This is a note to let you know that I've just added the patch titled
PCI: dwc: Move MSI interrupt setup into DWC common code
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-dwc-move-msi-interrupt-setup-into-dwc-common-cod.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7dfbd819eb0f2302460066fe9ce49e4fe8c6ce05
Author: Rob Herring <robh@xxxxxxxxxx>
Date: Thu Nov 5 15:11:51 2020 -0600
PCI: dwc: Move MSI interrupt setup into DWC common code
[ Upstream commit 5bcb1757e637a4f6d130f1f5106ce030516316b8 ]
Platforms using the built-in DWC MSI controller all have a dedicated
interrupt with "msi" name or at index 0, so let's move setting up the
interrupt to the common DWC code.
spear13xx and dra7xx are the 2 oddballs with muxed interrupts, so
we need to prevent configuring the MSI interrupt by setting msi_irq
to negative.
Link: https://lore.kernel.org/r/20201105211159.1814485-9-robh@xxxxxxxxxx
Tested-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Acked-by: Jingoo Han <jingoohan1@xxxxxxxxx>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Kukjin Kim <kgene@xxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Cc: Richard Zhu <hongxing.zhu@xxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: NXP Linux Team <linux-imx@xxxxxxx>
Cc: Yue Wang <yue.wang@xxxxxxxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxx>
Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Cc: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Cc: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
Cc: Jesper Nilsson <jesper.nilsson@xxxxxxxx>
Cc: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
Cc: Xiaowei Song <songxiaowei@xxxxxxxxxxxxx>
Cc: Binghui Wang <wangbinghui@xxxxxxxxxxxxx>
Cc: Stanimir Varbanov <svarbanov@xxxxxxxxxx>
Cc: Andy Gross <agross@xxxxxxxxxx>
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Cc: Pratyush Anand <pratyush.anand@xxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: Jonathan Hunter <jonathanh@xxxxxxxxxx>
Cc: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Cc: linux-samsung-soc@xxxxxxxxxxxxxxx
Cc: linux-amlogic@xxxxxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxx
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: linux-tegra@xxxxxxxxxxxxxxx
Stable-dep-of: 83a939f0fdc2 ("PCI: exynos: Don't discard .remove() callback")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 4d0c35a4aa598..6b75c68dddb56 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -489,6 +489,9 @@ static int __init dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx,
if (pp->irq < 0)
return pp->irq;
+ /* MSI IRQ is muxed */
+ pp->msi_irq = -ENODEV;
+
ret = dra7xx_pcie_init_irq_domain(pp);
if (ret < 0)
return ret;
diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index 242683cde04a5..7734394953e57 100644
--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -415,12 +415,6 @@ static int __init exynos_add_pcie_port(struct exynos_pcie *ep,
return ret;
}
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq(pdev, 0);
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &exynos_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 8117f2dad86c4..104341bfde180 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -858,12 +858,6 @@ static int imx6_add_pcie_port(struct imx6_pcie *imx6_pcie,
struct device *dev = &pdev->dev;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &imx6_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pci-meson.c b/drivers/pci/controller/dwc/pci-meson.c
index 1913dc2c8fa08..10d65b3093e4a 100644
--- a/drivers/pci/controller/dwc/pci-meson.c
+++ b/drivers/pci/controller/dwc/pci-meson.c
@@ -405,12 +405,6 @@ static int meson_add_pcie_port(struct meson_pcie *mp,
struct device *dev = &pdev->dev;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq(pdev, 0);
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &meson_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index 52ad7909cd0c0..a5239a58cee06 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -348,12 +348,6 @@ static int artpec6_add_pcie_port(struct artpec6_pcie *artpec6_pcie,
