[PATCH v2 1/2] serial: sifive: lock port in startup()/shutdown() callbacks

[Greg KH]

On Sun, Mar 30, 2025 at 10:16:10AM +0900, Ryo Takakura wrote:
> startup()/shutdown() callbacks access SIFIVE_SERIAL_IE_OFFS.
> The register is also accessed from write() callback.
> 
> If console were printing and startup()/shutdown() callback
> gets called, its access to the register could be overwritten.
> 
> Add port->lock to startup()/shutdown() callbacks to make sure
> their access to SIFIVE_SERIAL_IE_OFFS is synchronized against
> write() callback.
> 
> Signed-off-by: Ryo Takakura <ryotkkr98 at gmail.com>
> Cc: stable at vger.kernel.org
> ---
> 
> Hi,
> 
> I'm sorry that I wasn't aware of how Cc stable should be done. 
> 
> I added Cc for stable but please tell me if this patch should be
> resent or if there is any that is missing.

Please resend a v3.

thanks,

greg k-h