[PATCH] x86/mce: Fix build warning after MSR-interface switch

[Juergen Gross]

The recent switch to 64-bit MSR interfaces introduced a build warning.

Fix it.

Fixes: cff219368bd0 ("x86/mce: Stop using 32-bit MSR interfaces")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202607031726.ZOwu4snu-lkp@xxxxxxxxx/
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
Said patch is in tip only right now, so this patch could either be added
on top or be folded into the original patch.
---
 arch/x86/kernel/cpu/mce/p5.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mce/p5.c b/arch/x86/kernel/cpu/mce/p5.c
index eb99f384d747..3c2b6cc918b1 100644
--- a/arch/x86/kernel/cpu/mce/p5.c
+++ b/arch/x86/kernel/cpu/mce/p5.c
@@ -44,7 +44,7 @@ noinstr void pentium_machine_check(struct pt_regs *regs)
 /* Set up machine check reporting for processors with Intel style MCE: */
 void intel_p5_mcheck_init(struct cpuinfo_x86 *c)
 {
-	u64 q;
+	u64 __maybe_unused q;
 
 	/* Default P5 to off as its often misconnected: */
 	if (!mce_p5_enabled)
-- 
2.54.0