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Simple PCIe FMC carrier SPEC
Commit bc6bcc7e authored by Federico Vaga's avatar Federico Vaga
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improve comment about ONESHOT choice 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent c8f09936
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kernel/spec-irq.c
View file @ bc6bcc7e
......@@ -336,12 +336,13 @@ static irqreturn_t spec_irq_handler(int irq, void *arg)
return spec_irq_sw_handler(irq, spec);
/*
* Do not listen to new interrupts while handling the current GPIO.
* Do not listen to new interrupts while handling the current GPIOs.
* This may take a while since the chain behind each GPIO can be long.
* If the IRQ behind is level, we do not want this IRQ handeler to be
* called continuously.
* Just to play safe, let's disable interrupts. Within the thread we will
* re-enable them when we are ready.
* called continuously. But on the other hand we do not want other
* devices sharing the same IRQ to wait for us; just to play safe,
* let's disable interrupts. Within the thread we will re-enable them
* when we are ready (like IRQF_ONESHOT).
*/
gennum_mask_val(spec, GNINT_STAT_GPIO, 0, GNINT_CFG(0));
......
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