linux-kernel - [PATCH 1/2] KVM: Return '0' directly when there's no task to yield to

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Message-ID: <20240802200136.329973-2-seanjc@google.com>
Date: Fri,  2 Aug 2024 13:01:35 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
	Paolo Bonzini <pbonzini@...hat.com>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev, 
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Sean Christopherson <seanjc@...gle.com>, Steve Rutherford <srutherford@...gle.com>
Subject: [PATCH 1/2] KVM: Return '0' directly when there's no task to yield to

Do "return 0" instead of initializing and returning a local variable in
kvm_vcpu_yield_to(), e.g. so that it's more obvious what the function
returns if there is no task.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 virt/kvm/kvm_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d0788d0a72cc..91048a7ad3be 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3932,7 +3932,7 @@ int kvm_vcpu_yield_to(struct kvm_vcpu *target)
 {
 	struct pid *pid;
 	struct task_struct *task = NULL;
-	int ret = 0;
+	int ret;
 
 	rcu_read_lock();
 	pid = rcu_dereference(target->pid);
@@ -3940,7 +3940,7 @@ int kvm_vcpu_yield_to(struct kvm_vcpu *target)
 		task = get_pid_task(pid, PIDTYPE_PID);
 	rcu_read_unlock();
 	if (!task)
-		return ret;
+		return 0;
 	ret = yield_to(task, 1);
 	put_task_struct(task);
 
-- 
2.46.0.rc2.264.g509ed76dc8-goog