KVM: remove long -> void *user -> long cast

kvm_dev_ioctl casts the arg value to void __user *, just to recast it
again to long. This seems unnecessary.

According to objdump the binary code on x86 is unchanged by this patch.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d4eae6a..b6a5949 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1179,7 +1179,6 @@ static int kvm_dev_ioctl_create_vm(void)
 static long kvm_dev_ioctl(struct file *filp,
                          unsigned int ioctl, unsigned long arg)
 {
-       void __user *argp = (void __user *)arg;
        long r = -EINVAL;
 
        switch (ioctl) {
@@ -1196,7 +1195,7 @@ static long kvm_dev_ioctl(struct file *filp,
                r = kvm_dev_ioctl_create_vm();
                break;
        case KVM_CHECK_EXTENSION:
-               r = kvm_dev_ioctl_check_extension((long)argp);
+               r = kvm_dev_ioctl_check_extension(arg);
                break;
        case KVM_GET_VCPU_MMAP_SIZE:
                r = -EINVAL;