Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Tue, 18 Apr 2023 12:41:23 +0300
From:   Tony Lindgren <tony@atomide.com>
To:     Ilpo =?utf-8?B?SsOkcnZpbmVu?= <ilpo.jarvinen@linux.intel.com>
Cc:     Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jiri Slaby <jirislaby@kernel.org>,
        Johan Hovold <johan@kernel.org>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        linux-omap@vger.kernel.org,
        linux-serial <linux-serial@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] serial: 8250: Clear port->pm on port specific driver
 unbind
Message-ID: <20230418094123.GA14287@atomide.com>
References: <20230413070342.36155-1-tony@atomide.com>
 <ZDgoi2mFYYqswAhu@smile.fi.intel.com>
 <20230414054726.GE36234@atomide.com>
 <63b333cb-13c7-db58-9cf-697aa1c4c48a@linux.intel.com>
 <20230414094035.GF36234@atomide.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230414094035.GF36234@atomide.com>
Precedence: bulk

* Tony Lindgren <tony@atomide.com> [230414 09:40]:
> I'm now wondering still if we should clear all the conditional hardware
> specific functions too in addition to port->pm that get set in
> serial8250_register_8250_port(). Maybe best done in a separate patch
> as needed.. Any suggestions?

Well we can't do memset on the port for sure at this point.. But what
we can do is call serial8250_set_defaults() instead of clearing just
port->pm. This will set the port back to serial8250 default functions,
and will set port->pm too.

I'll send v2 patch after some more testing.

Regards,

Tony