linux-kernel - [PATCH] PCI: dwc: exynos: add back MSI dependency

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Message-Id: <20201204165841.3845589-1-arnd@kernel.org>
Date:   Fri,  4 Dec 2020 17:58:34 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Rob Herring <robh@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        Dilip Kota <eswara.kota@...ux.intel.com>,
        Vidya Sagar <vidyas@...dia.com>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Alex Dewar <alex.dewar90@...il.com>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] PCI: dwc: exynos: add back MSI dependency

From: Arnd Bergmann <arnd@...db.de>

While the exynos driver does not always need MSI, the generic
deisgnware host code it uses fails to build without it:

WARNING: unmet direct dependencies detected for PCIE_DW_HOST
  Depends on [n]: PCI [=y] && PCI_MSI_IRQ_DOMAIN [=n]
  Selected by [y]:
  - PCI_EXYNOS [=y] && PCI [=y] && (ARCH_EXYNOS [=n] || COMPILE_TEST [=y])
drivers/pci/controller/dwc/pcie-designware-host.c:247:19: error: implicit declaration of function 'pci_msi_create_irq_domain' [-Werror,-Wimplicit-function-declaration]
        pp->msi_domain = pci_msi_create_irq_domain(fwnode,
                         ^

Add back the dependency that all other designware controllers have.

Fixes: f0a6743028f9 ("PCI: dwc: exynos: Rework the driver to support Exynos5433 variant")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/pci/controller/dwc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index 020101b58155..e403bb2eeb4c 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -85,6 +85,7 @@ config PCIE_DW_PLAT_EP
 config PCI_EXYNOS
 	tristate "Samsung Exynos PCIe controller"
 	depends on ARCH_EXYNOS || COMPILE_TEST
+	depends on PCI && PCI_MSI_IRQ_DOMAIN
 	select PCIE_DW_HOST
 	help
 	  Enables support for the PCIe controller in the Samsung Exynos SoCs
-- 
2.27.0