2014-10-29 09:46:14

by Jianqun Xu

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Subject: [PATCH] ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_rxctrl

---

We can get into an infinite loop if the I2S_CLR register fails to
clear due to a missing break statement, so add that.

Signed-off-by: Jianqun <[email protected]>
---
sound/soc/rockchip/rockchip_i2s.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index f373e37..c74ba37 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -154,8 +154,10 @@ static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
while (val) {
regmap_read(i2s->regmap, I2S_CLR, &val);
retry--;
- if (!retry)
+ if (!retry) {
dev_warn(i2s->dev, "fail to clear\n");
+ break;
+ }
}
}
}
--
1.9.1

2014-10-29 10:18:22

by Mark Brown

[permalink] [raw]

Subject: Re: [PATCH] ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_rxctrl

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On Wed, Oct 29, 2014 at 05:45:51PM +0800, Jianqun wrote:
> We can get into an infinite loop if the I2S_CLR register fails to
> clear due to a missing break statement, so add that.

Applied, thanks.

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