From b33394ba5c0974a578c24b2fecbb91a984da5e09 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 25 Aug 2017 22:34:05 +0200 Subject: [PATCH] genirq/proc: Avoid uninitalized variable warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit kernel/irq/proc.c: In function ‘show_irq_affinity’: include/linux/cpumask.h:24:29: warning: ‘mask’ may be used uninitialized in this function [-Wmaybe-uninitialized] #define cpumask_bits(maskp) ((maskp)->bits) gcc is silly, but admittedly it can't know that this won't be called with anything else than the enumerated constants. Shut up the warning by creating a default clause. Fixes: 6bc6d4abd22e ("genirq/proc: Use the the accessor to report the effective affinity Signed-off-by: Thomas Gleixner --- kernel/irq/proc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index 9f62f9a1a5e9..6376b4a598d3 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -63,9 +63,9 @@ static int show_irq_affinity(int type, struct seq_file *m) #ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK mask = irq_data_get_effective_affinity_mask(&desc->irq_data); break; -#else - return -EINVAL; #endif + default: + return -EINVAL; } switch (type) {