linux-kernel - Re: [PATCH v10 1/1] serial: core: Start managing serial controllers to enable runtime PM

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Date:   Tue, 9 May 2023 09:57:58 +0300
From:   Tony Lindgren <tony@...mide.com>
To:     kernel test robot <lkp@...el.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>, llvm@...ts.linux.dev,
        oe-kbuild-all@...ts.linux.dev,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Dhruva Gole <d-gole@...com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Johan Hovold <johan@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org
Subject: Re: [PATCH v10 1/1] serial: core: Start managing serial controllers
 to enable runtime PM

* kernel test robot <lkp@...el.com> [230508 23:13]:
> >> drivers/tty/serial/serial_base_bus.c:97:13: warning: variable 'id' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
>            } else if (type == &serial_port_type) {
>                       ^~~~~~~~~~~~~~~~~~~~~~~~~
>    drivers/tty/serial/serial_base_bus.c:102:77: note: uninitialized use occurs here
>            err = dev_set_name(&sbd->dev, "%s.%s.%d", type->name, dev_name(port->dev), id);
>                                                                                       ^~
>    drivers/tty/serial/serial_base_bus.c:97:9: note: remove the 'if' if its condition is always true
>            } else if (type == &serial_port_type) {
>                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    drivers/tty/serial/serial_base_bus.c:83:13: note: initialize the variable 'id' to silence this warning
>            int err, id;
>                       ^
>                        = 0
>    1 warning generated.

Thanks I'll just add else goto err_free_dev for unknown types.

Regards,

Tony