linux-kernel - [asahilinux:bits/080-wifi 11/39] drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c:74:10: warning: variable 'len' set but not used

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Date:   Fri, 21 Jan 2022 22:05:28 +0800
From:   kernel test robot <lkp@...el.com>
To:     Hector Martin <marcan@...can.st>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [asahilinux:bits/080-wifi 11/39]
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c:74:10: warning:
 variable 'len' set but not used

tree:   https://github.com/AsahiLinux/linux bits/080-wifi
head:   1753101ce16367deadb5ec5ab5dc7ab4894649bf
commit: cc44c86950084bc3437485288390841cf117c0d1 [11/39] brcmfmac: of: Use devm_kstrdup for board_type & check for errors
config: x86_64-randconfig-a003-20220117 (https://download.01.org/0day-ci/archive/20220121/202201212104.gFjUBTm8-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 7b3d30728816403d1fd73cc5082e9fb761262bce)
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/AsahiLinux/linux/commit/cc44c86950084bc3437485288390841cf117c0d1
        git remote add asahilinux https://github.com/AsahiLinux/linux
        git fetch --no-tags asahilinux bits/080-wifi
        git checkout cc44c86950084bc3437485288390841cf117c0d1
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/net/wireless/broadcom/brcm80211/brcmfmac/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c:74:10: warning: variable 'len' set but not used [-Wunused-but-set-variable]
                   int i, len;
                          ^
   1 warning generated.


vim +/len +74 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c

1a3ac5c651a0c85 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Shawn Guo        2021-04-17  60  
e457a8a01a19277 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Rafał Miłecki    2017-01-07  61  void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
e457a8a01a19277 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Rafał Miłecki    2017-01-07  62  		    struct brcmf_mp_device *settings)
61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c          Chen-Yu Tsai     2014-06-29  63  {
e457a8a01a19277 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Rafał Miłecki    2017-01-07  64  	struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio;
0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede    2018-10-10  65  	struct device_node *root, *np = dev->of_node;
61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c          Chen-Yu Tsai     2014-06-29  66  	int irq;
1a3ac5c651a0c85 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Shawn Guo        2021-04-17  67  	int err;
61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c          Chen-Yu Tsai     2014-06-29  68  	u32 irqf;
61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c          Chen-Yu Tsai     2014-06-29  69  	u32 val;
61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c          Chen-Yu Tsai     2014-06-29  70  
0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede    2018-10-10  71  	/* Set board-type to the first string of the machine compatible prop */
0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede    2018-10-10  72  	root = of_find_node_by_path("/");
0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede    2018-10-10  73  	if (root) {
29e354ebeeecaee drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Matthias Brugger 2020-07-01 @74  		int i, len;

:::::: The code at line 74 was first introduced by commit
:::::: 29e354ebeeecaee979e6fe22cd6272682d7552c9 brcmfmac: Transform compatible string for FW loading

:::::: TO: Matthias Brugger <mbrugger@...e.com>
:::::: CC: Kalle Valo <kvalo@...eaurora.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org