Hi Mauro,
Here are the results after testing the latest patch:
[33922.643770] usbcore: deregistering interface driver dvb_usb_gp8psk
[33922.643789] gp8psk: unregistering fe0
[33922.643865] gp8psk: detaching fe0
[33922.643868] ------------[ cut here ]------------
[33922.643875] WARNING: CPU: 1 PID: 8895 at kernel/module.c:1108
module_put+0x67/0x80
[33922.643876] Modules linked in: dvb_usb_gp8psk(O-) dvb_usb(O)
dvb_core(O) nvidia_drm(PO) nvidia_modeset(PO) snd_hda_codec_hdmi
snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer
snd soundcore nvidia(PO) [last unloaded: dvb_core]
[33922.643890] CPU: 1 PID: 8895 Comm: rmmod Tainted: P WC O
4.8.4-build.2 #1
[33922.643891] Hardware name: MSI MS-7309/MS-7309, BIOS V1.12 02/23/2009
[33922.643893] 00000000 c12c15f0 00000000 00000000 c103fc7a c161ecc0
00000001 000022bf
[33922.643897] c161e50f 00000454 c10a4b87 c10a4b87 00000009 f804fd80
00000000 00000000
[33922.643901] f3cca000 c103fd43 00000009 00000000 00000000 c10a4b87
f804e6e0 c10a58fa
[33922.643905] Call Trace:
[33922.643909] [<c12c15f0>] ? dump_stack+0x44/0x64
[33922.643913] [<c103fc7a>] ? __warn+0xfa/0x120
[33922.643915] [<c10a4b87>] ? module_put+0x67/0x80
[33922.643917] [<c10a4b87>] ? module_put+0x67/0x80
[33922.643919] [<c103fd43>] ? warn_slowpath_null+0x23/0x30
[33922.643921] [<c10a4b87>] ? module_put+0x67/0x80
[33922.643924] [<f804e6e0>] ? gp8psk_fe_set_frontend+0x460/0x460
[dvb_usb_gp8psk]
[33922.643927] [<c10a58fa>] ? symbol_put_addr+0x2a/0x50
[33922.643929] [<f804d0b9>] ? gp8psk_usb_disconnect+0xb9/0xd0 [dvb_usb_gp8psk]
[33922.643932] [<c13da272>] ? usb_unbind_interface+0x62/0x250
[33922.643936] [<c1551f3f>] ? _raw_spin_unlock_irqrestore+0xf/0x30
[33922.643939] [<c1372ea4>] ? __pm_runtime_idle+0x44/0x70
[33922.643943] [<c1369a68>] ? __device_release_driver+0x78/0x120
[33922.643945] [<c136a297>] ? driver_detach+0x87/0x90
[33922.643947] [<c13695d8>] ? bus_remove_driver+0x38/0x90
[33922.643949] [<c13d9608>] ? usb_deregister+0x58/0xb0
[33922.643951] [<c10a5eb0>] ? SyS_delete_module+0x130/0x1f0
[33922.643954] [<c1036200>] ? __do_page_fault+0x1a0/0x440
[33922.643956] [<c1000fa5>] ? exit_to_usermode_loop+0x85/0x90
[33922.643958] [<c10013f0>] ? do_fast_syscall_32+0x80/0x130
[33922.643961] [<c1552403>] ? sysenter_past_esp+0x40/0x6a
[33922.643962] ---[ end trace a387b7eddb538bfe ]---
[33922.643963] gp8psk: calling dvb_usb_device_exit
[33922.646462] dvb-usb: Genpix SkyWalker-2 DVB-S receiver successfully
deinitialized and disconnected.
$ gdb /usr/src/linux/drivers/media/usb/dvb-usb/dvb-usb-gp8psk.ko
GNU gdb (Debian 7.11.1-2) 7.11.1
...
Reading symbols from
/usr/src/linux/drivers/media/usb/dvb-usb/dvb-usb-gp8psk.ko...done.
(gdb) l *gp8psk_fe_set_frontend+0x460
0x1710 is in gp8psk_fe_release (drivers/media/usb/dvb-usb/gp8psk-fe.c:325).
320 }
321
322 static void gp8psk_fe_release(struct dvb_frontend* fe)
323 {
324 struct gp8psk_fe_state *state = fe->demodulator_priv;
325 kfree(state);
326 }
327
328 static struct dvb_frontend_ops gp8psk_fe_ops;
329
(gdb) l *gp8psk_usb_disconnect+0xb9
0xe9 is in gp8psk_usb_disconnect (drivers/media/usb/dvb-usb/gp8psk.c:432).
427 for (; i >= 0; i--) {
428 if (adap->fe_adap[i].fe != NULL) {
429 printk("gp8psk: unregistering
fe%d\n", i);
430
dvb_unregister_frontend(adap->fe_adap[i].fe);
431 printk("gp8psk: detaching fe%d\n", i);
432
dvb_frontend_detach(adap->fe_adap[i].fe);
433 }
434 }
435 adap->num_frontends_initialized = 0;
436 }
Thanks,
Derek
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