[08/13] arm/arm64: xen: avoid gcc-4.4 warning

Message ID	20161216105634.235457-9-arnd@arndb.de
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Headers	show Delivered-To: patch@linaro.org Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; From: Arnd Bergmann <arnd@arndb.de> To: linux-arch@vger.kernel.org Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@vger.kernel.org, Russell King <rmk+kernel@armlinux.org.uk>, Andrew Morton <akpm@linux-foundation.org>, kernel-build-reports@lists.linaro.org, kvmarm@lists.cs.columbia.edu, Arnd Bergmann <arnd@arndb.de> Subject: [PATCH 08/13] arm/arm64: xen: avoid gcc-4.4 warning Date: Fri, 16 Dec 2016 11:56:29 +0100 Message-Id: <20161216105634.235457-9-arnd@arndb.de> In-Reply-To: <20161216105634.235457-1-arnd@arndb.de> References: <20161216105634.235457-1-arnd@arndb.de> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk
Series	[01/13,HACK] gcc-4.5: avoid link errors for unused function pointers \| expand [01/13,HACK] gcc-4.5: avoid link errors for unused function pointers [02/13] KVM: arm: fix gcc-4.5 build [03/13] ARM: div64: fix building with gcc-4.5 and lower [04/13] vfio-pci: use 32-bit comparisons for register address for gcc-4.5 [05/13] clk: pxa: fix gcc-4.4 build [06/13] ARM: atomic: fix gcc-4.4 build [07/13] watchdog: kempld: fix gcc-4.3 build [08/13] arm/arm64: xen: avoid gcc-4.4 warning [09/13] ARM: mark cmpxchg and xchg __always_inline for gcc-4.3 [10/13] asm-generic: mark cmpxchg as __always_inline for gcc-4.3 [11/13] fs: fix unsigned enum warning with gcc-4.2 [12/13] KVM: arm: avoid binary number literals for gcc-4.2 [13/13] ARM: avoid 'Q' asm constraint for gcc-4.1 and earlier

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20161216105634.235457-9-arnd@arndb.de

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From: Arnd Bergmann <arnd@arndb.de>
To: linux-arch@vger.kernel.org
Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@vger.kernel.org,
	Russell King <rmk+kernel@armlinux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>,
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	kvmarm@lists.cs.columbia.edu, Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH 08/13] arm/arm64: xen: avoid gcc-4.4 warning
Date: Fri, 16 Dec 2016 11:56:29 +0100
Message-Id: <20161216105634.235457-9-arnd@arndb.de>
In-Reply-To: <20161216105634.235457-1-arnd@arndb.de>
References: <20161216105634.235457-1-arnd@arndb.de>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Series

[01/13,HACK] gcc-4.5: avoid link errors for unused function pointers | expand

Commit Message

Arnd Bergmann Dec. 16, 2016, 10:56 a.m. UTC

Ancient gcc doesn't know about __builtin_unreachable(), causing
lots of instances of a harmless warning:

include/xen/arm/page.h: In function 'arbitrary_virt_to_machine':
include/xen/arm/page.h:85: warning: no return statement in function returning non-void

Adding a return statement doesn't change the behavior here, but
shuts up that warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

---
 include/xen/arm/page.h | 1 +
 1 file changed, 1 insertion(+)

-- 
2.9.0

diff --git a/include/xen/arm/page.h b/include/xen/arm/page.h
index 415dbc6e43fd..2485013e3c6f 100644
--- a/include/xen/arm/page.h
+++ b/include/xen/arm/page.h
@@ -82,6 +82,7 @@  static inline unsigned long bfn_to_pfn(unsigned long bfn)
 static inline xmaddr_t arbitrary_virt_to_machine(void *vaddr)
 {
 	BUG();
+	return XMADDR(0);
 }
 
 /* TODO: this shouldn't be here but it is because the frontend drivers

[08/13] arm/arm64: xen: avoid gcc-4.4 warning

Commit Message

Patch