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(parent: 9e1e9f2) | patch
Bluetooth: Fix a possible sleep-in-atomic bug in bluecard_write_wakeup
authorJia-Ju Bai <baijiaju1990@gmail.com>
Wed, 13 Dec 2017 09:28:04 +0000 (17:28 +0800)
committerMarcel Holtmann <marcel@holtmann.org>
Wed, 13 Dec 2017 13:38:59 +0000 (14:38 +0100)
commit479f335c1b24b98fd1daae024d2f5d7cc355f1fc
tree981933b5f8e6358676474d23eaf906339a81e60btree | snapshot
parent9e1e9f20ca96026c56ac613317ea4bf01c6c3385commit | diff
Bluetooth: Fix a possible sleep-in-atomic bug in bluecard_write_wakeup

The driver may sleep in the interrupt handler.
The function call path is:
bluecard_interrupt (interrupt handler)
  bluecard_write_wakeup
    schedule_timeout --> may sleep

To fix it, schedule_timeout is replaced with mdelay.

This bug is found by my static analysis tool(DSAC) and checked by my code review.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
drivers/bluetooth/bluecard_cs.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;