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PCI: aardvark: Mask all interrupts when unbinding driver
Ensure that no interrupt can be triggered after driver unbind. Link: https://lore.kernel.org/r/20211130172913.9727-8-kabel@kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
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@ -1709,6 +1709,27 @@ static int advk_pcie_remove(struct platform_device *pdev)
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val &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
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advk_writel(pcie, val, PCIE_CORE_CMD_STATUS_REG);
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/* Disable MSI */
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val = advk_readl(pcie, PCIE_CORE_CTRL2_REG);
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val &= ~PCIE_CORE_CTRL2_MSI_ENABLE;
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advk_writel(pcie, val, PCIE_CORE_CTRL2_REG);
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/* Clear MSI address */
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advk_writel(pcie, 0, PCIE_MSI_ADDR_LOW_REG);
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advk_writel(pcie, 0, PCIE_MSI_ADDR_HIGH_REG);
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/* Mask all interrupts */
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advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG);
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advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_MASK_REG);
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advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_MASK_REG);
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advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_MASK_REG);
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/* Clear all interrupts */
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advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_STATUS_REG);
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advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_REG);
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advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_REG);
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advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG);
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/* Remove IRQ domains */
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advk_pcie_remove_msi_irq_domain(pcie);
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advk_pcie_remove_irq_domain(pcie);
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