i2c: piix4: Use usleep_range()

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The piix4 i2c driver is extremely slow. Replacing msleep()
with usleep_range() increases its speed substantially.
Use sleep ranges similar to those used in the i2c-801 driver
to keep things simple.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Guenter Roeck 2018-02-26 12:46:52 -08:00 • committed by Wolfram Sang

parent be5b928038

commit 0e89b2fec7

1 changed files with 3 additions and 3 deletions

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drivers/i2c/busses/i2c-piix4.c

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