diff options
Diffstat (limited to 'target/linux/generic/pending-5.15/850-0009-PCI-aardvark-Refactor-unmasking-summary-MSI-interrup.patch')
| -rw-r--r-- | target/linux/generic/pending-5.15/850-0009-PCI-aardvark-Refactor-unmasking-summary-MSI-interrup.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.15/850-0009-PCI-aardvark-Refactor-unmasking-summary-MSI-interrup.patch b/target/linux/generic/pending-5.15/850-0009-PCI-aardvark-Refactor-unmasking-summary-MSI-interrup.patch new file mode 100644 index 0000000000..6cdaddc51c --- /dev/null +++ b/target/linux/generic/pending-5.15/850-0009-PCI-aardvark-Refactor-unmasking-summary-MSI-interrup.patch @@ -0,0 +1,44 @@ +From 98feaf97bc64fc640a6c5b1394cd18fc7cd7dac8 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Sun, 28 Mar 2021 14:34:49 +0200 +Subject: [PATCH] PCI: aardvark: Refactor unmasking summary MSI interrupt +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Refactor the masking of ISR0/1 Sources and unmasking of summary MSI interrupt +so that it corresponds to the comments: +- first mask all ISR0/1 +- then unmask all MSIs +- then unmask summary MSI interrupt + +Signed-off-by: Pali Rohár <pali@kernel.org> +Signed-off-by: Marek Behún <kabel@kernel.org> +--- + drivers/pci/controller/pci-aardvark.c | 10 ++++++---- + 1 file changed, 6 insertions(+), 4 deletions(-) + +--- a/drivers/pci/controller/pci-aardvark.c ++++ b/drivers/pci/controller/pci-aardvark.c +@@ -578,15 +578,17 @@ static void advk_pcie_setup_hw(struct ad + advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG); + + /* Disable All ISR0/1 Sources */ +- reg = PCIE_ISR0_ALL_MASK; +- reg &= ~PCIE_ISR0_MSI_INT_PENDING; +- advk_writel(pcie, reg, PCIE_ISR0_MASK_REG); +- ++ advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_MASK_REG); + advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_MASK_REG); + + /* Unmask all MSIs */ + advk_writel(pcie, ~(u32)PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG); + ++ /* Unmask summary MSI interrupt */ ++ reg = advk_readl(pcie, PCIE_ISR0_MASK_REG); ++ reg &= ~PCIE_ISR0_MSI_INT_PENDING; ++ advk_writel(pcie, reg, PCIE_ISR0_MASK_REG); ++ + /* Enable summary interrupt for GIC SPI source */ + reg = PCIE_IRQ_ALL_MASK & (~PCIE_IRQ_ENABLE_INTS_MASK); + advk_writel(pcie, reg, HOST_CTRL_INT_MASK_REG); |