On Wed, Jul 26, 2023 at 03:00:01PM +0700, Tam Nguyen wrote: > In the I2C_FUNC_SMBUS_BLOCK_DATA case, the invalid length byte value > (outside of 1-32) of the SMBus block data response from the Slave device > is not correctly handled by the I2C Designware driver. > > In case IC_EMPTYFIFO_HOLD_MASTER_EN==1, which cannot be detected > from the registers, the Master can be disabled only if the STOP bit > is set. Without STOP bit set, the Master remains active, holding the bus > until receiving a block data response length. This hangs the bus and > is unrecoverable. > > Avoid this by issuing another dump read to reach the stop condition when > an invalid length byte is received. > > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Tam Nguyen <tamnguyenchi@xxxxxxxxxxxxxxxxxxxxxx> Applied to for-current, thanks!
Attachment:
signature.asc
Description: PGP signature
