linux-kernel - [PATCH] cpumask: guard cpumask_of

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Message-Id: <20200527134623.930247-1-arnd@arndb.de>
Date:   Wed, 27 May 2020 15:46:08 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Rusty Russell <rusty@...tcorp.com.au>,
        Guenter Roeck <linux@...ck-us.net>,
        Naveen Krishna Chatradhi <nchatrad@....com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Ingo Molnar <mingo@...hat.com>,
        Tony Luck <tony.luck@...el.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Richard Henderson <rth@...ddle.net>,
        linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] cpumask: guard cpumask_of_node() macro argument

drivers/hwmon/amd_energy.c:195:15: error: invalid operands to binary expression ('void' and 'int')
                                        (channel - data->nr_cpus));
                                        ~~~~~~~~~^~~~~~~~~~~~~~~~~
include/asm-generic/topology.h:51:42: note: expanded from macro 'cpumask_of_node'
    #define cpumask_of_node(node)       ((void)node, cpu_online_mask)
                                               ^~~~
include/linux/cpumask.h:618:72: note: expanded from macro 'cpumask_first_and'
 #define cpumask_first_and(src1p, src2p) cpumask_next_and(-1, (src1p), (src2p))
                                                                       ^~~~~

Fixes: f0b848ce6fe9 ("cpumask: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask")
Fixes: 8abee9566b7e ("hwmon: Add amd_energy driver to report energy counters")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 include/asm-generic/topology.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index 238873739550..5aa8705df87e 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -48,7 +48,7 @@
   #ifdef CONFIG_NEED_MULTIPLE_NODES
     #define cpumask_of_node(node)	((node) == 0 ? cpu_online_mask : cpu_none_mask)
   #else
-    #define cpumask_of_node(node)	((void)node, cpu_online_mask)
+    #define cpumask_of_node(node)	((void)(node), cpu_online_mask)
   #endif
 #endif
 #ifndef pcibus_to_node
-- 
2.26.2