diff options
| author |   Krzysztof Helt <krzysztof.h1 at wp.pl> | 2007-09-11 00:40:42 +0200 |
|---|---|---|
| committer |   Jaroslav Kysela <perex@perex.cz> | 2007-10-16 16:49:29 +0200 |
| commit | 23d4635ed336c7dadb3590ee7d275ac612f06ebf (patch) | |
| tree | e5ec9aa22fb992fe51fa059f14ab581cc8503f66 /sound/isa | |
| parent | [ALSA] Kill useless volatile in pcm.h (diff) | |
| download | linux-dev-23d4635ed336c7dadb3590ee7d275ac612f06ebf.tar.xz linux-dev-23d4635ed336c7dadb3590ee7d275ac612f06ebf.zip | |
[ALSA] cs4231-lib: improved waiting after mce_down
This patch replaces long msleeps in waiting loops
with schedule_timeout() calls.
Signed-off-by: Krzysztof Helt <krzysztof.h1 at wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/isa')
| -rw-r--r-- | sound/isa/cs423x/cs4231_lib.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/sound/isa/cs423x/cs4231_lib.c b/sound/isa/cs423x/cs4231_lib.c index c0ffb20da996..e73554feccd5 100644 --- a/sound/isa/cs423x/cs4231_lib.c +++ b/sound/isa/cs423x/cs4231_lib.c @@ -343,26 +343,29 @@ void snd_cs4231_mce_down(struct snd_cs4231 *chip) snd_printdd("(1) jiffies = %lu\n", jiffies); - /* in 10 ms increments, check condition, up to 250 ms */ - timeout = 25; - while (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) { - if (--timeout < 0) { - snd_printk("mce_down - auto calibration time out (2)\n"); + /* check condition up to 250 ms */ + timeout = msecs_to_jiffies(250); + while (snd_cs4231_in(chip, CS4231_TEST_INIT) & + CS4231_CALIB_IN_PROGRESS) { + + if (timeout <= 0) { + snd_printk(KERN_ERR "mce_down - " + "auto calibration time out (2)\n"); return; } - msleep(10); + timeout = schedule_timeout(timeout); } snd_printdd("(2) jiffies = %lu\n", jiffies); - /* in 10 ms increments, check condition, up to 100 ms */ - timeout = 10; + /* check condition up to 100 ms */ + timeout = msecs_to_jiffies(100); while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) { - if (--timeout < 0) { + if (timeout <= 0) { snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n"); return; } - msleep(10); + timeout = schedule_timeout(timeout); } snd_printdd("(3) jiffies = %lu\n", jiffies); |