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i2c: i2c-s3c2410: Add a cpu_relax() to busy wait for bus idle
[pandora-kernel.git]
/
drivers
/
i2c
/
busses
/
i2c-s3c2410.c
diff --git
a/drivers/i2c/busses/i2c-s3c2410.c
b/drivers/i2c/busses/i2c-s3c2410.c
index
2754cef
..
37b2de1
100644
(file)
--- a/
drivers/i2c/busses/i2c-s3c2410.c
+++ b/
drivers/i2c/busses/i2c-s3c2410.c
@@
-534,6
+534,7
@@
static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c,
/* first, try busy waiting briefly */
do {
+ cpu_relax();
iicstat = readl(i2c->regs + S3C2410_IICSTAT);
} while ((iicstat & S3C2410_IICSTAT_START) && --spins);