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Commit 37de03ea authored by Mark Brown's avatar Mark Brown Committed by Ben Dooks
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i2c: i2c-s3c2410: Add a cpu_relax() to busy wait for bus idle 



Be a bit more friendly.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent a36bfddd

drivers/i2c/busses/i2c-s3c2410.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -534,6 +534,7 @@ static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c, 




	/* first, try busy waiting briefly */

	/* first, try busy waiting briefly */

	do {

	do {

		cpu_relax();

		iicstat = readl(i2c->regs + S3C2410_IICSTAT);

		iicstat = readl(i2c->regs + S3C2410_IICSTAT);

	} while ((iicstat & S3C2410_IICSTAT_START) && --spins);

	} while ((iicstat & S3C2410_IICSTAT_START) && --spins);