From: Jianqun <jay.xu@rock-chips.com> To: heiko@sntech.de, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.de, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org Cc: huangtao@rock-chips.com, cf@rock-chips.com, Jianqun <jay.xu@rock-chips.com> Subject: [PATCH] ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_rxctrl Date: Wed, 29 Oct 2014 17:45:51 +0800 [thread overview] Message-ID: <1414575951-18015-1-git-send-email-jay.xu@rock-chips.com> (raw) 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 <jay.xu@rock-chips.com> --- 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
WARNING: multiple messages have this Message-ID (diff)
From: jay.xu@rock-chips.com (Jianqun) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_rxctrl Date: Wed, 29 Oct 2014 17:45:51 +0800 [thread overview] Message-ID: <1414575951-18015-1-git-send-email-jay.xu@rock-chips.com> (raw) 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 <jay.xu@rock-chips.com> --- 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
next reply other threads:[~2014-10-29 9:46 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-10-29 9:45 Jianqun [this message] 2014-10-29 9:45 ` [PATCH] ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_rxctrl Jianqun 2014-10-29 10:17 ` Mark Brown 2014-10-29 10:17 ` Mark Brown
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1414575951-18015-1-git-send-email-jay.xu@rock-chips.com \ --to=jay.xu@rock-chips.com \ --cc=alsa-devel@alsa-project.org \ --cc=broonie@kernel.org \ --cc=cf@rock-chips.com \ --cc=heiko@sntech.de \ --cc=huangtao@rock-chips.com \ --cc=lgirdwood@gmail.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-rockchip@lists.infradead.org \ --cc=perex@perex.cz \ --cc=tiwai@suse.de \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.