linux-kernel - [PATCH] - drivers/kvm/* - remove ptr comparisons to 0

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Date:	Mon, 12 Nov 2007 20:06:51 -0800
From:	Joe Perches <joe@...ches.com>
To:	Avi Kivity <avi@...ranet.com>
Cc:	kvm-devel@...ts.sourceforge.net,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH] - drivers/kvm/* - remove ptr comparisons to 0

fix sparse warnings "Using plain integer as NULL pointer"

Signed-off-by: Joe Perches <joe@...ches.com>

---

 drivers/kvm/kvm.h      |    2 +-
 drivers/kvm/kvm_main.c |    3 ++-
 drivers/kvm/lapic.c    |    2 +-
 drivers/kvm/svm.c      |    2 +-
 4 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index 3b0bc4b..f572a81 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -433,7 +433,7 @@ static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
 
 static inline int irqchip_in_kernel(struct kvm *kvm)
 {
-	return pic_irqchip(kvm) != 0;
+	return pic_irqchip(kvm) != NULL;
 }
 
 struct descriptor_table {
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 07ae280..e06beaf 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -3535,7 +3535,8 @@ int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size,
 
 	/* A kmem cache lets us meet the alignment requirements of fx_save. */
 	kvm_vcpu_cache = kmem_cache_create("kvm_vcpu", vcpu_size,
-					   __alignof__(struct kvm_vcpu), 0, 0);
+					   __alignof__(struct kvm_vcpu),
+					   0, NULL);
 	if (!kvm_vcpu_cache) {
 		r = -ENOMEM;
 		goto out_free_4;
diff --git a/drivers/kvm/lapic.c b/drivers/kvm/lapic.c
index 238fcad..274b07e 100644
--- a/drivers/kvm/lapic.c
+++ b/drivers/kvm/lapic.c
@@ -771,7 +771,7 @@ void kvm_free_apic(struct kvm_lapic *apic)
 
 	if (apic->regs_page) {
 		__free_page(apic->regs_page);
-		apic->regs_page = 0;
+		apic->regs_page = NULL;
 	}
 
 	kfree(apic);
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 729f1cd..6c7c797 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -1282,7 +1282,7 @@ static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 		       exit_code);
 
 	if (exit_code >= ARRAY_SIZE(svm_exit_handlers)
-	    || svm_exit_handlers[exit_code] == 0) {
+	    || !svm_exit_handlers[exit_code]) {
 		kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
 		kvm_run->hw.hardware_exit_reason = exit_code;
 		return 0;


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