On Sun, Jun 06, 2021 at 03:55:55PM +0200, Heiner Kallweit wrote:

As explained in [0] currently we may leave SMBHSTSTS_INUSE_STS set,
thus potentially breaking ACPI/BIOS usage of the SMBUS device.

Seems patch [0] needs a little bit more of review effort, therefore
I'd suggest to apply a part of it as quick win. Just clearing
SMBHSTSTS_INUSE_STS when leaving i801_access() should fix the
referenced issue and leaves more time for discussing a more
sophisticated locking handling.

[0] https://www.spinics.net/lists/linux-i2c/msg51558.html

Fixes: 01590f361e94 ("i2c: i801: Instantiate SPD EEPROMs automatically")
Cc: stable@vger.kernel.org
Suggested-by: Hector Martin <redacted>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>

Applied to for-current, thanks!