struct device *dev = pci->dev;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &artpec6_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 32d3af7c44917..401890f5c8ca8 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -373,13 +373,22 @@ int dw_pcie_host_init(struct pcie_port *pp)
}
if (!pp->ops->msi_host_init) {
+ if (!pp->msi_irq) {
+ pp->msi_irq = platform_get_irq_byname_optional(pdev, "msi");
+ if (pp->msi_irq < 0) {
+ pp->msi_irq = platform_get_irq(pdev, 0);
+ if (pp->msi_irq < 0)
+ return pp->msi_irq;
+ }
+ }
+
pp->msi_irq_chip = &dw_pci_msi_bottom_irq_chip;
ret = dw_pcie_allocate_domains(pp);
if (ret)
return ret;
- if (pp->msi_irq)
+ if (pp->msi_irq > 0)
irq_set_chained_handler_and_data(pp->msi_irq,
dw_chained_msi_isr,
pp);
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index 13fede1d41572..3da38ac6a87a0 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -116,12 +116,6 @@ static int dw_plat_add_pcie_port(struct dw_plat_pcie *dw_plat_pcie,
if (pp->irq < 0)
return pp->irq;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq(pdev, 0);
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->num_vectors = MAX_MSI_IRQS;
pp->ops = &dw_plat_pcie_host_ops;
diff --git a/drivers/pci/controller/dwc/pcie-histb.c b/drivers/pci/controller/dwc/pcie-histb.c
index afc1abbe49aa9..777e24902afbf 100644
--- a/drivers/pci/controller/dwc/pcie-histb.c
+++ b/drivers/pci/controller/dwc/pcie-histb.c
@@ -400,12 +400,6 @@ static int histb_pcie_probe(struct platform_device *pdev)
return PTR_ERR(hipcie->bus_reset);
}
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
hipcie->phy = devm_phy_get(dev, "phy");
if (IS_ERR(hipcie->phy)) {
dev_info(dev, "no pcie-phy found\n");
diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index 3042a23cf09a4..ba03dbca7885e 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -439,31 +439,9 @@ static const struct dw_pcie_host_ops kirin_pcie_host_ops = {
.host_init = kirin_pcie_host_init,
};
-static int kirin_pcie_add_msi(struct dw_pcie *pci,
- struct platform_device *pdev)
-{
- int irq;
-
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return irq;
-
- pci->pp.msi_irq = irq;
- }
-
- return 0;
-}
-
static int kirin_add_pcie_port(struct dw_pcie *pci,
struct platform_device *pdev)
{
- int ret;
-
- ret = kirin_pcie_add_msi(pci, pdev);
- if (ret)
- return ret;
-
pci->pp.ops = &kirin_pcie_host_ops;
return dw_pcie_host_init(&pci->pp);
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 150dd6fe7ba39..4f230f01a645e 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1416,14 +1416,6 @@ static int qcom_pcie_probe(struct platform_device *pdev)
pp->ops = &qcom_pcie_dw_ops;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0) {
- ret = pp->msi_irq;
- goto err_pm_runtime_put;
- }
- }
-
ret = phy_init(pcie->phy);
if (ret)
goto err_pm_runtime_put;
diff --git a/drivers/pci/controller/dwc/pcie-spear13xx.c b/drivers/pci/controller/dwc/pcie-spear13xx.c
index 1ed7e3501ff1c..800c34a60a334 100644
--- a/drivers/pci/controller/dwc/pcie-spear13xx.c
+++ b/drivers/pci/controller/dwc/pcie-spear13xx.c
@@ -185,6 +185,7 @@ static int spear13xx_add_pcie_port(struct spear13xx_pcie *spear13xx_pcie,
}
pp->ops = &spear13xx_pcie_host_ops;
+ pp->msi_irq = -ENODEV;
ret = dw_pcie_host_init(pp);
if (ret) {
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index a93b5dca110ec..8e67495be90f9 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1560,14 +1560,6 @@ static int tegra_pcie_config_rp(struct tegra_pcie_dw *pcie)
char *name;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = of_irq_get_byname(dev->of_node, "msi");
- if (!pp->msi_irq) {
- dev_err(dev, "Failed to get MSI interrupt\n");
- return -ENODEV;
- }
- }
-
pm_runtime_enable(dev);
ret = pm_runtime_get_sync(dev);
diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index 85bf170e93541..4620561da7a3e 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -335,12 +335,6 @@ static int uniphier_add_pcie_port(struct uniphier_pcie_priv *priv,
pp->ops = &uniphier_pcie_host_ops;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "Failed to initialize host (%d)\n", ret);
