diff options
author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-10-25 10:06:04 +0200 |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-10-25 10:06:04 +0200 |
commit | 0fc4f78f44e6c6148cee32456f0d0023ec1c1fd8 (patch) | |
tree | 71c906207227dd8753a0191db9304035ec3471a4 /arch/x86/kernel/apic/vector.c | |
parent | 78010cd9736ec571796f4404524ed575b81238b9 (diff) | |
parent | 5481e27f6fd06b7cb902072e81d6b083db8155eb (diff) |
Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc
Backmerge latest drm-next to have a baseline for the
s/fence/dma_fence/ patch from Chris.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'arch/x86/kernel/apic/vector.c')
-rw-r--r-- | arch/x86/kernel/apic/vector.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index 6066d945c40e..5d30c5e42bb1 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -661,11 +661,28 @@ void irq_complete_move(struct irq_cfg *cfg) */ void irq_force_complete_move(struct irq_desc *desc) { - struct irq_data *irqdata = irq_desc_get_irq_data(desc); - struct apic_chip_data *data = apic_chip_data(irqdata); - struct irq_cfg *cfg = data ? &data->cfg : NULL; + struct irq_data *irqdata; + struct apic_chip_data *data; + struct irq_cfg *cfg; unsigned int cpu; + /* + * The function is called for all descriptors regardless of which + * irqdomain they belong to. For example if an IRQ is provided by + * an irq_chip as part of a GPIO driver, the chip data for that + * descriptor is specific to the irq_chip in question. + * + * Check first that the chip_data is what we expect + * (apic_chip_data) before touching it any further. + */ + irqdata = irq_domain_get_irq_data(x86_vector_domain, + irq_desc_get_irq(desc)); + if (!irqdata) + return; + + data = apic_chip_data(irqdata); + cfg = data ? &data->cfg : NULL; + if (!cfg) return; |