On 29/06/17 22:33, Thomas Gleixner wrote: > The irq_request/release_resources() callbacks are a problem on RT as they > are called under irq_desc->lock with interrupts disabled. > > Aside of that calling them under irq_desc->lock is conceptually wrong and > has a (hard to trigger and probably theoretical) issue in free_irq(). See > patch 4/5 for a detailed explanation. > > The series contains also a fix for the exynos gpio driver, which fiddles > with the irq masking in the resource callbacks, which is bogus and > potentially harmful. > > Finally it moves the irq timings deallocation out of the spin locked region. > > Thanks, > > tglx > --- > drivers/pinctrl/samsung/pinctrl-exynos.c | 4 -- > include/linux/irqdesc.h | 3 + > kernel/irq/irqdesc.c | 1 > kernel/irq/manage.c | 47 +++++++++++++++++++------------ > 4 files changed, 34 insertions(+), 21 deletions(-) For the series: Reviewed-by: Marc Zyngier <marc.zyngier at arm.com> M. -- Jazz is not dead. It just smells funny...
