[PATCH 4.19 185/421] ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup()
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-19 16:17:54
Also in:
lkml
Subsystem:
sound, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Linus Torvalds
From: Yang Yingliang <redacted>
[ Upstream commit 375904e3931955fcf0a847f029b2492a117efc43 ]
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 <redacted>
Signed-off-by: Yang Yingliang <redacted>
Link: https://lore.kernel.org/r/20210518044514.607010-1-yangyingliang@huawei.com (local)
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 53344a3b7a60..864718ef874f 100644
--- a/sound/soc/hisilicon/hi6210-i2s.c
+++ b/sound/soc/hisilicon/hi6210-i2s.c@@ -110,18 +110,15 @@ 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 */
@@ -173,6 +170,11 @@ 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,
--
2.30.2