Hi, On Mon, Jul 17, 2017 at 02:29:04AM -0700, Tony Lindgren wrote: > * Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx> [170712 08:19]: > > * Switch from simple-audio-card to audio-graph-card > > Gave this a quick try against v4.13-rc1 with SND_AUDIO_GRAPH_CARD > enabled as a loadable module. However loading it oopses for me, > see below. Maybe some dependencies are missing? It works for me on top of v4.13-rc1 (my kernel is monolithic). Looking at the stacktrace it seems to be a bug in audio graph card and not in the codec driver. -- Sebastian > 8< -------------------- > BUG: sleeping function called from invalid context at kernel/locking/mutex.c:747 > in_atomic(): 1, irqs_disabled(): 128, pid: 1590, name: modprobe > INFO: lockdep is turned off. > irq event stamp: 0 > hardirqs last enabled at (0): [< (null)>] (null) > hardirqs last disabled at (0): [<c0137464>] copy_process.part.5+0x2c4/0x1ac8 > softirqs last enabled at (0): [<c0137464>] copy_process.part.5+0x2c4/0x1ac8 > softirqs last disabled at (0): [< (null)>] (null) > CPU: 0 PID: 1590 Comm: modprobe Tainted: G W 4.13.0-rc1+ #126 > Hardware name: Generic OMAP4 (Flattened Device Tree) > [<c0111524>] (unwind_backtrace) from [<c010d1fc>] (show_stack+0x10/0x14) > [<c010d1fc>] (show_stack) from [<c086375c>] (dump_stack+0xac/0xe0) > [<c086375c>] (dump_stack) from [<c0168c2c>] (___might_sleep+0x228/0x2ac) > [<c0168c2c>] (___might_sleep) from [<c087a86c>] (__mutex_lock+0x28/0x9fc) > [<c087a86c>] (__mutex_lock) from [<c087b25c>] (mutex_lock_nested+0x1c/0x24) > [<c087b25c>] (mutex_lock_nested) from [<c03532fc>] (kernfs_remove+0x18/0x30) > [<c03532fc>] (kernfs_remove) from [<c0867abc>] (kobject_del+0x14/0x44) > [<c0867abc>] (kobject_del) from [<c0867948>] (kobject_put+0x114/0x224) > [<c0867948>] (kobject_put) from [<c06c8e74>] (of_get_next_parent+0x2c/0x4c) > [<c06c8e74>] (of_get_next_parent) from [<c06ccd24>] (of_graph_get_port_parent+0x10/0x70) > [<c06ccd24>] (of_graph_get_port_parent) from [<bf4685e8>] (asoc_simple_card_parse_graph_dai+0x98/0xe0 [snd_soc_simple_card_utils]) > [<bf4685e8>] (asoc_simple_card_parse_graph_dai [snd_soc_simple_card_utils]) from [<bf8e5330>] (asoc_graph_card_probe+0x200/0x444 [snd_soc_audio_graph_card]) > [<bf8e5330>] (asoc_graph_card_probe [snd_soc_audio_graph_card]) from [<c05aa2b8>] (platform_drv_probe+0x50/0xb0) > [<c05aa2b8>] (platform_drv_probe) from [<c05a8088>] (driver_probe_device+0x33c/0x478) > [<c05a8088>] (driver_probe_device) from [<c05a82ac>] (__driver_attach+0xe8/0x110) > [<c05a82ac>] (__driver_attach) from [<c05a61c8>] (bus_for_each_dev+0x6c/0xa0) > [<c05a61c8>] (bus_for_each_dev) from [<c05a7354>] (bus_add_driver+0x198/0x270) > [<c05a7354>] (bus_add_driver) from [<c05a92c8>] (driver_register+0x78/0xf4) > [<c05a92c8>] (driver_register) from [<c010189c>] (do_one_initcall+0x3c/0x170) > [<c010189c>] (do_one_initcall) from [<c01edc24>] (do_init_module+0x5c/0x1e0) > [<c01edc24>] (do_init_module) from [<c01ec904>] (load_module+0x1270/0x14ec) > [<c01ec904>] (load_module) from [<c01ece08>] (SyS_finit_module+0xa8/0xec) > [<c01ece08>] (SyS_finit_module) from [<c0108440>] (ret_fast_syscall+0x0/0x1c) > OF: ERROR: Bad of_node_put() on /ocp/spi@48098000/pmic@0/audio-codec/port@0/endpoint
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