[PATCH] staging: media: atomisp: compress return logic

[kbuild test robot]

Hi Arushi,

[auto build test ERROR on next-20170323]
[cannot apply to linuxtv-media/master v4.9-rc8 v4.9-rc7 v4.9-rc6 v4.11-rc4]
[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/Arushi-Singhal/staging-media-atomisp-compress-return-logic/20170327-030611
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/bufq/src/bufq.c: In function 'ia_css_bufq_dequeue_isys_event':
>> drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/bufq/src/bufq.c:467:18: error: unused variable 'return_err' [-Werror=unused-variable]
     enum ia_css_err return_err;
                     ^~~~~~~~~~
   cc1: all warnings being treated as errors

vim +/return_err +467 drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/bufq/src/bufq.c

a49d2536 Alan Cox 2017-02-17  461  }
a49d2536 Alan Cox 2017-02-17  462  
a49d2536 Alan Cox 2017-02-17  463  enum  ia_css_err ia_css_bufq_dequeue_isys_event(
a49d2536 Alan Cox 2017-02-17  464  	uint8_t item[BUFQ_EVENT_SIZE])
a49d2536 Alan Cox 2017-02-17  465  {
a49d2536 Alan Cox 2017-02-17  466  #if !defined(HAS_NO_INPUT_SYSTEM)
a49d2536 Alan Cox 2017-02-17 @467  	enum ia_css_err return_err;
a49d2536 Alan Cox 2017-02-17  468  	int error = 0;
a49d2536 Alan Cox 2017-02-17  469  	ia_css_queue_t *q;
a49d2536 Alan Cox 2017-02-17  470  

:::::: The code at line 467 was first introduced by commit
:::::: a49d25364dfb9f8a64037488a39ab1f56c5fa419 staging/atomisp: Add support for the Intel IPU v2

:::::: TO: Alan Cox <alan at linux.intel.com>
:::::: CC: Greg Kroah-Hartman <gregkh at linuxfoundation.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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