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(parent: 2bf9806) | patch
rtl8188eu: Fix a possible sleep-in-atomic bug in _rtw_pwr_wakeup
authorJia-Ju Bai <baijiaju1990@163.com>
Sun, 8 Oct 2017 11:54:53 +0000 (19:54 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 18 Oct 2017 13:43:35 +0000 (15:43 +0200)
commitf3691e0042071812556f5444a944a175ca9746c6
tree9e45164152c49a1e9d0df31c74d6396bf8f86dd8tree | snapshot
parent2bf9806d4228f7a6195f8e03eda0479d2a93b411commit | diff
rtl8188eu: Fix a possible sleep-in-atomic bug in _rtw_pwr_wakeup

The driver may sleep under a spinlock, and the function call path is:
rtw_set_802_11_disassociate(acquire the spinlock)
  _rtw_pwr_wakeup
    usleep_range --> may sleep

To fix it, usleep_range is replaced with udelay.
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>
drivers/staging/rtl8188eu/core/rtw_pwrctrl.c diff | blob | history
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