#11471 HIGH 1.75-so: Nobody cares about irq 48 but perhaps they should

[Zarro Boogs per Child]

#11471: Nobody cares about irq 48 but perhaps they should
-----------------------+----------------------------------------------------
 Reporter:  greenfeld  |                 Owner:                                   
     Type:  defect     |                Status:  new                              
 Priority:  high       |             Milestone:  1.75-software                    
Component:  kernel     |               Version:  Development build as of this date
 Keywords:             |           Next_action:  diagnose                         
 Verified:  0          |   Deployment_affected:                                   
Blockedby:             |              Blocking:                                   
-----------------------+----------------------------------------------------
 A B1 SKU 198 running RUNIN with 11.3.1 os11 logged 100+ cases of irq 48
 not being properly handled before rebooting.

 This has been seen one or two times before on rare occasion using sound
 with other activities, and tends to lead to quite loud/noisy/annoying
 output (but not in this case) from the XO's audio system as it appears to
 be locked up.  Which is why no one probably grabbed logs before.

 {{{
 [ 3651.600254] irq 48: nobody cared (try booting with the "irqpoll"
 option)
 [ 3651.610024] [<c00359ac>] (unwind_backtrace+0x0/0x120) from [<c0088990>]
 (__report_bad_irq.clone.6+0x24/0xe8)
 [ 3651.610085] [<c0088990>] (__report_bad_irq.clone.6+0x24/0xe8) from
 [<c0088c34>] (note_interrupt+0x18c/0x230)
 [ 3651.610113] [<c0088c34>] (note_interrupt+0x18c/0x230) from [<c0087660>]
 (handle_irq_event_percpu+0x150/0x174)
 [ 3651.610140] [<c0087660>] (handle_irq_event_percpu+0x150/0x174) from
 [<c00876dc>] (handle_irq_event+0x58/0x80)
 [ 3651.610193] [<c00876dc>] (handle_irq_event+0x58/0x80) from [<c0089508>]
 (handle_level_irq+0xc4/0x114)
 [ 3651.610193] [<c0089508>] (handle_level_irq+0xc4/0x114) from
 [<c0087090>] (generic_handle_irq+0x20/0x30)
 [ 3651.610218] [<c0087090>] (generic_handle_irq+0x20/0x30) from
 [<c002a060>] (asm_do_IRQ+0x60/0x84)
 [ 3651.610252] [<c002a060>] (asm_do_IRQ+0x60/0x84) from [<c002fc1c>]
 (__irq_svc+0x5c/0xa0)
 [ 3651.610277] Exception stack(0xdc48de00 to 0xdc48de48)
 [ 3651.610292] de00: 00000000 00000020 dc48de48 00000103 00000002 c04efc64
 dc48c000 00000002
 [ 3651.610311] de20: c04efc40 00000000 0000000a c04efc64 00000000 dc48de48
 c004bf7c c004babc
 [ 3651.610332] de40: 20000113 ffffffff
 [ 3651.610347] [<c002fc1c>] (__irq_svc+0x5c/0xa0) from [<c004babc>]
 (__do_softirq+0x40/0x10c)
 [ 3651.610369] [<c004babc>] (__do_softirq+0x40/0x10c) from [<c004bf7c>]
 (irq_exit+0x44/0xac)
 [ 3651.610392] [<c004bf7c>] (irq_exit+0x44/0xac) from [<c002a064>]
 (asm_do_IRQ+0x64/0x84)
 [ 3651.610415] [<c002a064>] (asm_do_IRQ+0x64/0x84) from [<c002fc1c>]
 (__irq_svc+0x5c/0xa0)
 (lots of debug output)
 [ 3651.610750] handlers:
 [ 3651.610762] [<c02a62f4>] mmp2_pcm_dma_irq
 [ 3651.610782] Disabling IRQ #48
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/11471>
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