vt6655: Fix a possible sleep-in-atomic bug in vt6655_suspend

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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

To fix it, pci_set_power_state is called without having a spinlock.

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

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jia-Ju Bai 2017-10-09 16:45:55 +08:00 • committed by Greg Kroah-Hartman

parent 6e047ac922

commit 42c8eb3f6e

1 changed files with 2 additions and 1 deletions

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drivers/staging/vt6655/device_main.c

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