[1/1] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup()
      commit: 375904e3931955fcf0a847f029b2492a117efc43

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