On 08/05/2019 02:20, Cédric Le Goater wrote: > There is no need to test for the device pointer validity when releasing > a KVM device. The file descriptor should identify it safely. > > Signed-off-by: Cédric Le Goater <clg@xxxxxxxx> > --- > > Fixes http://patchwork.ozlabs.org/patch/1087506/ > https://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc.git/commit/?h=kvm-ppc-next&id=2bde9b3ec8bdf60788e9e2ce8c07a2f8d6003dbd Usually suggested way is: [fstn1-p1 kernel]$ git log -1 --format='Fixes: %h ("%s")' 2bde9b3ec8bd Fixes: 2bde9b3ec8bd ("KVM: Introduce a 'release' method for KVM devices") Anyway, Reviewed-by: Alexey Kardashevskiy <aik@xxxxxxxxx> > > virt/kvm/kvm_main.c | 6 ------ > 1 file changed, 6 deletions(-) > > diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c > index 161830ec0aa5..ac15b8fd8399 100644 > --- a/virt/kvm/kvm_main.c > +++ b/virt/kvm/kvm_main.c > @@ -2939,12 +2939,6 @@ static int kvm_device_release(struct inode *inode, struct file *filp) > struct kvm_device *dev = filp->private_data; > struct kvm *kvm = dev->kvm; > > - if (!dev) > - return -ENODEV; > - > - if (dev->kvm != kvm) > - return -EPERM; > - > if (dev->ops->release) { > mutex_lock(&kvm->lock); > list_del(&dev->vm_node); > -- Alexey
