linux-kernel - [PATCH 08/11] PCI: keystone: Add ks_pcie_disable_error

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Message-ID: <20250903124505.365913-9-s-vadapalli@ti.com>
Date: Wed, 3 Sep 2025 18:14:49 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <lpieralisi@...nel.org>, <kwilczynski@...nel.org>, <mani@...nel.org>,
        <robh@...nel.org>, <bhelgaas@...gle.com>, <jingoohan1@...il.com>,
        <fan.ni@...sung.com>, <quic_wenbyao@...cinc.com>,
        <namcao@...utronix.de>, <mayank.rana@....qualcomm.com>,
        <thippeswamy.havalige@....com>, <quic_schintav@...cinc.com>,
        <shradha.t@...sung.com>, <inochiama@...il.com>, <cassel@...nel.org>,
        <kishon@...nel.org>, <18255117159@....com>, <rongqianfeng@...o.com>,
        <jirislaby@...nel.org>
CC: <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: [PATCH 08/11] PCI: keystone: Add ks_pcie_disable_error_irq() helper for cleanup

Introduce the helper function ks_pcie_disable_error_irq() to disable the
error interrupts that have been enabled by ks_pcie_enable_error_irq().

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
 drivers/pci/controller/dwc/pci-keystone.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index f432818f6802..bb93559f6468 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -329,6 +329,15 @@ static void ks_pcie_handle_intx_irq(struct keystone_pcie *ks_pcie,
 	ks_pcie_app_writel(ks_pcie, IRQ_EOI, offset);
 }
 
+static void ks_pcie_disable_error_irq(struct keystone_pcie *ks_pcie)
+{
+	u32 val;
+
+	val = ks_pcie_app_readl(ks_pcie, ERR_IRQ_ENABLE_SET);
+	val &= ~ERR_IRQ_ALL;
+	ks_pcie_app_writel(ks_pcie, ERR_IRQ_ENABLE_SET, val);
+}
+
 static void ks_pcie_enable_error_irq(struct keystone_pcie *ks_pcie)
 {
 	ks_pcie_app_writel(ks_pcie, ERR_IRQ_ENABLE_SET, ERR_IRQ_ALL);
-- 
2.43.0