Re: [Outreachy kernel] [PATCH] staging: rtl8192u: Remove variable set but not used

[kernel test robot <lkp@intel.com>]

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Hi "Fabio,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on staging/staging-testing]

url:    https://github.com/0day-ci/linux/commits/Fabio-M-De-Francesco/staging-rtl8192u-Remove-variable-set-but-not-used/20210412-014242
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 1b9e18de8d43bf798622cc365f99b41f180b446f
config: arc-allyesconfig (attached as .config)
compiler: arceb-elf-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/be9cfd3fe0983d09a3d400bd84e497367fc5d29d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Fabio-M-De-Francesco/staging-rtl8192u-Remove-variable-set-but-not-used/20210412-014242
        git checkout be9cfd3fe0983d09a3d400bd84e497367fc5d29d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

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

All errors (new ones prefixed by >>):

   drivers/staging/rtl8192u/r8192U_core.c: In function 'rtl8192_hard_data_xmit':
>> drivers/staging/rtl8192u/r8192U_core.c:917:2: error: 'ret' undeclared (first use in this function); did you mean 'net'?
     917 |  ret = rtl8192_tx(dev, skb);
         |  ^~~
         |  net
   drivers/staging/rtl8192u/r8192U_core.c:917:2: note: each undeclared identifier is reported only once for each function it appears in


vim +917 drivers/staging/rtl8192u/r8192U_core.c

8fc8598e61f6f3 Jerry Chuang     2009-11-03  897  
8fc8598e61f6f3 Jerry Chuang     2009-11-03  898  /* this function TX data frames when the ieee80211 stack requires this.
8fc8598e61f6f3 Jerry Chuang     2009-11-03  899   * It checks also if we need to stop the ieee tx queue, eventually do it
8fc8598e61f6f3 Jerry Chuang     2009-11-03  900   */
069b3162590896 Raphaël Beamonte 2015-09-20  901  static void rtl8192_hard_data_xmit(struct sk_buff *skb, struct net_device *dev,
069b3162590896 Raphaël Beamonte 2015-09-20  902  				   int rate)
8fc8598e61f6f3 Jerry Chuang     2009-11-03  903  {
8fc8598e61f6f3 Jerry Chuang     2009-11-03  904  	struct r8192_priv *priv = (struct r8192_priv *)ieee80211_priv(dev);
8fc8598e61f6f3 Jerry Chuang     2009-11-03  905  	unsigned long flags;
20f896c4dbb48f simran singhal   2017-02-12  906  	struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
8fc8598e61f6f3 Jerry Chuang     2009-11-03  907  	u8 queue_index = tcb_desc->queue_index;
8fc8598e61f6f3 Jerry Chuang     2009-11-03  908  
8fc8598e61f6f3 Jerry Chuang     2009-11-03  909  	/* shall not be referred by command packet */
4a8d1135548baf Xenia Ragiadakou 2013-06-09  910  	RTL8192U_ASSERT(queue_index != TXCMD_QUEUE);
8fc8598e61f6f3 Jerry Chuang     2009-11-03  911  
8fc8598e61f6f3 Jerry Chuang     2009-11-03  912  	spin_lock_irqsave(&priv->tx_lock, flags);
8fc8598e61f6f3 Jerry Chuang     2009-11-03  913  
c3f463484bdd0a Ben Hutchings    2016-04-21  914  	*(struct net_device **)(skb->cb) = dev;
8fc8598e61f6f3 Jerry Chuang     2009-11-03  915  	tcb_desc->bTxEnableFwCalcDur = 1;
8fc8598e61f6f3 Jerry Chuang     2009-11-03  916  	skb_push(skb, priv->ieee80211->tx_headroom);
8fc8598e61f6f3 Jerry Chuang     2009-11-03 @917  	ret = rtl8192_tx(dev, skb);
8fc8598e61f6f3 Jerry Chuang     2009-11-03  918  
8fc8598e61f6f3 Jerry Chuang     2009-11-03  919  	spin_unlock_irqrestore(&priv->tx_lock, flags);
8fc8598e61f6f3 Jerry Chuang     2009-11-03  920  }
8fc8598e61f6f3 Jerry Chuang     2009-11-03  921  

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

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