linux-kernel - [PATCH linux-next] arch/x86/xen/time.c: fix bugon.cocci warnings

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Date:   Sun, 22 Aug 2021 19:13:53 -0700
From:   CGEL <cgel.zte@...il.com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc:     Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H . Peter Anvin" <hpa@...or.com>,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        Jing Yangyang <jing.yangyang@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] arch/x86/xen/time.c: fix bugon.cocci warnings

From: Jing Yangyang <jing.yangyang@....com.cn>

Use BUG_ON instead of a if condition followed by BUG.

Generated by: scripts/coccinelle/misc/bugon.cocci

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Jing Yangyang <jing.yangyang@....com.cn>
---
 arch/x86/xen/time.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index d9c945e..6e29b69 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -210,8 +210,7 @@ static int xen_timerop_set_next_event(unsigned long delta,
 {
 	WARN_ON(!clockevent_state_oneshot(evt));
 
-	if (HYPERVISOR_set_timer_op(get_abs_timeout(delta)) < 0)
-		BUG();
+	BUG_ON(HYPERVISOR_set_timer_op(get_abs_timeout(delta)) < 0);
 
 	/* We may have missed the deadline, but there's no real way of
 	   knowing for sure.  If the event was in the past, then we'll
@@ -241,11 +240,10 @@ static int xen_vcpuop_shutdown(struct clock_event_device *evt)
 {
 	int cpu = smp_processor_id();
 
-	if (HYPERVISOR_vcpu_op(VCPUOP_stop_singleshot_timer, xen_vcpu_nr(cpu),
+	BUG_ON(HYPERVISOR_vcpu_op(VCPUOP_stop_singleshot_timer, xen_vcpu_nr(cpu),
 			       NULL) ||
-	    HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, xen_vcpu_nr(cpu),
-			       NULL))
-		BUG();
+		HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, xen_vcpu_nr(cpu),
+			       NULL));
 
 	return 0;
 }
@@ -254,9 +252,8 @@ static int xen_vcpuop_set_oneshot(struct clock_event_device *evt)
 {
 	int cpu = smp_processor_id();
 
-	if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, xen_vcpu_nr(cpu),
-			       NULL))
-		BUG();
+	BUG_ON(HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, xen_vcpu_nr(cpu),
+			       NULL));
 
 	return 0;
 }
@@ -373,9 +370,8 @@ void xen_timer_resume(void)
 		return;
 
 	for_each_online_cpu(cpu) {
-		if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer,
-				       xen_vcpu_nr(cpu), NULL))
-			BUG();
+		BUG_ON(HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer,
+				       xen_vcpu_nr(cpu), NULL));
 	}
 }
 
-- 
1.8.3.1