On Wed, Jun 10, 2009 at 06:50:16PM +0530, Vasanth Thiagarajan wrote:
> On Tue, Jun 02, 2009 at 04:40:29PM +0530, Johannes Berg wrote:
> > This ports the ath9k rfkill code to the new API offered by
> > cfg80211 and thus removes a lot of useless stuff.
> >
>
> I get the following lockdep warning few times when tried to scan
> after rfkill on/off. One more issue is, when rfkill is enabled before
> reboot, I could not bring up the interface when the rfkill is turned
> off after reboot. Apart from this it looks good, fixes a panic which
> used to happen during module unload.
>
> [ 757.714466] [<c015e17e>] __lock_acquire+0xece/0x1780
> [ 757.714473] [<c015eb10>] lock_acquire+0xe0/0x110
> [ 757.714477] [<c03bac0e>] mutex_lock_nested+0x5e/0x360
> [ 757.714484] [<c0307824>] rtnl_lock+0x14/0x20
> [ 757.714488] [<fbfc99cd>] 0xfbfc99cd
> [ 757.714501] [<f9d2d975>] rfkill_set_block+0x65/0xd0
> [rfkill]
> [ 757.714509] [<f9d2dcd4>] rfkill_epo+0x44/0xa0 [rfkill]
> [ 757.714515] [<f9d2e7ed>] rfkill_op_handler+0x5d/0x1c0
> [rfkill]
> [ 757.714522] [<c01459b0>] worker_thread+0x1c0/0x2f0
> [ 757.714528] [<c0149deb>] kthread+0x4b/0x80
> [ 757.714532] [<c01045e3>] kernel_thread_helper+0x7/0x10
> [ 757.714538] [<ffffffff>] 0xffffffff
> [ 757.714545]
> [ 757.714545] -> #1 (rfkill_global_mutex){+.+.+.}:
> [ 757.714550] [<c015e17e>] __lock_acquire+0xece/0x1780
> [ 757.714555] [<c015eb10>] lock_acquire+0xe0/0x110
> [ 757.714559] [<c03bac0e>] mutex_lock_nested+0x5e/0x360
> [ 757.714564] [<f9d2e3c4>] rfkill_register+0x24/0x270
> [rfkill]
> [ 757.714572] [<f89526e1>] wiphy_register+0x181/0x230
> [cfg80211]
> [ 757.714579] [<f8a05376>] ieee80211_register_hw+0x136/0x4d0
> [mac80211]
> [ 757.714593] [<f8a6b02c>] ath_attach+0x74c/0xa20 [ath9k]
> [ 757.714605] [<f8a7300c>] ath_pci_probe+0x12c/0x2e0 [ath9k]
> [ 757.714614] [<c02650c3>] local_pci_probe+0x13/0x20
> [ 757.714620] [<c0265f78>] pci_device_probe+0x68/0x90
> [ 757.714625] [<c02ce131>] driver_probe_device+0x71/0x170
> [ 757.714631] [<c02ce2b9>] __driver_attach+0x89/0xa0
> [ 757.714635] [<c02cd9bb>] bus_for_each_dev+0x5b/0x80
> [ 757.714639] [<c02cdfde>] driver_attach+0x1e/0x20
> [ 757.714644] [<c02cd2f7>] bus_add_driver+0x237/0x2f0
> [ 757.714648] [<c02ce59a>] driver_register+0x7a/0x150
> [ 757.714652] [<c02663d3>] __pci_register_driver+0x53/0xc0
> [ 757.714657] [<f8a731dc>] ath_pci_init+0x1c/0x20 [ath9k]
> [ 757.714666] [<f88c0022>] 0xf88c0022
> [ 757.714678] [<c010112b>] do_one_initcall+0x2b/0x1c0
> [ 757.714682] [<c0167c2a>] sys_init_module+0x8a/0x1d0
> [ 757.714687] [<c0103b08>] sysenter_do_call+0x12/0x3c
> [ 757.714691] [<ffffffff>] 0xffffffff
> [ 757.714709]
I was doing load/unload along with rf on/off and scan.
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