linux-kernel - Re: [PATCH v2] net: phy: leds: Don't make our own link speed names

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Message-ID: <201811091555.ULO5Dq9u%fengguang.wu@intel.com>
Date:   Fri, 9 Nov 2018 15:44:00 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Kyle Roeschley <kyle.roeschley@...com>
Cc:     kbuild-all@...org, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Kyle Roeschley <kyle.roeschley@...com>
Subject: Re: [PATCH v2] net: phy: leds: Don't make our own link speed names

Hi Kyle,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on v4.20-rc1 next-20181109]
[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/Kyle-Roeschley/net-phy-leds-Don-t-make-our-own-link-speed-names/20181109-143344
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 8.1.0
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=8.1.0 make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

   drivers/net//phy/phy_led_triggers.c: In function 'phy_led_trigger_register':
>> drivers/net//phy/phy_led_triggers.c:82:9: warning: passing argument 4 of 'phy_led_trigger_format_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
            phy_speed_to_str(speed));
            ^~~~~~~~~~~~~~~~~~~~~~~
   drivers/net//phy/phy_led_triggers.c:70:25: note: expected 'char *' but argument is of type 'const char *'
         size_t size, char *suffix)
                      ~~~~~~^~~~~~

vim +82 drivers/net//phy/phy_led_triggers.c

    75	
    76	static int phy_led_trigger_register(struct phy_device *phy,
    77					    struct phy_led_trigger *plt,
    78					    unsigned int speed)
    79	{
    80		plt->speed = speed;
    81		phy_led_trigger_format_name(phy, plt->name, sizeof(plt->name),
  > 82					    phy_speed_to_str(speed));
    83		plt->trigger.name = plt->name;
    84	
    85		return led_trigger_register(&plt->trigger);
    86	}
    87	

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