[linux-dvb] budget-av/CI-interface with SMP

Julian Scheel julian at jusst.de
Thu Aug 9 11:13:05 CEST 2007

Oliver Endriss schrieb:
> Julian Scheel wrote:
>> Attached is a patch which fixes an issue which I see with budget-av based 
>> cards using libdvben50221 based programs.
>> After some time (sometimes just a few minutes, sometimes hours) the stack 
>> breaks with error -2 or -3 and won't recover until the modules are reloaded.
> Please post the error log.
>> This does not happen anymore with this patch, but if no CI-interface is 
>> connected this patch floads the syslog with weird error-messages of which I 
>> have no idea why they are shown.
> Please post a log of these error messages.
> Thanks,
> Oliver
Sure, this is the error that loops all over:
BUG: scheduling while atomic: kdvb-ca-0:0/0x00000001/3030
 [<c03c51a6>] __sched_text_start+0x56/0x7a4
 [<c012c4bd>] lock_timer_base+0x15/0x2f
 [<c012c5c9>] __mod_timer+0x94/0x9e
 [<c03c6054>] schedule_timeout+0x70/0x8d
 [<c03c5869>] __sched_text_start+0x719/0x7a4
 [<c012bbfd>] process_timeout+0x0/0x5
 [<c012c5e0>] msleep+0xd/0x12
 [<e0bfbe23>] saa7146_wait_for_debi_done+0xda/0xec [saa7146]
 [<e0be778f>] ttpci_budget_debiread+0x47/0xd6 [budget_core]
 [<e0c3728b>] ciintf_poll_slot_status+0x99/0x146 [budget_av]
 [<e0c1d2d0>] dvb_ca_en50221_check_camstatus+0x37/0xae [dvb_core]
 [<e0c1e493>] dvb_ca_en50221_thread+0x1c7/0xb24 [dvb_core]
 [<c0134be4>] autoremove_wake_function+0x0/0x35
 [<c0127072>] do_exit+0x6a9/0x6ad
 [<c03c8a61>] do_page_fault+0x277/0x525
 [<c03c9612>] kprobe_flush_task+0x4b/0x80
 [<c012118f>] schedule_tail+0x4f/0x87
 [<c0103d46>] ret_from_fork+0x6/0x1c
 [<e0c1e2cc>] dvb_ca_en50221_thread+0x0/0xb24 [dvb_core]
 [<c0104a37>] kernel_thread_helper+0x7/0x10


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