diff options
Diffstat (limited to 'target/linux/generic/pending-5.10/850-0004-PCI-aardvark-Rewrite-IRQ-code-to-chained-IRQ-handler.patch')
| -rw-r--r-- | target/linux/generic/pending-5.10/850-0004-PCI-aardvark-Rewrite-IRQ-code-to-chained-IRQ-handler.patch | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/target/linux/generic/pending-5.10/850-0004-PCI-aardvark-Rewrite-IRQ-code-to-chained-IRQ-handler.patch b/target/linux/generic/pending-5.10/850-0004-PCI-aardvark-Rewrite-IRQ-code-to-chained-IRQ-handler.patch deleted file mode 100644 index 426ba94b98..0000000000 --- a/target/linux/generic/pending-5.10/850-0004-PCI-aardvark-Rewrite-IRQ-code-to-chained-IRQ-handler.patch +++ /dev/null @@ -1,125 +0,0 @@ -From 0cd5141d1866afb23286fe90cd846441fe7aeb39 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> -Date: Sat, 27 Mar 2021 14:44:11 +0100 -Subject: [PATCH] PCI: aardvark: Rewrite IRQ code to chained IRQ handler -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Rewrite the code to use irq_set_chained_handler_and_data() handler with -chained_irq_enter() and chained_irq_exit() processing instead of using -devm_request_irq(). - -advk_pcie_irq_handler() reads IRQ status bits and calls other functions -based on which bits are set. These functions then read its own IRQ status -bits and calls other aardvark functions based on these bits. Finally -generic_handle_domain_irq() with translated linux IRQ numbers are called. - -Signed-off-by: Pali Rohár <pali@kernel.org> -Signed-off-by: Marek Behún <kabel@kernel.org> ---- - drivers/pci/controller/pci-aardvark.c | 48 +++++++++++++++------------ - 1 file changed, 26 insertions(+), 22 deletions(-) - ---- a/drivers/pci/controller/pci-aardvark.c -+++ b/drivers/pci/controller/pci-aardvark.c -@@ -275,6 +275,7 @@ struct advk_pcie { - u32 actions; - } wins[OB_WIN_COUNT]; - u8 wins_count; -+ int irq; - struct irq_domain *irq_domain; - struct irq_chip irq_chip; - raw_spinlock_t irq_lock; -@@ -1441,21 +1442,26 @@ static void advk_pcie_handle_int(struct - } - } - --static irqreturn_t advk_pcie_irq_handler(int irq, void *arg) -+static void advk_pcie_irq_handler(struct irq_desc *desc) - { -- struct advk_pcie *pcie = arg; -- u32 status; -+ struct advk_pcie *pcie = irq_desc_get_handler_data(desc); -+ struct irq_chip *chip = irq_desc_get_chip(desc); -+ u32 val, mask, status; - -- status = advk_readl(pcie, HOST_CTRL_INT_STATUS_REG); -- if (!(status & PCIE_IRQ_CORE_INT)) -- return IRQ_NONE; -+ chained_irq_enter(chip, desc); - -- advk_pcie_handle_int(pcie); -+ val = advk_readl(pcie, HOST_CTRL_INT_STATUS_REG); -+ mask = advk_readl(pcie, HOST_CTRL_INT_MASK_REG); -+ status = val & ((~mask) & PCIE_IRQ_ALL_MASK); - -- /* Clear interrupt */ -- advk_writel(pcie, PCIE_IRQ_CORE_INT, HOST_CTRL_INT_STATUS_REG); -+ if (status & PCIE_IRQ_CORE_INT) { -+ advk_pcie_handle_int(pcie); - -- return IRQ_HANDLED; -+ /* Clear interrupt */ -+ advk_writel(pcie, PCIE_IRQ_CORE_INT, HOST_CTRL_INT_STATUS_REG); -+ } -+ -+ chained_irq_exit(chip, desc); - } - - static void __maybe_unused advk_pcie_disable_phy(struct advk_pcie *pcie) -@@ -1522,7 +1528,7 @@ static int advk_pcie_probe(struct platfo - struct advk_pcie *pcie; - struct pci_host_bridge *bridge; - struct resource_entry *entry; -- int ret, irq; -+ int ret; - - bridge = devm_pci_alloc_host_bridge(dev, sizeof(struct advk_pcie)); - if (!bridge) -@@ -1610,17 +1616,9 @@ static int advk_pcie_probe(struct platfo - if (IS_ERR(pcie->base)) - return PTR_ERR(pcie->base); - -- irq = platform_get_irq(pdev, 0); -- if (irq < 0) -- return irq; -- -- ret = devm_request_irq(dev, irq, advk_pcie_irq_handler, -- IRQF_SHARED | IRQF_NO_THREAD, "advk-pcie", -- pcie); -- if (ret) { -- dev_err(dev, "Failed to register interrupt\n"); -- return ret; -- } -+ pcie->irq = platform_get_irq(pdev, 0); -+ if (pcie->irq < 0) -+ return pcie->irq; - - pcie->reset_gpio = devm_gpiod_get_from_of_node(dev, dev->of_node, - "reset-gpios", 0, -@@ -1669,11 +1667,14 @@ static int advk_pcie_probe(struct platfo - return ret; - } - -+ irq_set_chained_handler_and_data(pcie->irq, advk_pcie_irq_handler, pcie); -+ - bridge->sysdata = pcie; - bridge->ops = &advk_pcie_ops; - - ret = pci_host_probe(bridge); - if (ret < 0) { -+ irq_set_chained_handler_and_data(pcie->irq, NULL, NULL); - advk_pcie_remove_msi_irq_domain(pcie); - advk_pcie_remove_irq_domain(pcie); - return ret; -@@ -1721,6 +1722,9 @@ static int advk_pcie_remove(struct platf - advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_REG); - advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG); - -+ /* Remove IRQ handler */ -+ irq_set_chained_handler_and_data(pcie->irq, NULL, NULL); -+ - /* Remove IRQ domains */ - advk_pcie_remove_msi_irq_domain(pcie); - advk_pcie_remove_irq_domain(pcie); |