Hi Alban,
On 16/09/16 00:02, Alban Browaeys wrote:
> Le mercredi 14 septembre 2016 à 21:25 +0200, Geert Uytterhoeven a
> écrit :
>> JFYI, with v4.8-rc6 I'm seeing
>>
>> genirq: Setting trigger mode 0 for irq 11 failed
>> (txx9_irq_set_type+0x0/0xb8)
>>
>> on rbtx4927. This did not happen with v4.8-rc3.
>
>
> txx9_irq_set_type receives a type IRQ_TYPE_NONE from the call to
> __irq_set_trigger added in:
> 1e12c4a939 ("genirq: Correctly configure the trigger on chained interrupts")
>
>
> This patch is a regression fix for :
>
> Desc: irqdomain: Don't set type when mapping an IRQ breaks nexus7 gpio buttons
> Repo: 2016-07-30 https://marc.info/?l=linux-kernel&m=146985356305280&w=2
>
> I am seeing this on arm odroid u2 devicetree :
> genirq: Setting trigger mode 0 for irq 16 failed (gic_set_type+0x0/0x64)
Passing IRQ_TYPE_NONE to a cascading interrupt is risky at best...
Can you point me to the various DTs and their failing interrupts?
Also, can you please give the following patch a go and let me know
if that fixes the issue (I'm interested in the potential warning here).
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 6373890..8422779 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -820,6 +820,8 @@ __irq_do_set_handler(struct irq_desc *desc, irq_flow_handler_t handle,
desc->name = name;
if (handle != handle_bad_irq && is_chained) {
+ unsigned int type = irqd_get_trigger_type(&desc->irq_data);
+
/*
* We're about to start this interrupt immediately,
* hence the need to set the trigger configuration.
@@ -828,8 +830,10 @@ __irq_do_set_handler(struct irq_desc *desc, irq_flow_handler_t handle,
* chained interrupt. Reset it immediately because we
* do know better.
*/
- __irq_set_trigger(desc, irqd_get_trigger_type(&desc->irq_data));
- desc->handle_irq = handle;
+ if (!(WARN_ON(type == IRQ_TYPE_NONE))) {
+ __irq_set_trigger(desc, type);
+ desc->handle_irq = handle;
+ }
irq_settings_set_noprobe(desc);
irq_settings_set_norequest(desc);
Thanks,
M.
--
Jazz is not dead. It just smells funny...
