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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-12-09 20:55:03 +0800 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2011-12-18 11:44:26 +0000 |
| commit | 37de03ea1246c8280f6c8c6f61ea98973e9b9448 (patch) | |
| tree | 12df4d31c02cc4630281db06c7c6874741289378 /drivers/i2c/busses/i2c-s3c2410.c | |
| parent | a36bfddd65b58dd8c8364dba919c04922e04f2f5 (diff) | |
| download | blackbird-op-linux-37de03ea1246c8280f6c8c6f61ea98973e9b9448.tar.gz blackbird-op-linux-37de03ea1246c8280f6c8c6f61ea98973e9b9448.zip | |
i2c: i2c-s3c2410: Add a cpu_relax() to busy wait for bus idle
Be a bit more friendly.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-s3c2410.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-s3c2410.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 2754cef86a06..37b2de106808 100644 --- 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); |
