From: "Li, Zhen-Hua" <zhen-hual@hp.com>
To: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.de>,
<alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>
Cc: "Li, Zhen-Hua" <zhen-hual@hp.com>
Subject: [PATCH 1/1] driver/snd: es18xx driver should use udelay error
Date: Mon, 14 Apr 2014 17:43:08 +0800 [thread overview]
Message-ID: <1397468588-18559-1-git-send-email-zhen-hual@hp.com> (raw)
From: "Li, Zhen-Hua" <zhen-hual@hp.com>
udelay with more than 20000 may cause __bad_udelay.
Use mdelay for instead.
Signed-off-by: Li, Zhen-Hua <zhen-hual@hp.com>
---
sound/isa/es18xx.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/sound/isa/es18xx.c b/sound/isa/es18xx.c
index 1c16830..8d3a3b6 100644
--- a/sound/isa/es18xx.c
+++ b/sound/isa/es18xx.c
@@ -520,7 +520,7 @@ static int snd_es18xx_playback1_trigger(struct snd_es18xx *chip,
snd_es18xx_mixer_write(chip, 0x78, 0x93);
#ifdef AVOID_POPS
/* Avoid pops */
- udelay(100000);
+ mudelay(100);
if (chip->caps & ES18XX_PCM2)
/* Restore Audio 2 volume */
snd_es18xx_mixer_write(chip, 0x7C, chip->audio2_vol);
@@ -537,7 +537,7 @@ static int snd_es18xx_playback1_trigger(struct snd_es18xx *chip,
/* Stop DMA */
snd_es18xx_mixer_write(chip, 0x78, 0x00);
#ifdef AVOID_POPS
- udelay(25000);
+ mdelay(25);
if (chip->caps & ES18XX_PCM2)
/* Set Audio 2 volume to 0 */
snd_es18xx_mixer_write(chip, 0x7C, 0);
@@ -596,7 +596,7 @@ static int snd_es18xx_capture_prepare(struct snd_pcm_substream *substream)
snd_es18xx_write(chip, 0xA5, count >> 8);
#ifdef AVOID_POPS
- udelay(100000);
+ mdelay(100);
#endif
/* Set format */
@@ -691,7 +691,7 @@ static int snd_es18xx_playback2_trigger(struct snd_es18xx *chip,
snd_es18xx_write(chip, 0xB8, 0x05);
#ifdef AVOID_POPS
/* Avoid pops */
- udelay(100000);
+ mdelay(100);
/* Enable Audio 1 */
snd_es18xx_dsp_command(chip, 0xD1);
#endif
@@ -705,7 +705,7 @@ static int snd_es18xx_playback2_trigger(struct snd_es18xx *chip,
snd_es18xx_write(chip, 0xB8, 0x00);
#ifdef AVOID_POPS
/* Avoid pops */
- udelay(25000);
+ mdelay(25);
/* Disable Audio 1 */
snd_es18xx_dsp_command(chip, 0xD3);
#endif
--
1.7.10.4
next reply other threads:[~2014-04-14 9:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-14 9:43 Li, Zhen-Hua [this message]
2014-04-14 12:00 ` Clemens Ladisch
2014-04-14 12:30 ` Takashi Iwai
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