diff options
| author | Andrew Lunn <andrew@lunn.ch> | 2017-12-02 18:11:04 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-12-28 12:26:35 +0100 |
| commit | 39c3fd58952d7599d367c84c1330b785d91d6088 (patch) | |
| tree | 156853f464f0148928514478abf3aeca86e30397 /include/linux/irqdesc.h | |
| parent | beacbc68ac3e23821a681adb30b45dc55b17488d (diff) | |
| download | lwn-39c3fd58952d7599d367c84c1330b785d91d6088.tar.gz lwn-39c3fd58952d7599d367c84c1330b785d91d6088.zip | |
kernel/irq: Extend lockdep class for request mutex
The IRQ code already has support for lockdep class for the lock mutex
in an interrupt descriptor. Extend this to add a second class for the
request mutex in the descriptor. Not having a class is resulting in
false positive splats in some code paths.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: linus.walleij@linaro.org
Cc: grygorii.strashko@ti.com
Cc: f.fainelli@gmail.com
Link: https://lkml.kernel.org/r/1512234664-21555-1-git-send-email-andrew@lunn.ch
Diffstat (limited to 'include/linux/irqdesc.h')
| -rw-r--r-- | include/linux/irqdesc.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 39fb3700f7a9..25b33b664537 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -255,12 +255,15 @@ static inline bool irq_is_percpu_devid(unsigned int irq) } static inline void -irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class) +irq_set_lockdep_class(unsigned int irq, struct lock_class_key *lock_class, + struct lock_class_key *request_class) { struct irq_desc *desc = irq_to_desc(irq); - if (desc) - lockdep_set_class(&desc->lock, class); + if (desc) { + lockdep_set_class(&desc->lock, lock_class); + lockdep_set_class(&desc->request_mutex, request_class); + } } #ifdef CONFIG_IRQ_PREFLOW_FASTEOI |