KVM: convert slots_lock to a mutex

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 7 insertions, 7 deletions

diff --git a/virt/kvm/coalesced_mmio.c b/virt/kvm/coalesced_mmio.c
index a736a93ca7b7..5de6594260cb 100644
--- a/virt/kvm/coalesced_mmio.c
+++ b/virt/kvm/coalesced_mmio.c
@@ -110,9 +110,9 @@ int kvm_coalesced_mmio_init(struct kvm *kvm)
         dev->kvm = kvm;
         kvm->coalesced_mmio_dev = dev;
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
         ret = kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, &dev->dev);
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
         if (ret < 0)
                 goto out_free_dev;
 
@@ -140,16 +140,16 @@ int kvm_vm_ioctl_register_coalesced_mmio(struct kvm *kvm,
         if (dev == NULL)
                 return -EINVAL;
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
         if (dev->nb_zones >= KVM_COALESCED_MMIO_ZONE_MAX) {
-                up_write(&kvm->slots_lock);
+                mutex_unlock(&kvm->slots_lock);
                 return -ENOBUFS;
         }
 
         dev->zone[dev->nb_zones] = *zone;
         dev->nb_zones++;
 
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
         return 0;
 }
 
@@ -163,7 +163,7 @@ int kvm_vm_ioctl_unregister_coalesced_mmio(struct kvm *kvm,
         if (dev == NULL)
                 return -EINVAL;
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
 
         i = dev->nb_zones;
         while(i) {
@@ -181,7 +181,7 @@ int kvm_vm_ioctl_unregister_coalesced_mmio(struct kvm *kvm,
                 i--;
         }
 
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
 
         return 0;
 }