Messages in this thread Patch in this message | | | From | Yauhen Kharuzhy <> | Subject | [PATCH] i2c-s3c2410: Decrease delay after end of transaction | Date | Tue, 20 Apr 2010 13:53:19 +0300 |
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msleep(1) which has been used for delay after issuing a STOP condition to bus cause very big delay (min 1/HZ s). This is makes bulk register update in I2C devices (for instance video camera) very slowly.
Seems that this delay can be safely decreased to few tens of microseconds.
Signed-off-by: Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com> --- drivers/i2c/busses/i2c-s3c2410.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index d27072b..de20a4e 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -521,7 +521,7 @@ static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c, /* ensure the stop has been through the bus */ - msleep(1); + udelay(50); out: return ret; -- 1.6.6.1
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