diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/850-v5.17-0007-PCI-aardvark-Mask-all-interrupts-when-unbinding-driv.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/850-v5.17-0007-PCI-aardvark-Mask-all-interrupts-when-unbinding-driv.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/850-v5.17-0007-PCI-aardvark-Mask-all-interrupts-when-unbinding-driv.patch b/target/linux/generic/backport-5.15/850-v5.17-0007-PCI-aardvark-Mask-all-interrupts-when-unbinding-driv.patch new file mode 100644 index 0000000000..7add045cab --- /dev/null +++ b/target/linux/generic/backport-5.15/850-v5.17-0007-PCI-aardvark-Mask-all-interrupts-when-unbinding-driv.patch @@ -0,0 +1,48 @@ +From 13bcdf07cb2ecff5d45d2c141df2539b15211448 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Tue, 30 Nov 2021 18:29:09 +0100 +Subject: [PATCH] PCI: aardvark: Mask all interrupts when unbinding driver +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +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> +--- + drivers/pci/controller/pci-aardvark.c | 21 +++++++++++++++++++++ + 1 file changed, 21 insertions(+) + +--- a/drivers/pci/controller/pci-aardvark.c ++++ b/drivers/pci/controller/pci-aardvark.c +@@ -1710,6 +1710,27 @@ static int advk_pcie_remove(struct platf + val &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); + advk_writel(pcie, val, PCIE_CORE_CMD_STATUS_REG); + ++ /* Disable MSI */ ++ val = advk_readl(pcie, PCIE_CORE_CTRL2_REG); ++ val &= ~PCIE_CORE_CTRL2_MSI_ENABLE; ++ advk_writel(pcie, val, PCIE_CORE_CTRL2_REG); ++ ++ /* Clear MSI address */ ++ advk_writel(pcie, 0, PCIE_MSI_ADDR_LOW_REG); ++ advk_writel(pcie, 0, PCIE_MSI_ADDR_HIGH_REG); ++ ++ /* Mask all interrupts */ ++ advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG); ++ advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_MASK_REG); ++ advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_MASK_REG); ++ advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_MASK_REG); ++ ++ /* Clear all interrupts */ ++ advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_STATUS_REG); ++ advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_REG); ++ advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_REG); ++ advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG); ++ + /* Remove IRQ domains */ + advk_pcie_remove_msi_irq_domain(pcie); + advk_pcie_remove_irq_domain(pcie); |