linux-kernel - [PATCH v2 4/4] irqchip/sg2042-msi: Set MSI_FLAG_MULTI_PCI

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Message-ID: <20250813232835.43458-5-inochiama@gmail.com>
Date: Thu, 14 Aug 2025 07:28:34 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Marc Zyngier <maz@...nel.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Shradha Gupta <shradhagupta@...ux.microsoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Inochi Amaoto <inochiama@...il.com>,
	Jonathan Cameron <Jonathan.Cameron@...ei.com>,
	Juergen Gross <jgross@...e.com>,
	Nicolin Chen <nicolinc@...dia.com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Chen Wang <unicorn_wang@...look.com>
Cc: linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org,
	Yixun Lan <dlan@...too.org>,
	Longbin Li <looong.bin@...il.com>
Subject: [PATCH v2 4/4] irqchip/sg2042-msi: Set MSI_FLAG_MULTI_PCI_MSI flags for SG2044

The MSI controller on SG2044 has the ability to allocate multiple
PCI MSI interrupts. So the PCIe controller driver can use this
feature if it also supports multiple PCI MSI interrupts.

Add MSI_FLAG_MULTI_PCI_MSI flag for the supported_flags of
SG2044 msi_parent_ops so the PCIe controller driver can use
this feature if it also supports this feature.

Signed-off-by: Inochi Amaoto <inochiama@...il.com>
---
 drivers/irqchip/irq-sg2042-msi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-sg2042-msi.c b/drivers/irqchip/irq-sg2042-msi.c
index 2fd4d94f9bd7..3b13dbbfdb51 100644
--- a/drivers/irqchip/irq-sg2042-msi.c
+++ b/drivers/irqchip/irq-sg2042-msi.c
@@ -212,6 +212,7 @@ static const struct msi_parent_ops sg2042_msi_parent_ops = {
 				   MSI_FLAG_PCI_MSI_STARTUP_PARENT)
 
 #define SG2044_MSI_FLAGS_SUPPORTED (MSI_GENERIC_FLAGS_MASK |		\
+				    MSI_FLAG_MULTI_PCI_MSI |		\
 				    MSI_FLAG_PCI_MSIX)
 
 static const struct msi_parent_ops sg2044_msi_parent_ops = {
-- 
2.50.1