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SubjectRe: [PATCH 01/78] media: atmel: properly get pm_runtime
Hi Mauro,

I love your patch! Yet something to improve:

[auto build test ERROR on linuxtv-media/master]
[also build test ERROR on rockchip/for-next tegra/for-next v5.12-rc8 next-20210423]
[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/Mauro-Carvalho-Chehab/media-use-pm_runtime_resume_and_get-instead-of-pm_runtime_get_sync/20210424-145029
base: git://linuxtv.org/media_tree.git master
config: nios2-randconfig-s031-20210424 (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-341-g8af24329-dirty
# https://github.com/0day-ci/linux/commit/40fc496edfa42498090c5a0d8230ec732b82bdc9
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Mauro-Carvalho-Chehab/media-use-pm_runtime_resume_and_get-instead-of-pm_runtime_get_sync/20210424-145029
git checkout 40fc496edfa42498090c5a0d8230ec732b82bdc9
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=nios2

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/media/platform/atmel/atmel-isc-base.c: In function 'isc_awb_work':
>> drivers/media/platform/atmel/atmel-isc-base.c:1844:2: error: 'ret' undeclared (first use in this function); did you mean 'net'?
1844 | ret = pm_runtime_resume_and_get(isc->dev);
| ^~~
| net
drivers/media/platform/atmel/atmel-isc-base.c:1844:2: note: each undeclared identifier is reported only once for each function it appears in

Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for SERIAL_CORE_CONSOLE
Depends on TTY && HAS_IOMEM
Selected by
- EARLY_PRINTK


vim +1844 drivers/media/platform/atmel/atmel-isc-base.c

1811
1812 static void isc_awb_work(struct work_struct *w)
1813 {
1814 struct isc_device *isc =
1815 container_of(w, struct isc_device, awb_work);
1816 struct regmap *regmap = isc->regmap;
1817 struct isc_ctrls *ctrls = &isc->ctrls;
1818 u32 hist_id = ctrls->hist_id;
1819 u32 baysel;
1820 unsigned long flags;
1821 u32 min, max;
1822
1823 /* streaming is not active anymore */
1824 if (isc->stop)
1825 return;
1826
1827 if (ctrls->hist_stat != HIST_ENABLED)
1828 return;
1829
1830 isc_hist_count(isc, &min, &max);
1831 ctrls->hist_minmax[hist_id][HIST_MIN_INDEX] = min;
1832 ctrls->hist_minmax[hist_id][HIST_MAX_INDEX] = max;
1833
1834 if (hist_id != ISC_HIS_CFG_MODE_B) {
1835 hist_id++;
1836 } else {
1837 isc_wb_update(ctrls);
1838 hist_id = ISC_HIS_CFG_MODE_GR;
1839 }
1840
1841 ctrls->hist_id = hist_id;
1842 baysel = isc->config.sd_format->cfa_baycfg << ISC_HIS_CFG_BAYSEL_SHIFT;
1843
> 1844 ret = pm_runtime_resume_and_get(isc->dev);
1845 if (ret < 0)
1846 return;
1847
1848 /*
1849 * only update if we have all the required histograms and controls
1850 * if awb has been disabled, we need to reset registers as well.
1851 */
1852 if (hist_id == ISC_HIS_CFG_MODE_GR || ctrls->awb == ISC_WB_NONE) {
1853 /*
1854 * It may happen that DMA Done IRQ will trigger while we are
1855 * updating white balance registers here.
1856 * In that case, only parts of the controls have been updated.
1857 * We can avoid that by locking the section.
1858 */
1859 spin_lock_irqsave(&isc->awb_lock, flags);
1860 isc_update_awb_ctrls(isc);
1861 spin_unlock_irqrestore(&isc->awb_lock, flags);
1862
1863 /*
1864 * if we are doing just the one time white balance adjustment,
1865 * we are basically done.
1866 */
1867 if (ctrls->awb == ISC_WB_ONETIME) {
1868 v4l2_info(&isc->v4l2_dev,
1869 "Completed one time white-balance adjustment.\n");
1870 /* update the v4l2 controls values */
1871 isc_update_v4l2_ctrls(isc);
1872 ctrls->awb = ISC_WB_NONE;
1873 }
1874 }
1875 regmap_write(regmap, ISC_HIS_CFG, hist_id | baysel | ISC_HIS_CFG_RAR);
1876 isc_update_profile(isc);
1877 /* if awb has been disabled, we don't need to start another histogram */
1878 if (ctrls->awb)
1879 regmap_write(regmap, ISC_CTRLEN, ISC_CTRL_HISREQ);
1880
1881 pm_runtime_put_sync(isc->dev);
1882 }
1883

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