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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 19:54:53 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 20:01:40 (GMT) |
commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /sound/soc/s3c24xx/s3c-i2s-v2.c | |
parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
download | linux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz |
Merge branch 'master' into for-linus
Diffstat (limited to 'sound/soc/s3c24xx/s3c-i2s-v2.c')
-rw-r--r-- | sound/soc/s3c24xx/s3c-i2s-v2.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/sound/soc/s3c24xx/s3c-i2s-v2.c b/sound/soc/s3c24xx/s3c-i2s-v2.c index aa7af0b..9bc4aa3 100644 --- a/sound/soc/s3c24xx/s3c-i2s-v2.c +++ b/sound/soc/s3c24xx/s3c-i2s-v2.c @@ -230,6 +230,8 @@ static void s3c2412_snd_rxctrl(struct s3c_i2sv2_info *i2s, int on) pr_debug("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic); } +#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t) + /* * Wait for the LR signal to allow synchronisation to the L/R clock * from the codec. May only be needed for slave mode. @@ -237,19 +239,21 @@ static void s3c2412_snd_rxctrl(struct s3c_i2sv2_info *i2s, int on) static int s3c2412_snd_lrsync(struct s3c_i2sv2_info *i2s) { u32 iiscon; - unsigned long timeout = jiffies + msecs_to_jiffies(5); + unsigned long loops = msecs_to_loops(5); pr_debug("Entered %s\n", __func__); - while (1) { + while (--loops) { iiscon = readl(i2s->regs + S3C2412_IISCON); if (iiscon & S3C2412_IISCON_LRINDEX) break; - if (timeout < jiffies) { - printk(KERN_ERR "%s: timeout\n", __func__); - return -ETIMEDOUT; - } + cpu_relax(); + } + + if (!loops) { + printk(KERN_ERR "%s: timeout\n", __func__); + return -ETIMEDOUT; } return 0; |