On 31/01/17 17:30, Tony Lindgren wrote: > * Tomi Valkeinen <tomi.valkeinen@xxxxxx> [170131 05:38]: >> On 27/01/17 17:16, Tony Lindgren wrote: >> >>> Then not related to n900, but trying to rmmod omapdrm produces: >>> >>> # rmmod omapdrm >>> rmmod: can't unload 'omapdrm': Resource temporarily unavailable >> >> And you don't have any app running which uses DRM? Does lsmod show a ref >> to omapdrm? 'cat debugfs/dri/0/clients' does not show anything? >> >> I'm not sure if there are any other reasons why omapdrm would be busy. > > Nothing there it seems: > > # cat /sys/kernel/debug/dri/0/clients > command pid dev master a uid magic > > Then lsmod output: > > # lsmod | grep drm > omapdrm 65655 1 > drm_kms_helper 147599 1 omapdrm > cfbfillrect 3614 1 drm_kms_helper > syscopyarea 3187 2 omapdrm,drm_kms_helper > cfbimgblt 2416 1 drm_kms_helper > sysfillrect 3550 2 omapdrm,drm_kms_helper > sysimgblt 2352 2 omapdrm,drm_kms_helper > fb_sys_fops 1767 2 omapdrm,drm_kms_helper > cfbcopyarea 3187 1 drm_kms_helper > drm 334071 3 omapdrm,drm_kms_helper > omapdss 231881 3 omapdrm,panel_sony_acx565akm > > No idea what is using omapdrm.. I have everything as loadable > modules, this for drm: > > $ grep DRM .config | grep -v ^# > CONFIG_DRM=m > CONFIG_DRM_KMS_HELPER=m > CONFIG_DRM_KMS_FB_HELPER=y > CONFIG_DRM_FBDEV_EMULATION=y Oh, right. You have fbdev enabled, and probably you have CONFIG_FRAMEBUFFER_CONSOLE enabled. fbconsole takes a ref. There are directions on how to unbind the console manually from the fb in Documentation/fb/fbcon.txt. I never have fbcon enabled, so it didn't occur to me right away... Tomi
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