linux-kernel - [PATCH] MIPS: BCM47XX: fix kconfig dependency bug for BCM47XX

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Message-Id: <20201102213400.356591-1-fazilyildiran@gmail.com>
Date:   Tue,  3 Nov 2020 00:34:01 +0300
From:   Necip Fazil Yildiran <fazilyildiran@...il.com>
To:     zajec5@...il.com
Cc:     hauke@...ke-m.de, ralf@...ux-mips.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, paul@...zz.com, jeho@...utexas.edu,
        Necip Fazil Yildiran <fazilyildiran@...il.com>
Subject: [PATCH] MIPS: BCM47XX: fix kconfig dependency bug for BCM47XX_BCMA

When BCM47XX_BCMA is enabled and BCMA_DRIVER_PCI is disabled, it results
in the following Kbuild warning:

WARNING: unmet direct dependencies detected for BCMA_DRIVER_PCI_HOSTMODE
  Depends on [n]: MIPS [=y] && BCMA_DRIVER_PCI [=n] && PCI_DRIVERS_LEGACY [=y] && BCMA [=y]=y
  Selected by [y]:
  - BCM47XX_BCMA [=y] && BCM47XX [=y] && PCI [=y]

The reason is that BCM47XX_BCMA selects BCMA_DRIVER_PCI_HOSTMODE without
depending on or selecting BCMA_DRIVER_PCI while BCMA_DRIVER_PCI_HOSTMODE
depends on BCMA_DRIVER_PCI. This can also fail building the kernel.

Honor the kconfig dependency to remove unmet direct dependency warnings
and avoid any potential build failures.

Fixes: c1d1c5d4213e ("bcm47xx: add support for bcma bus")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209879
Signed-off-by: Necip Fazil Yildiran <fazilyildiran@...il.com>
---
 arch/mips/bcm47xx/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/bcm47xx/Kconfig b/arch/mips/bcm47xx/Kconfig
index 6889f74e06f5..490bb6da74b7 100644
--- a/arch/mips/bcm47xx/Kconfig
+++ b/arch/mips/bcm47xx/Kconfig
@@ -27,6 +27,7 @@ config BCM47XX_BCMA
 	select BCMA
 	select BCMA_HOST_SOC
 	select BCMA_DRIVER_MIPS
+	select BCMA_DRIVER_PCI if PCI
 	select BCMA_DRIVER_PCI_HOSTMODE if PCI
 	select BCMA_DRIVER_GPIO
 	default y
-- 
2.25.1