linux-kernel - Re: [PATCH v2 1/3] serial: 8250: Handle UART without interrupt on TEMT using em485

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Date:   Fri, 1 Oct 2021 14:30:33 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Eric Tremblay <etremblay@...tech-controls.com>
Cc:     kernel test robot <lkp@...el.com>, gregkh@...uxfoundation.org,
        kbuild-all@...ts.01.org, jslaby@...e.com,
        andriy.shevchenko@...ux.intel.com, matwey.kornilov@...il.com,
        giulio.benetti@...ronovasrl.com, lukas@...ner.de,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        christoph.muellner@...obroma-systems.com, heiko@...ech.de
Subject: Re: [PATCH v2 1/3] serial: 8250: Handle UART without interrupt on
 TEMT using em485

Hello,

On Fri, Feb 05, 2021 at 05:36:44AM +0800, kernel test robot wrote:
> Hi Eric,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on tty/tty-testing]
> [also build test ERROR on usb/usb-testing v5.11-rc6 next-20210125]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Eric-Tremblay/Handle-UART-without-interrupt-on-TEMT-using-em485/20210205-002255
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
> config: ia64-randconfig-r032-20210204 (attached as .config)
> compiler: ia64-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://github.com/0day-ci/linux/commit/070c956e2d260c56b13f43b7d092b4a20664248c
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Eric-Tremblay/Handle-UART-without-interrupt-on-TEMT-using-em485/20210205-002255
>         git checkout 070c956e2d260c56b13f43b7d092b4a20664248c
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>, old ones prefixed by <<):
> 
> >> ERROR: modpost: "uart_get_byte_size" [drivers/tty/serial/8250/8250_base.ko] undefined!

FTR: This is a missing EXPORT_SYMBOL_GPL for uart_get_byte_size().

Best regards
Uwe


-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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