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	Sat, 7 Aug 2010 13:21:13 -0400
Date: Sat, 7 Aug 2010 19:21:08 +0200
From: Daniel Mack <daniel@caiaq.de>
To: linux-kernel@vger.kernel.org
Cc: linux-wireless@vger.kernel.org,
	Sven Neumann <s.neumann@raumfeld.com>,
	Michael Hirsch <m.hirsch@raumfeld.com>
Subject: wireless: Problems with ath5k and 2.6.35
Message-ID: <20100807172108.GA15974@buzzloop.caiaq.de>
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Sender: linux-wireless-owner@vger.kernel.org
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Hi,

we're having problems using an ath5k-based mini-PCI card on a mainboard
with a Geode CS5535 chipset. Below is the output generated by 2.6.35
vanilla, the first block is reported at boot time, the second one some
seconds later.

Don't know if this has been reported before, but at least I couldn't
find anything in recent LKML postings.


Thanks,
Daniel


[    2.142771] ath5k 0000:00:0c.0: guessed PCI INT A -> IRQ 9
[    2.148319] ath5k 0000:00:0c.0: sharing IRQ 9 with 0000:00:01.2
[    2.154548] ath5k 0000:00:0c.0: registered as 'phy0'
[    3.126593] irq 9: nobody cared (try booting with the "irqpoll" option)
[    3.130015] Pid: 1, comm: swapper Not tainted 2.6.35+ #1
[    3.130015] Call Trace:
[    3.130015]  [<c013e984>] __report_bad_irq+0x2e/0x6f
[    3.130015]  [<c013eab5>] note_interrupt+0xf0/0x147
[    3.130015]  [<c013f076>] handle_level_irq+0x6d/0x99
[    3.130015]  [<c0103bf6>] handle_irq+0x1a/0x20
[    3.130015]  [<c0103810>] do_IRQ+0x33/0x88
[    3.130015]  [<c0102a69>] common_interrupt+0x29/0x30
[    3.130015]  [<c0120e3c>] ? __do_softirq+0x34/0xca
[    3.130015]  [<c0120ef7>] do_softirq+0x25/0x2a
[    3.130015]  [<c0120fb7>] irq_exit+0x28/0x57
[    3.130015]  [<c0103850>] do_IRQ+0x73/0x88
[    3.130015]  [<c0102a69>] common_interrupt+0x29/0x30
[    3.130015]  [<c013007b>] ? __async_schedule+0x38/0xe9
[    3.130015]  [<c013e420>] ? __setup_irq+0x1d8/0x259
[    3.130015]  [<c013e544>] request_threaded_irq+0xa3/0xd0
[    3.130015]  [<c02486e5>] ? ath5k_intr+0x0/0x28b
[    3.130015]  [<c032e15c>] ath5k_pci_probe+0x2f4/0x13c5
[    3.130015]  [<c01e63fe>] ? idr_get_empty_slot+0x14f/0x24e
[    3.130015]  [<c0197f53>] ? sysfs_find_dirent+0x28/0x3a
[    3.130015]  [<c0198875>] ? sysfs_addrm_finish+0x15/0x9b
[    3.130015]  [<c0198258>] ? sysfs_add_one+0x12/0x7a
[    3.130015]  [<c01f76fb>] local_pci_probe+0xe/0x10
[    3.130015]  [<c01f77ff>] pci_device_probe+0x43/0x66
[    3.130015]  [<c021ac3d>] driver_probe_device+0x7a/0x10d
[    3.130015]  [<c021ad13>] __driver_attach+0x43/0x5f
[    3.130015]  [<c021a673>] bus_for_each_dev+0x3d/0x67
[    3.130015]  [<c021ab15>] driver_attach+0x14/0x16
[    3.130015]  [<c021acd0>] ? __driver_attach+0x0/0x5f
[    3.130015]  [<c021a0d8>] bus_add_driver+0xa2/0x1d1
[    3.130015]  [<c04471c1>] ? kernel_init+0x0/0x10c
[    3.130015]  [<c021af57>] driver_register+0x8b/0xeb
[    3.130015]  [<c045ec70>] ? net_olddevs_init+0x0/0x82
[    3.130015]  [<c04471c1>] ? kernel_init+0x0/0x10c
[    3.130015]  [<c01f799d>] __pci_register_driver+0x31/0x8a
[    3.130015]  [<c04471c1>] ? kernel_init+0x0/0x10c
[    3.130015]  [<c045ed45>] ? init_ath5k_pci+0x0/0x2d
[    3.130015]  [<c045ed5a>] init_ath5k_pci+0x15/0x2d
[    3.130015]  [<c010104b>] do_one_initcall+0x4b/0x130
[    3.130015]  [<c04471c1>] ? kernel_init+0x0/0x10c
[    3.130015]  [<c044724c>] kernel_init+0x8b/0x10c
[    3.130015]  [<c0102a76>] kernel_thread_helper+0x6/0x10
[    3.130015] handlers:
[    3.130015] [<c02486e5>] (ath5k_intr+0x0/0x28b)
[    3.130015] Disabling IRQ #9
[    4.014683] ath5k phy0: Atheros AR5414 chip found (MAC: 0xa5, PHY: 0x61)

[...]

[   13.510198] BUG: unable to handle kernel NULL pointer dereference at 0000009b
[   13.517396] IP: [<c1138a54>] ath5k_hw_is_intr_pending+0x1/0x19
[   13.520166] *pde = 00000000 
[   13.520166] Oops: 0000 [#1] 
[   13.520166] last sysfs file: 
[   13.520166] Modules linked in:
[   13.520166] 
[   13.520166] Pid: 0, comm: swapper Not tainted 2.6.34 #1 /
[   13.520166] EIP: 0060:[<c1138a54>] EFLAGS: 00010046 CPU: 0
[   13.520166] EIP is at ath5k_hw_is_intr_pending+0x1/0x19
[   13.520166] EAX: ffffffff EBX: cf9289a0 ECX: c12f5f24 EDX: cf9289a0
[   13.520166] ESI: c1303920 EDI: ffffffff EBP: c12f5ee4 ESP: c12f5e98
[   13.520166]  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[   13.520166] Process swapper (pid: 0, ti=c12f4000 task=c12fa300 task.ti=c12f4000)
[   13.520166] Stack:
[   13.520166]  c12f5ee4 c1143674 00000082 c12f5eb4 c103df6b 00000000 00000030 c12f5ec0
[   13.520166] <0> c12f5ec0 c10201ff c12f5ed8 c100393c c12f5f88 cfbdba00 00000001 c141e080
[   13.520166] <0> cfbe1de0 c1303920 00000000 c12f5efc c103d773 00000009 00000009 c141e080
[   13.520166] Call Trace:
[   13.520166]  [<c1143674>] ? ath5k_intr+0x25/0x1f5