25 lines
822 B
Diff
25 lines
822 B
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Fri, 4 Sep 2020 18:33:27 +0200
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Subject: [PATCH] pcie-mediatek: fix clearing interrupt status
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Clearing the status needs to happen after running the handler, otherwise
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we will get an extra spurious interrupt after the cause has been cleared
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/drivers/pci/controller/pcie-mediatek.c
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+++ b/drivers/pci/controller/pcie-mediatek.c
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@@ -615,10 +615,10 @@ static void mtk_pcie_intr_handler(struct
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if (status & INTX_MASK) {
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for_each_set_bit_from(bit, &status, PCI_NUM_INTX + INTX_SHIFT) {
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/* Clear the INTx */
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- writel(1 << bit, port->base + PCIE_INT_STATUS);
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virq = irq_find_mapping(port->irq_domain,
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bit - INTX_SHIFT);
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generic_handle_irq(virq);
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+ writel(1 << bit, port->base + PCIE_INT_STATUS);
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}
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}
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