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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-09-18 10:09:44 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-09-18 10:09:44 -0400
commit9f072b7b2260a588bfb5fb43418c3358104e7c13 (patch)
tree055f1082093bb63a34c7bfe43c845567685d4675 /sound/soc/s3c24xx/s3c-i2s-v2.c
parentb1cd6b9ec7c749ddfad628c8c12659591ae195e6 (diff)
parent0c31cf3e4af79ea18bbd365b07ef0de207673894 (diff)
Merge branch 'for-2.6.32' into for-2.6.33
Diffstat (limited to 'sound/soc/s3c24xx/s3c-i2s-v2.c')
-rw-r--r--sound/soc/s3c24xx/s3c-i2s-v2.c16
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 819c3c086d69..11c45a37c631 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)
230 pr_debug("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic); 230 pr_debug("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
231} 231}
232 232
233#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
234
233/* 235/*
234 * Wait for the LR signal to allow synchronisation to the L/R clock 236 * Wait for the LR signal to allow synchronisation to the L/R clock
235 * from the codec. May only be needed for slave mode. 237 * 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)
237static int s3c2412_snd_lrsync(struct s3c_i2sv2_info *i2s) 239static int s3c2412_snd_lrsync(struct s3c_i2sv2_info *i2s)
238{ 240{
239 u32 iiscon; 241 u32 iiscon;
240 unsigned long timeout = jiffies + msecs_to_jiffies(5); 242 unsigned long loops = msecs_to_loops(5);
241 243
242 pr_debug("Entered %s\n", __func__); 244 pr_debug("Entered %s\n", __func__);
243 245
244 while (1) { 246 while (--loops) {
245 iiscon = readl(i2s->regs + S3C2412_IISCON); 247 iiscon = readl(i2s->regs + S3C2412_IISCON);
246 if (iiscon & S3C2412_IISCON_LRINDEX) 248 if (iiscon & S3C2412_IISCON_LRINDEX)
247 break; 249 break;
248 250
249 if (timeout < jiffies) { 251 cpu_relax();
250 printk(KERN_ERR "%s: timeout\n", __func__); 252 }
251 return -ETIMEDOUT; 253
252 } 254 if (!loops) {
255 printk(KERN_ERR "%s: timeout\n", __func__);
256 return -ETIMEDOUT;
253 } 257 }
254 258
255 return 0; 259 return 0;