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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Frederic Barrat <fbarrat@linux.ibm.com>,
        Necip Fazil Yildiran <fazilyildiran@gmail.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.9 369/757] ocxl: fix kconfig dependency warning for OCXL
Date:   Tue, 27 Oct 2020 14:50:19 +0100
Message-Id: <20201027135507.881522759@linuxfoundation.org>
In-Reply-To: <20201027135450.497324313@linuxfoundation.org>
References: <20201027135450.497324313@linuxfoundation.org>
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From: Necip Fazil Yildiran <fazilyildiran@gmail.com>

[ Upstream commit 4b53a3c72116118d86fab4112277e1dc4edf273c ]

When OCXL is enabled and HOTPLUG_PCI is disabled, it results in the
following Kbuild warning:

WARNING: unmet direct dependencies detected for HOTPLUG_PCI_POWERNV
  Depends on [n]: PCI [=y] && HOTPLUG_PCI [=n] && PPC_POWERNV [=y] && EEH [=y]
  Selected by [y]:
  - OCXL [=y] && PPC_POWERNV [=y] && PCI [=y] && EEH [=y]

The reason is that OCXL selects HOTPLUG_PCI_POWERNV without depending on
or selecting HOTPLUG_PCI while HOTPLUG_PCI_POWERNV is subordinate to
HOTPLUG_PCI.

HOTPLUG_PCI_POWERNV is a visible symbol with a set of dependencies.
Selecting it will lead to overlooking its other dependencies as well.

Let OCXL depend on HOTPLUG_PCI_POWERNV instead to avoid Kbuild issues.

Fixes: 49ce94b8677c ("ocxl: Add PCI hotplug dependency to Kconfig")
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Necip Fazil Yildiran <fazilyildiran@gmail.com>
Link: https://lore.kernel.org/r/20200918094148.20525-1-fazilyildiran@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/misc/ocxl/Kconfig | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/misc/ocxl/Kconfig b/drivers/misc/ocxl/Kconfig
index 6551007a066ce..947294f6d7f44 100644
--- a/drivers/misc/ocxl/Kconfig
+++ b/drivers/misc/ocxl/Kconfig
@@ -9,9 +9,8 @@ config OCXL_BASE
 
 config OCXL
 	tristate "OpenCAPI coherent accelerator support"
-	depends on PPC_POWERNV && PCI && EEH
+	depends on PPC_POWERNV && PCI && EEH && HOTPLUG_PCI_POWERNV
 	select OCXL_BASE
-	select HOTPLUG_PCI_POWERNV
 	default m
 	help
 	  Select this option to enable the ocxl driver for Open
-- 
2.25.1