[freescale-fslc:6.1-2.2.x-imx 13613/17898] drivers/staging/media/imx/imx8-isi-m2m.c:1431:12: warning: 'mxc_isi_m2m_runtime_suspend' defined but not used

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

tree:   https://github.com/Freescale/linux-fslc 6.1-2.2.x-imx
head:   4e3fc5471376a15279ee5c99e791a7c7b065cbc1
commit: 7e94f63be7a1e193e6426befc4e8760cc2e2acda [13613/17898] LF-9638 media: isi: Fix the isi-m2m play hang if convert format
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20240209/202402092317.nSysOX8Y-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240209/202402092317.nSysOX8Y-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402092317.nSysOX8Y-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/staging/media/imx/imx8-isi-m2m.c: In function 'mxc_isi_m2m_frame_write_done':
   drivers/staging/media/imx/imx8-isi-m2m.c:95:32: warning: variable 'src_buf' set but not used [-Wunused-but-set-variable]
      95 |         struct mxc_isi_buffer *src_buf, *dst_buf;
         |                                ^~~~~~~
   drivers/staging/media/imx/imx8-isi-m2m.c: At top level:
   drivers/staging/media/imx/imx8-isi-m2m.c:1272:6: warning: no previous prototype for 'mxc_isi_m2m_ctrls_delete' [-Wmissing-prototypes]
    1272 | void mxc_isi_m2m_ctrls_delete(struct mxc_isi_m2m_dev *isi_m2m)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/staging/media/imx/imx8-isi-m2m.c:1431:12: warning: 'mxc_isi_m2m_runtime_suspend' defined but not used [-Wunused-function]
    1431 | static int mxc_isi_m2m_runtime_suspend(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/staging/media/imx/imx8-isi-m2m.c:1414:12: warning: 'mxc_isi_m2m_runtime_resume' defined but not used [-Wunused-function]
    1414 | static int mxc_isi_m2m_runtime_resume(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/mxc_isi_m2m_runtime_suspend +1431 drivers/staging/media/imx/imx8-isi-m2m.c

  1413	
> 1414	static int mxc_isi_m2m_runtime_resume(struct device *dev)
  1415	{
  1416		struct mxc_isi_m2m_dev *isi_m2m = dev_get_drvdata(dev);
  1417		struct mxc_isi_dev *mxc_isi = mxc_isi_get_hostdata(isi_m2m->pdev);
  1418		int ret;
  1419	
  1420		ret = mxc_isi_clk_enable(mxc_isi);
  1421		if (ret) {
  1422			dev_err(dev, "%s clk enable fail\n", __func__);
  1423			return ret;
  1424		}
  1425		disp_mix_sft_rstn(mxc_isi, false);
  1426		disp_mix_clks_enable(mxc_isi, true);
  1427	
  1428		return 0;
  1429	}
  1430	
> 1431	static int mxc_isi_m2m_runtime_suspend(struct device *dev)
  1432	{
  1433		struct mxc_isi_m2m_dev *isi_m2m = dev_get_drvdata(dev);
  1434		struct mxc_isi_dev *mxc_isi = mxc_isi_get_hostdata(isi_m2m->pdev);
  1435	
  1436		disp_mix_clks_enable(mxc_isi, false);
  1437		mxc_isi_clk_disable(mxc_isi);
  1438	
  1439		return 0;
  1440	}
  1441	

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