linux-kernel - [PATCH v2 2/3] staging: vme: Fix missing `depends on` at KConfig

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Message-ID: <aab0591ac73a54059621c722a63635d43a446fd2.1649721450.git.codeagain@codeagain.dev>
Date:   Tue, 12 Apr 2022 03:56:43 -0300
From:   Bruno Moreira-Guedes <codeagain@...eagain.dev>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Martyn Welch <martyn@...chs.me.uk>,
        Manohar Vanga <manohar.vanga@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        outreachy@...ts.linux.dev
Cc:     Bruno's Patch Watchbox <patch-reply@...eagain.dev>
Subject: [PATCH v2 2/3] staging: vme: Fix missing `depends on` at KConfig

Originally, the KConfig file for VME_USER
("drivers/staging/vme/devices/Kconfig") was sourced at
"drivers/vme/boards/KConfig". It misses a `depends on` line for VME_BUS,
which went unnoticeable for a menuconfig user who wouldn't be able to
select it through this interface without selecting the CONFIG_VME_BUS
option because it was nested on its menu.

A patch to move appropriately this driver to the "Staging" submenu[1],
however, unveiled this missing `depends on` line, since it moved the
`source` line for VME_USER's KConfig to somewhere else, allowing it to
be compiled without the support for VME_BRIDGE. While it compiles fine
and seems to initialize the driver fine[2], it seems to make no sense
having VME_USER without VME_BUS.

This patches addresses it by adding the VME_BUS to the `depends on` line
at "drivers/staging/vme/devices/Kconfig".

CHANGELOG:
v2:
- Added this patch to the patchset

REFERENCES AND NOTES
[1] First commit in this patch, originally submitted at
https://lore.kernel.org/linux-staging/3fbc5325e94b9ae0666a1f5a56a4e5372bfcea1d.camel@codeagain.dev/T/#t
[2] Tested both as module and as built-in.

Signed-off-by: Bruno Moreira-Guedes <codeagain@...eagain.dev>
---
 drivers/staging/vme/devices/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/vme/devices/Kconfig b/drivers/staging/vme/devices/Kconfig
index 5651bb16b28b..e8b4461bf27f 100644
--- a/drivers/staging/vme/devices/Kconfig
+++ b/drivers/staging/vme/devices/Kconfig
@@ -3,7 +3,7 @@ comment "VME Device Drivers"

 config VME_USER
 	tristate "VME user space access driver"
-	depends on STAGING
+	depends on STAGING && VME_BUS
 	help
 	  If you say Y here you want to be able to access a limited number of
 	  VME windows in a manner at least semi-compatible with the interface
-- 
2.35.1

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