Sebastian Andrzej Siewior e6da0edc24 Bluetooth: Acquire sk_lock.slock without disabling interrupts ... There was a lockdep which led to commit fad003b6c8 ("Bluetooth: Fix inconsistent lock state with RFCOMM") Lockdep noticed that `sk->sk_lock.slock' was acquired without disabling the softirq while the lock was also used in softirq context. Unfortunately the solution back then was to disable interrupts before acquiring the lock which however made lockdep happy. It would have been enough to simply disable the softirq. Disabling interrupts before acquiring a spinlock_t is not allowed on PREEMPT_RT because these locks are converted to 'sleeping' spinlocks. Use spin_lock_bh() in order to acquire the `sk_lock.slock'. Reported-by: Luis Claudio R. Goncalves <lclaudio@uudg.org> Reported-by: kbuild test robot <lkp@intel.com> [missing unlock] Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>		2020-05-29 13:48:46 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
core.c	Bluetooth: RFCOMM: Use MTU auto tune logic	2020-02-19 20:31:45 +01:00
sock.c	Bluetooth: Acquire sk_lock.slock without disabling interrupts	2020-05-29 13:48:46 +02:00
tty.c	Bluetooth: RFCOMM: fix ODEBUG bug in rfcomm_dev_ioctl	2020-03-08 14:44:58 +01:00