linux-kernel - Re: [PATCH] rtl8712: add a check for the status of register

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Date:   Wed, 26 Dec 2018 10:29:00 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Kangjie Lu <kjlu@....edu>
Cc:     kbuild-all@...org, kjlu@....edu, pakki001@....edu,
        Larry Finger <Larry.Finger@...inger.net>,
        Florian Schilhabel <florian.c.schilhabel@...glemail.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        André Lehmann <lenneman@....de>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtl8712: add a check for the status of register_netdev

Hi Kangjie,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on staging/staging-testing]
[also build test ERROR on v4.20 next-20181224]
[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/Kangjie-Lu/rtl8712-add-a-check-for-the-status-of-register_netdev/20181226-094828
config: nds32-allmodconfig (attached as .config)
compiler: nds32le-linux-gcc (GCC) 6.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=6.4.0 make.cross ARCH=nds32 

All errors (new ones prefixed by >>):

   In file included from include/linux/usb/ch9.h:36:0,
                    from include/linux/usb.h:6,
                    from drivers/staging//rtl8712/hal_init.c:19:
   drivers/staging//rtl8712/hal_init.c: In function 'rtl871x_load_fw_cb':
>> drivers/staging//rtl8712/hal_init.c:49:12: error: 'udev' undeclared (first use in this function)
      dev_err(&udev->dev, "r8712u: Registering netdev failed\n");
               ^
   include/linux/device.h:1453:11: note: in definition of macro 'dev_err'
     _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
              ^~~
   drivers/staging//rtl8712/hal_init.c:49:12: note: each undeclared identifier is reported only once for each function it appears in
      dev_err(&udev->dev, "r8712u: Registering netdev failed\n");
               ^
   include/linux/device.h:1453:11: note: in definition of macro 'dev_err'
     _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
              ^~~

vim +/udev +49 drivers/staging//rtl8712/hal_init.c

    18	
  > 19	#include <linux/usb.h>
    20	#include <linux/device.h>
    21	#include <linux/usb/ch9.h>
    22	#include <linux/firmware.h>
    23	#include <linux/module.h>
    24	
    25	#include "osdep_service.h"
    26	#include "drv_types.h"
    27	#include "usb_osintf.h"
    28	
    29	#define FWBUFF_ALIGN_SZ 512
    30	#define MAX_DUMP_FWSZ	49152 /*default = 49152 (48k)*/
    31	
    32	static void rtl871x_load_fw_cb(const struct firmware *firmware, void *context)
    33	{
    34		struct _adapter *padapter = context;
    35	
    36		complete(&padapter->rtl8712_fw_ready);
    37		if (!firmware) {
    38			struct usb_device *udev = padapter->dvobjpriv.pusbdev;
    39			struct usb_interface *pusb_intf = padapter->pusb_intf;
    40	
    41			dev_err(&udev->dev, "r8712u: Firmware request failed\n");
    42			usb_put_dev(udev);
    43			usb_set_intfdata(pusb_intf, NULL);
    44			return;
    45		}
    46		padapter->fw = firmware;
    47		/* firmware available - start netdev */
    48		if (register_netdev(padapter->pnetdev))
  > 49			dev_err(&udev->dev, "r8712u: Registering netdev failed\n");
    50	}
    51	

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