Piteball/android_kernel_google_msm
1
0
Fork 0
mirror of https://github.com/followmsi/android_kernel_google_msm.git synced 2024-11-06 23:17:41 +00:00
Code Issues Projects Releases Wiki Activity

genirq: Allow shared oneshot interrupts

Browse source 
Support ONESHOT on shared interrupts, if all drivers agree on it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110223234956.483640430@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-23 23:52:16 +00:00
parent b5faba21a6
commit 9d591edd02
1 changed files with 4 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
kernel/irq/manage.c
View file

@ -824,10 +824,6 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
rand_initialize_irq(irq); rand_initialize_irq(irq);
} }
/* Oneshot interrupts are not allowed with shared */
if ((new->flags & IRQF_ONESHOT) && (new->flags & IRQF_SHARED))
return -EINVAL;
/* /*
* Check whether the interrupt nests into another interrupt * Check whether the interrupt nests into another interrupt
* thread. * thread.
@ -881,10 +877,12 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
* Can't share interrupts unless both agree to and are * Can't share interrupts unless both agree to and are
* the same type (level, edge, polarity). So both flag * the same type (level, edge, polarity). So both flag
* fields must have IRQF_SHARED set and the bits which * fields must have IRQF_SHARED set and the bits which
* set the trigger type must match. * set the trigger type must match. Also all must
* agree on ONESHOT.
*/ */
if (!((old->flags & new->flags) & IRQF_SHARED) || if (!((old->flags & new->flags) & IRQF_SHARED) ||
((old->flags ^ new->flags) & IRQF_TRIGGER_MASK)) { ((old->flags ^ new->flags) & IRQF_TRIGGER_MASK) ||
((old->flags ^ new->flags) & IRQF_ONESHOT)) {
old_name = old->name; old_name = old->name;
goto mismatch; goto mismatch;
} }