On Tue, Oct 08, 2013 at 11:58:10PM -0700, Greg KH wrote:
> On Tue, Oct 08, 2013 at 10:30:17AM +0800, Peter Chen wrote:
> > Fixing the below dump:
> >
> > root@freescale ~$ modprobe g_serial
> > g_serial gadget: Gadget Serial v2.4
> > g_serial gadget: g_serial ready
> > BUG: sleeping function called from invalid context at /home/b29397/work/projects/upstream/usb/usb/drivers/base/power/runtime.c:952
> > in_atomic(): 1, irqs_disabled(): 128, pid: 805, name: modprobe
> > 2 locks held by modprobe/805:
> > #0: (udc_lock){+.+.+.}, at: [<7f000a74>] usb_gadget_probe_driver+0x44/0xb4 [udc_core]
> > #1: (&(&ci->lock)->rlock){......}, at: [<7f033488>] ci_udc_start+0x94/0x110 [ci_hdrc]
> > irq event stamp: 3878
> > hardirqs last enabled at (3877): [<806b6720>] _raw_spin_unlock_irqrestore+0x40/0x6c
> > hardirqs last disabled at (3878): [<806b6474>] _raw_spin_lock_irqsave+0x2c/0xa8
> > softirqs last enabled at (3872): [<8002ec0c>] __do_softirq+0x1c8/0x2e8
> > softirqs last disabled at (3857): [<8002f180>] irq_exit+0xbc/0x110
> > CPU: 0 PID: 805 Comm: modprobe Not tainted 3.11.0-next-20130910+ #85
> > [<80016b94>] (unwind_backtrace+0x0/0xf8) from [<80012e0c>] (show_stack+0x20/0x24)
> > [<80012e0c>] (show_stack+0x20/0x24) from [<806af554>] (dump_stack+0x9c/0xc4)
> > [<806af554>] (dump_stack+0x9c/0xc4) from [<8005940c>] (__might_sleep+0xf4/0x134)
> > [<8005940c>] (__might_sleep+0xf4/0x134) from [<803a04a4>] (__pm_runtime_resume+0x94/0xa0)
> > [<803a04a4>] (__pm_runtime_resume+0x94/0xa0) from [<7f0334a4>] (ci_udc_start+0xb0/0x110 [ci_hdrc])
> > [<7f0334a4>] (ci_udc_start+0xb0/0x110 [ci_hdrc]) from [<7f0009b4>] (udc_bind_to_driver+0x5c/0xd8 [udc_core])
> > [<7f0009b4>] (udc_bind_to_driver+0x5c/0xd8 [udc_core]) from [<7f000ab0>] (usb_gadget_probe_driver+0x80/0xb4 [udc_core])
> > [<7f000ab0>] (usb_gadget_probe_driver+0x80/0xb4 [udc_core]) from [<7f008618>] (usb_composite_probe+0xac/0xd8 [libcomposite])
> > [<7f008618>] (usb_composite_probe+0xac/0xd8 [libcomposite]) from [<7f04b168>] (init+0x8c/0xb4 [g_serial])
> > [<7f04b168>] (init+0x8c/0xb4 [g_serial]) from [<800088e8>] (do_one_initcall+0x108/0x16c)
> > [<800088e8>] (do_one_initcall+0x108/0x16c) from [<8008e518>] (load_module+0x1b00/0x20a4)
> > [<8008e518>] (load_module+0x1b00/0x20a4) from [<8008eba8>] (SyS_init_module+0xec/0x100)
> > [<8008eba8>] (SyS_init_module+0xec/0x100) from [<8000ec40>] (ret_fast_syscall+0x0/0x48)
> >
> > Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
>
> Is this seen in 3.12-rc or just on top of your current patchset, so it
> can wait for the 3.13-rc1 merge?
>
It can wait for the 3.13-rc1 merge, thanks.
--
Best Regards,
Peter Chen
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