[PATCH 1/2] x86/speculation: add cpu_show_gds() prototype

From: Arnd Bergmann <arnd@kernel.org>
To: x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Josh Poimboeuf <jpoimboe@kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Daniel Sneddon <daniel.sneddon@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
	Arnd Bergmann <arnd@arndb.de>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] x86/speculation: add cpu_show_gds() prototype
Date: Wed,  9 Aug 2023 15:04:59 +0200	[thread overview]
Message-ID: <20230809130530.1913368-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

The newly added function has two definitions but no prototypes:

drivers/base/cpu.c:605:16: error: no previous prototype for 'cpu_show_gds' [-Werror=missing-prototypes]

Add a declaration next to the other ones for this file to avoid the
warning.

Fixes: 8974eb588283b ("x86/speculation: Add Gather Data Sampling mitigation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 include/linux/cpu.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 9d43b734170d6..0abd60a7987b6 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -73,6 +73,8 @@ extern ssize_t cpu_show_retbleed(struct device *dev,
 				 struct device_attribute *attr, char *buf);
 extern ssize_t cpu_show_spec_rstack_overflow(struct device *dev,
 					     struct device_attribute *attr, char *buf);
+extern ssize_t cpu_show_gds(struct device *dev,
+			    struct device_attribute *attr, char *buf);
 
 extern __printf(4, 5)
 struct device *cpu_device_create(struct device *parent, void *drvdata,
-- 
2.39.2

