linux-kernel - [PATCH v2] ppc: Fix build error with CONFIG

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Date:	Mon, 18 Aug 2014 17:13:41 -0400
From:	Pranith Kumar <bobby.prani@...il.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	linuxppc-dev@...ts.ozlabs.org (open list:LINUX FOR POWERPC...),
	linux-kernel@...r.kernel.org (open list)
Cc:	geert@...ux-m68k.org, Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH v2] ppc: Fix build error with CONFIG_PCI=n

Fix ppc 32 build failure as reported here:

http://kisskb.ellerman.id.au/kisskb/buildresult/11663513/

The error is as follows:

arch/powerpc/include/asm/floppy.h:142:20: error: 'isa_bridge_pcidev' undeclared
(first use in this function)

This is happening since floppy.o is enabled by BLK_DEV_FD which depends on
ARCH_MAY_HAVE_PC_FDC which is in-turn enabled if PPC_PSERIES=n. 

The following commit changes the dependency so that ARCH_MAY_HAVE_PC_FDC is
dependent exclusively on PCI since otherwise it will not compile.

Signed-off-by: Pranith Kumar <bobby.prani@...il.com>
Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
CC: Andrew Morton <akpm@...ux-foundation.org>
---
 arch/powerpc/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a577609f..9c1aa77 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -182,7 +182,7 @@ config SCHED_OMIT_FRAME_POINTER
 
 config ARCH_MAY_HAVE_PC_FDC
 	bool
-	default !PPC_PSERIES || PCI
+	default PCI
 
 config PPC_OF
 	def_bool y
-- 
1.9.1

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