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openmptcprouter/root/target/linux/bcm27xx/patches-5.15/0337-PCI-brcmstb-Advertise-MSI-X-support.patch
2021-11-24 18:32:01 +01:00

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From 0fd01ebca05f72d33d630a868e9f6617503f6c08 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Thu, 3 Dec 2020 13:44:42 +0000
Subject: [PATCH 337/634] PCI: brcmstb: Advertise MSI-X support
Although the BRCMSTB PCIe interface doesn't technically support the
MSI-X spec, in practise it seems to work provided no more than 32
MSI-Xs are required. Add the required flag to the driver to allow
experimentation with devices that demand MSI-X support.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
drivers/pci/controller/pcie-brcmstb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index d26844f03e25..44f0ea66b60b 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -471,7 +471,8 @@ static struct irq_chip brcm_msi_irq_chip = {
static struct msi_domain_info brcm_msi_domain_info = {
/* Multi MSI is supported by the controller, but not by this driver */
- .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
+ .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
+ MSI_FLAG_PCI_MSIX),
.chip = &brcm_msi_irq_chip,
};
--
2.33.1