Re: [PATCH] i2c: mark HostNotify target address as used

[Sergei Shtylyov]

On 7/10/24 11:55 AM, Wolfram Sang wrote:

> I2C core handles the local target for receiving HostNotify alerts. There
> is no separate driver bound to that address. That means userspace can
> access it if desired, leading to further complications if controllers
> are not capable of reading their own local target. Bind the local target
> to the dummy driver so it will marked as "handled by the kernel" if the
                                ^ be? :-)

> HostNotify feature is used. That protects aginst userspace access and
> prevents other drivers binding to it.
> 
> Fixes: 2a71593da34d ("i2c: smbus: add core function handling SMBus host-notify")
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
[...]

MBR, Sergey