Re: [BUG] vt6655: A possible sleep-in-atomic bug in vt6655_suspend

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Okay, I will send a patch :)


Thanks,
Jia-Ju Bai

On 2017/10/9 13:43, Greg KH wrote:
On Mon, Oct 09, 2017 at 09:10:28AM +0800, Jia-Ju Bai wrote:
According to device_main.c, the driver may sleep under a spinlock,
and the function call path is:
vt6655_suspend (acquire the spinlock)
   pci_set_power_state
     __pci_start_power_transition (drivers/pci/pci.c)
       msleep --> may sleep

A possible fix is to replace msleep with mdelay in
__pci_start_power_transition in drivers/pci/pci.c.
Patches are usually best to send in for things that you find like this.

thanks,

greg k-h





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