viafb: reduce I2C timeout and delay

This patch reduces the value for I2C timeout and udelay.
The udelay was reduced to 10 (old: 40) which is still very high as for
standard-mode I2C even 5 should work. This gives a speedup of factor 4
when talking to I2C devices.
The timeout was reduced to 2 (old: 20) which is taken from the radeon
driver so it should work as well. This gives a speedup of factor 10 when
detecting that there is no I2C device we want to talk to.
This causes a huge improvement of device initialization time.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Cc: Joseph Chan <JosephChan@via.com.tw>

diff --git a/drivers/video/via/via_i2c.c b/drivers/video/via/via_i2c.c
index 021112e279dea051ed07a5537f79d89142c5a4dd..3844b558b7bd2456d7650fa8275d70f5d38ca8e9 100644 (file)
--- a/drivers/video/via/via_i2c.c
+++ b/drivers/video/via/via_i2c.c
@@ -202,8 +202,8 @@ static int create_i2c_bus(struct i2c_adapter *adapter,
        algo->setscl = via_i2c_setscl;
        algo->getsda = via_i2c_getsda;
        algo->getscl = via_i2c_getscl;
-       algo->udelay = 40;
-       algo->timeout = 20;
+       algo->udelay = 10;
+       algo->timeout = 2;
        algo->data = adap_cfg;
 
        sprintf(adapter->name, "viafb i2c io_port idx 0x%02x",