Hi Tomi On Mon, Sep 09, 2024 at 08:22:59AM GMT, Tomi Valkeinen wrote: > Hi Laurent, Jacopo, > > On 09/09/2024 08:08, Tomi Valkeinen wrote: > > Hi, > > > > On 05/09/2024 14:11, Laurent Pinchart wrote: > > > On Thu, Sep 05, 2024 at 06:50:48PM +0800, kernel test robot wrote: > > > > Hi Tomi, > > > > > > > > kernel test robot noticed the following build warnings: > > > > > > > > [auto build test WARNING on 431c1646e1f86b949fa3685efc50b660a364c2b6] > > > > > > > > url: https://github.com/intel-lab-lkp/linux/commits/Tomi- > > > > Valkeinen/media-uapi-Add-meta-formats-for-PiSP-FE-config-and- > > > > stats/20240904-192729 > > > > base: 431c1646e1f86b949fa3685efc50b660a364c2b6 > > > > patch link: https://lore.kernel.org/r/20240904-rp1-cfe-v4-3- > > > > f1b5b3d69c81%40ideasonboard.com > > > > patch subject: [PATCH v4 3/4] media: raspberrypi: Add support > > > > for RP1-CFE > > > > config: m68k-allmodconfig (https://download.01.org/0day-ci/ > > > > archive/20240905/202409051822.ZzUGw3XQ-lkp@xxxxxxxxx/config) > > > > compiler: m68k-linux-gcc (GCC) 14.1.0 > > > > reproduce (this is a W=1 build): > > > > (https://download.01.org/0day-ci/ > > > > archive/20240905/202409051822.ZzUGw3XQ-lkp@xxxxxxxxx/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@xxxxxxxxx> > > > > | Closes: https://lore.kernel.org/oe-kbuild- > > > > all/202409051822.ZzUGw3XQ-lkp@xxxxxxxxx/ > > > > > > > > All warnings (new ones prefixed by >>): > > > > > > > > > > drivers/media/platform/raspberrypi/rp1-cfe/cfe.c:2445:12: > > > > > > warning: 'cfe_runtime_resume' defined but not used > > > > > > [-Wunused-function] > > > > 2445 | static int cfe_runtime_resume(struct device *dev) > > > > | ^~~~~~~~~~~~~~~~~~ > > > > > > drivers/media/platform/raspberrypi/rp1-cfe/cfe.c:2435:12: > > > > > > warning: 'cfe_runtime_suspend' defined but not used > > > > > > [-Wunused-function] > > > > 2435 | static int cfe_runtime_suspend(struct device *dev) > > > > | ^~~~~~~~~~~~~~~~~~~ > > > > vim +/cfe_runtime_resume +2445 > > > > drivers/media/platform/raspberrypi/ rp1-cfe/cfe.c > > > > > > The recommended way to fix this is to switch from SET_RUNTIME_PM_OPS() > > > to RUNTIME_PM_OPS() and use pm_ptr() to set .driver.pm. This being said, > > > the driver won't work on a kernel with !CONFIG_PM given how you > > > implemented probe() and remove(). > > > > > > The pisp-be driver suffered from the same issue and Jacopo fixed it in > > > the last version. You can have a look at implement something similar. > > > > I can't right away think of any reason to not just depend on CONFIG_PM > > and be done with it without any tricks. Do you know if there's a reason? We had the same discussion, and even if I would be fine depending on CONFIG_PM, supporting !CONFIG_PM is not that much work, I kept it as an optional dependency (it was suggested during the review as well) > > Also, I don't think pisp-be is correct. It just calls > pispbe_runtime_resume() in probe() to wake the IP up (which only enables > pisp clock), without telling the runtime PM about it. This means the parent > device and the suppliers may not be powered up. Are you referring to the code currently in the tree or to this patch ? https://patchwork.linuxtv.org/project/linux-media/patch/20240904095836.344833-5-jacopo.mondi@xxxxxxxxxxxxxxxx/ > > Tomi > >
