Hi Robert On Mon, 31 May 2010, Robert Jarzmik wrote: > I tried to upgrade from 2.6.30 to 2.6.33 and verify my board (ie. the mt9m111 > sensor with pxa_camera host). > > I'm a bit surprised it didn't work. I dig just a bit, and found that : > - in soc_camera_init_i2c(), the following call fails > subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, > icl->module_name, icl->board_info, NULL); > I have subdev = NULL. > > - as a result, I'm getting that kind of log : > camera 0-0: Probing 0-0 > pxa27x-camera pxa27x-camera.0: Registered platform device at c3010900 data c03f0c24 > pxa27x-camera pxa27x-camera.0: PXA Camera driver attached to camera 0 > RJK: subdev=NULL, module=mt9m111 > pxa27x-camera pxa27x-camera.0: PXA Camera driver detached from camera 0 > camera: probe of 0-0 failed with error -12 a lot of things changed in and around soc-camera between 2.6.30 and .33... E.g., previously you could load driver modules in any order, it would work in any case. Now if you load your host driver (pxa) and your client driver is not there yet, it should be automatically loaded. However, if your user-space doesn't support this, it won't work. Can this be the reason gor your problem? Otherwise, I'd suspect a problem with your platform data (cf. other platforms), or, eventually with mt9m111. > - if I try 2.6.34, I have no error report, and mt9m111 driver is not probed > either. > > Is there an explanation as to why I have this regression ? Is something to be > done with the v4l2 migration ? Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
