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mt76: mt7615: rework IRQ handling to prepare for MSI support

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With MSI interrupts, IRQs must not be enabled from within the IRQ handler,
because that can lead to lost events.
Defer IRQ processing to a tasklet, which is also responsible for enabling
IRQs (to avoid race conditions against the handler)

Co-developed-by: Soul Huang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2020-04-09 19:54:25 +02:00
parent 8fb1cd20a7
commit 05b23d7478
4 changed files with 29 additions and 14 deletions
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mmio.c
+2 -1
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@@ -73,7 +73,8 @@ void mt76_set_irq_mask(struct mt76_dev *dev, u32 addr,
spin_lock_irqsave(&dev->mmio.irq_lock, flags);
dev->mmio.irqmask &= ~clear;
dev->mmio.irqmask |= set;
mt76_mmio_wr(dev, addr, dev->mmio.irqmask);
if (addr)
mt76_mmio_wr(dev, addr, dev->mmio.irqmask);
spin_unlock_irqrestore(&dev->mmio.irq_lock, flags);
}
EXPORT_SYMBOL_GPL(mt76_set_irq_mask);