From 11c57c3ba94da74c3446924260e34e0b1950b5d7 Mon Sep 17 00:00:00 2001
From: Julian Braha <julianbraha@gmail.com>
Date: Mon, 17 Jan 2022 05:09:40 +0100
Subject: [PATCH] ARM: 9178/1: fix unmet dependency on BITREVERSE for HAVE_ARCH_BITREVERSE
Git-commit: 11c57c3ba94da74c3446924260e34e0b1950b5d7
Patch-mainline: v5.17-rc7
References: git-fixes
Resending this to properly add it to the patch tracker - thanks for letting
me know, Arnd :)
When ARM is enabled, and BITREVERSE is disabled,
Kbuild gives the following warning:
Warning: unmet direct dependencies detected for HAVE_ARCH_BITREVERSE Depends on [n]: BITREVERSE [=n] Selected by [y]: - ARM [=y] && (CPU_32v7M [=n] || CPU_32v7 [=y]) && !CPU_32v6 [=n]
This is because ARM selects HAVE_ARCH_BITREVERSE
without selecting BITREVERSE, despite
HAVE_ARCH_BITREVERSE depending on BITREVERSE.
This unmet dependency bug was found by Kismet,
a static analysis tool for Kconfig. Please advise if this
is not the appropriate solution.
Signed-off-by: Julian Braha <julianbraha@gmail.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
lib/Kconfig | 1 -
1 file changed, 1 deletion(-)
diff --git a/lib/Kconfig b/lib/Kconfig
index 5e7165e6a346..fa4b10322efc 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -45,7 +45,6 @@ config BITREVERSE
config HAVE_ARCH_BITREVERSE
bool
default n
- depends on BITREVERSE
help
This option enables the use of hardware bit-reversal instructions on
architectures which support such operations.
--
2.31.1