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

[Jia-Ju Bai]

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.

This bug is found by my static analysis tool and my code review.


Thanks,
Jia-Ju Bai