[PATCH v2 0/2] i2c: imx: fix SMBus block-read of 0 locking the bus

[Oleksij Rempel]

On Mon, May 25, 2026 at 06:43:14PM +0200, Vincent Jardin wrote:
> i2c-imx rejects a SMBus Block Read byte count of 0 (valid per SMBus 3.1
> 6.5.7) and it returns without a NACK+STOP, leaving the target
> holding SDA so the bus is stuck until a power cycle occur.
> 
> The same bug is occuring with two independently introduced spots, so the
> fix is two patches with their respective Fixes: tags and backport ranges:
> 
>   1/2  atomic/polling path       Fixes: 8e8782c71595   v3.16+
>   2/2  IRQ-driven state machine  Fixes: 5f5c2d4579ca   v6.13+
> 
> Signed-off-by: Vincent Jardin <vjardin at free.fr>

Acked-by: Oleksij Rempel <o.rempel at pengutronix.de>

Thank you!

Best Regards,
Oleksij
- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |