On 29/07/15 12:44, Dr. H. Nikolaus Schaller wrote: >> We have a similar error on OMAP5 here: >> >> [ 11.027144] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.2.0-rc4-letux+ #1187 >> [ 11.034790] Hardware name: Generic OMAP5 (Flattened Device Tree) >> [ 11.041077] Workqueue: deferwq deferred_probe_work_func >> [ 11.046557] [<c0015a00>] (unwind_backtrace) from [<c00124a0>] (show_stack+0x10/0x14) >> [ 11.054663] [<c00124a0>] (show_stack) from [<c05cb694>] (dump_stack+0x78/0x94) >> [ 11.062224] [<c05cb694>] (dump_stack) from [<c02cfd5c>] (kobject_release+0x68/0x7c) >> [ 11.070234] [<c02cfd5c>] (kobject_release) from [<c03291d8>] (omapdss_of_find_source_for_first_ep+0x58/0x74) >> [ 11.080510] [<c03291d8>] (omapdss_of_find_source_for_first_ep) from [<bf089290>] (hdmic_probe+0xb4/0x22c [connector_hdmi]) >> [ 11.092080] [<bf089290>] (hdmic_probe [connector_hdmi]) from [<c0381490>] (platform_drv_probe+0x48/0x90) >> [ 11.101997] [<c0381490>] (platform_drv_probe) from [<c037fc98>] (really_probe+0xd4/0x238) >> [ 11.110556] [<c037fc98>] (really_probe) from [<c037ff44>] (driver_probe_device+0x30/0x48) >> [ 11.119108] [<c037ff44>] (driver_probe_device) from [<c037e7bc>] (bus_for_each_drv+0x4c/0x84) >> [ 11.128023] [<c037e7bc>] (bus_for_each_drv) from [<c037fe90>] (__device_attach+0x70/0xd0) >> [ 11.136579] [<c037fe90>] (__device_attach) from [<c037f3f8>] (bus_probe_device+0x28/0x84) >> [ 11.145135] [<c037f3f8>] (bus_probe_device) from [<c037f808>] (deferred_probe_work_func+0x58/0x88) >> [ 11.154518] [<c037f808>] (deferred_probe_work_func) from [<c0054ff0>] (process_one_work+0x294/0x4a0) >> [ 11.164083] [<c0054ff0>] (process_one_work) from [<c0055414>] (worker_thread+0x1ec/0x2fc) >> [ 11.172641] [<c0055414>] (worker_thread) from [<c005a3b4>] (kthread+0xd4/0xe8) >> [ 11.180200] [<c005a3b4>] (kthread) from [<c000edf8>] (ret_from_fork+0x14/0x3c) >> >> So it looks as if there are more get/put mismatches in the drivers which are usually not visible. Yep, we'll have a look at that. Tomi
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