Commits
Ricardo Ribalda Delgado committed 88fa2dfb075
i2c: piix4: Disable completely the IMC during SMBUS_BLOCK_DATA SMBUS_BLOCK_DATA transactions might fail due to a race condition with the IMC (Integrated Micro Controller), even when the IMC semaphore is used. This bug has been reported and confirmed by AMD, who suggested as a solution an IMC firmware upgrade (obtained via BIOS update) and disabling the IMC during SMBUS_BLOCK_DATA transactions. Even without the IMC upgrade, the SMBUS is much more stable with this patch. Tested on a Bettong-alike board. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>