Re: [PATCH v2] uwb: nxp: sr1xx: UWB driver support for sr1xx series chip

[kernel test robot]

Hi Manjunatha,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linux/master]
[also build test WARNING on linus/master v5.17-rc8]
[cannot apply to next-20220315]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Manjunatha-Venkatesh/uwb-nxp-sr1xx-UWB-driver-support-for-sr1xx-series-chip/20220315-191309
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2c271fe77d52a0555161926c232cd5bc07178b39
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220316/202203160341.mXSIGePW-lkp@xxxxxxxxx/config)
compiler: arceb-elf-gcc (GCC) 11.2.0
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/26293c243a1119c3a848e08c588e371f21aceb53
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Manjunatha-Venkatesh/uwb-nxp-sr1xx-UWB-driver-support-for-sr1xx-series-chip/20220315-191309
        git checkout 26293c243a1119c3a848e08c588e371f21aceb53
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash drivers/uwb/

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

All warnings (new ones prefixed by >>):

>> drivers/uwb/sr1xx.c:196:6: warning: no previous prototype for 'sr1xx_wait_for_irq_gpio_low' [-Wmissing-prototypes]
     196 | void sr1xx_wait_for_irq_gpio_low(struct sr1xx_dev *sr1xx_dev)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/uwb/sr1xx.c:793:5: warning: no previous prototype for 'sr1xx_dev_suspend' [-Wmissing-prototypes]
     793 | int sr1xx_dev_suspend(struct device *dev)
         |     ^~~~~~~~~~~~~~~~~
>> drivers/uwb/sr1xx.c:809:5: warning: no previous prototype for 'sr1xx_dev_resume' [-Wmissing-prototypes]
     809 | int sr1xx_dev_resume(struct device *dev)
         |     ^~~~~~~~~~~~~~~~


vim +/sr1xx_wait_for_irq_gpio_low +196 drivers/uwb/sr1xx.c

   189	
   190	/**
   191	 * sr1xx_wait_for_irq_gpio_low
   192	 *
   193	 * Function to wait till irq gpio goes low state
   194	 *
   195	 */
 > 196	void sr1xx_wait_for_irq_gpio_low(struct sr1xx_dev *sr1xx_dev)
   197	{
   198		int retry_count = 0;
   199	
   200		do {
   201			udelay(10);
   202			retry_count++;
   203			if (retry_count == MAX_RETRY_COUNT_FOR_HANDSHAKE) {
   204				dev_info(&sr1xx_dev->spi->dev,
   205					 "Slave not released the IRQ even after 10ms");
   206				break;
   207			}
   208		} while (gpio_get_value(sr1xx_dev->irq_gpio));
   209	}
   210	

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