linux-kernel - Re: [PATCH v2 2/2] earlycon: Use a pointer table to fix __earlycon

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Date:   Fri, 23 Mar 2018 10:54:14 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Daniel Kurtz <djkurtz@...omium.org>
Cc:     kbuild-all@...org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Guenter Roeck <groeck@...omium.org>, adurbin@...omium.org,
        linux-kernel@...r.kernel.org, Daniel Kurtz <djkurtz@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Jiri Slaby <jslaby@...e.com>, Arnd Bergmann <arnd@...db.de>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE" 
        <devicetree@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        "open list:GENERIC INCLUDE/ASM HEADER FILES" 
        <linux-arch@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] earlycon: Use a pointer table to fix
 __earlycon_table stride

Hi Daniel,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on v4.16-rc6 next-20180322]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Daniel-Kurtz/serial-sh-sci-Remove-__initdata-attribute-for-struct-port_cfg/20180323-085004
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

>> drivers/tty/serial/sh-sci.c:3293:81: error: early_driver causes a section type conflict with __UNIQUE_ID___earlycon_hscif44
    early_platform_init_buffer("earlyprintk", &sci_driver,
                                                                                    ^           
   drivers/tty/serial/sh-sci.c:3349:33: note: '__UNIQUE_ID___earlycon_hscif44' was declared here
    OF_EARLYCON_DECLARE(hscif, "renesas,hscif", hscif_early_console_setup);
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +3293 drivers/tty/serial/sh-sci.c

^1da177e drivers/serial/sh-sci.c     Linus Torvalds 2005-04-16  3291  
7b6fd3bf drivers/serial/sh-sci.c     Magnus Damm    2009-12-14  3292  #ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
7b6fd3bf drivers/serial/sh-sci.c     Magnus Damm    2009-12-14 @3293  early_platform_init_buffer("earlyprintk", &sci_driver,
7b6fd3bf drivers/serial/sh-sci.c     Magnus Damm    2009-12-14  3294  			   early_serial_buf, ARRAY_SIZE(early_serial_buf));
7b6fd3bf drivers/serial/sh-sci.c     Magnus Damm    2009-12-14  3295  #endif
0b0cced1 drivers/tty/serial/sh-sci.c Yoshinori Sato 2015-12-24  3296  #ifdef CONFIG_SERIAL_SH_SCI_EARLYCON
2897809d drivers/tty/serial/sh-sci.c Daniel Kurtz   2018-03-20  3297  static struct plat_sci_port port_cfg;
0b0cced1 drivers/tty/serial/sh-sci.c Yoshinori Sato 2015-12-24  3298  

:::::: The code at line 3293 was first introduced by commit
:::::: 7b6fd3bf82c4901f6ba0101ba71a5c507c24f9cf sh-sci: Extend sh-sci driver with early console V2

:::::: TO: Magnus Damm <damm@...nsource.se>
:::::: CC: Paul Mundt <lethal@...ux-sh.org>

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