diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-08-06 15:27:09 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-08-06 15:27:09 +0300 |
| commit | 06059d5090118b047c5b6a621c8b57a068f7ce2c (patch) | |
| tree | 47431df1c04c02dfb7ecea479321142c56ad17cc /kernel/irq/resend.c | |
| parent | 80aa93128653c5f2502053c0d9740b336d975667 (diff) | |
| parent | 8c10342cb48f3140d9abeadcfd2fa6625d447282 (diff) | |
| download | linux-06059d5090118b047c5b6a621c8b57a068f7ce2c.tar.xz | |
Merge tag 'topic/drm-misc-2015-07-28' into drm-intel-next-queued
We need a few core drm patches to be able to merge Maarten's series to
convert DPMS over to atomic.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'kernel/irq/resend.c')
| -rw-r--r-- | kernel/irq/resend.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index 9065107f083e..7a5237a1bce5 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -75,13 +75,21 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq) !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) { #ifdef CONFIG_HARDIRQS_SW_RESEND /* - * If the interrupt has a parent irq and runs - * in the thread context of the parent irq, - * retrigger the parent. + * If the interrupt is running in the thread + * context of the parent irq we need to be + * careful, because we cannot trigger it + * directly. */ - if (desc->parent_irq && - irq_settings_is_nested_thread(desc)) + if (irq_settings_is_nested_thread(desc)) { + /* + * If the parent_irq is valid, we + * retrigger the parent, otherwise we + * do nothing. + */ + if (!desc->parent_irq) + return; irq = desc->parent_irq; + } /* Set it pending and activate the softirq: */ set_bit(irq, irqs_resend); tasklet_schedule(&resend_tasklet); |