Hi Benoit, I see the below WARNING on v3.3-rc1, running on OMAP4460 Panda, when I unload the DSS modules. This didn't happen on v3.2, or linux-next from a few weeks ago.
Tomi [ 29.667572] ------------[ cut here ]------------ [ 29.667572] WARNING: at arch/arm/mach-omap2/omap_hwmod.c:1604 _idle+0x164/0x17c() [ 29.674774] omap_hwmod: dss_hdmi: idle state can only be entered from enabled state [ 29.688293] Modules linked in: cfbimgblt cfbfillrect cfbcopyarea omapdss(-) [last unloaded: panel _dvi] [ 29.693084] [<c001b614>] (unwind_backtrace+0x0/0xf0) from [<c0041d70>] (warn_slowpath_common+0x4c /0x64) [ 29.703918] [<c0041d70>] (warn_slowpath_common+0x4c/0x64) from [<c0041e1c>] (warn_slowpath_fmt+0x 30/0x40) [ 29.717987] [<c0041e1c>] (warn_slowpath_fmt+0x30/0x40) from [<c0027fdc>] (_idle+0x164/0x17c) [ 29.724670] [<c0027fdc>] (_idle+0x164/0x17c) from [<c0028850>] (omap_hwmod_idle+0x24/0x40) [ 29.729461] [<c0028850>] (omap_hwmod_idle+0x24/0x40) from [<c003b670>] (omap_device_idle_hwmods+0 x24/0x3c) [ 29.745086] [<c003b670>] (omap_device_idle_hwmods+0x24/0x3c) from [<c003b860>] (_omap_device_deac tivate+0x9c/0x138) [ 29.745086] [<c003b860>] (_omap_device_deactivate+0x9c/0x138) from [<c003c270>] (omap_device_idle +0x28/0x54) [ 29.745086] [<c003c270>] (omap_device_idle+0x28/0x54) from [<c003c2b8>] (_od_runtime_suspend+0x1c /0x24) [ 29.776672] [<c003c2b8>] (_od_runtime_suspend+0x1c/0x24) from [<c02b5a68>] (__rpm_callback+0x70/0 x98) [ 29.786346] [<c02b5a68>] (__rpm_callback+0x70/0x98) from [<c02b5f08>] (rpm_suspend+0x240/0x6c0) [ 29.786346] [<c02b5f08>] (rpm_suspend+0x240/0x6c0) from [<c02b734c>] (__pm_runtime_suspend+0x5c/0 x74) [ 29.799774] [<c02b734c>] (__pm_runtime_suspend+0x5c/0x74) from [<c02b2ec4>] (pm_generic_runtime_i dle+0x44/0x4c) [ 29.807586] [<c02b2ec4>] (pm_generic_runtime_idle+0x44/0x4c) from [<c02b5a68>] (__rpm_callback+0x 70/0x98) [ 29.807586] [<c02b5a68>] (__rpm_callback+0x70/0x98) from [<c02b64fc>] (rpm_idle+0x100/0x228) [ 29.831085] [<c02b64fc>] (rpm_idle+0x100/0x228) from [<c02b66f4>] (__pm_runtime_idle+0x5c/0x74) [ 29.843658] [<c02b66f4>] (__pm_runtime_idle+0x5c/0x74) from [<c02ae6a4>] (__device_release_driver +0x50/0xc0) [ 29.846649] [<c02ae6a4>] (__device_release_driver+0x50/0xc0) from [<c02aed0c>] (driver_detach+0xb 4/0xb8) [ 29.863891] [<c02aed0c>] (driver_detach+0xb4/0xb8) from [<c02ae580>] (bus_remove_driver+0x7c/0xc0 ) [ 29.870086] [<c02ae580>] (bus_remove_driver+0x7c/0xc0) from [<bf0000f0>] (omap_dss_remove+0x14/0x 6c [omapdss]) [ 29.877929] [<bf0000f0>] (omap_dss_remove+0x14/0x6c [omapdss]) from [<c02afe60>] (platform_drv_re move+0x18/0x1c) [ 29.893463] [<c02afe60>] (platform_drv_remove+0x18/0x1c) from [<c02ae6c4>] (__device_release_driv er+0x70/0xc0) [ 29.901489] [<c02ae6c4>] (__device_release_driver+0x70/0xc0) from [<c02aed0c>] (driver_detach+0xb 4/0xb8) [ 29.901489] [<c02aed0c>] (driver_detach+0xb4/0xb8) from [<c02ae580>] (bus_remove_driver+0x7c/0xc0 ) [ 29.924499] [<c02ae580>] (bus_remove_driver+0x7c/0xc0) from [<bf020e98>] (omap_dss_exit+0x48/0x58 [omapdss]) [ 29.932586] [<bf020e98>] (omap_dss_exit+0x48/0x58 [omapdss]) from [<c0098f54>] (sys_delete_module +0x164/0x254) [ 29.940399] [<c0098f54>] (sys_delete_module+0x164/0x254) from [<c0013c80>] (ret_fast_syscall+0x0/ 0x3c) [ 29.955139] ---[ end trace 52be023ca95d7e20 ]---
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