KVM: PPC: BookE: Fix a sanity check

commit ac0e89bb4744d3882ccd275f2416d9ce22f4e1e7 upstream.

We use logical negate where bitwise negate was intended.  It means that
we never return -EINVAL here.

Fixes: ce11e48b7fdd ('KVM: PPC: E500: Add userspace debug stub support')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index fd5875179e5c0e6738a1e7867a75f05cbe1fa0c8..6d63cd67b09b689a9cc2322613bfcadf74bafd3d 100644 (file)
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -2033,7 +2033,7 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
                if (type == KVMPPC_DEBUG_NONE)
                        continue;
 
-               if (type & !(KVMPPC_DEBUG_WATCH_READ |
+               if (type & ~(KVMPPC_DEBUG_WATCH_READ |
                             KVMPPC_DEBUG_WATCH_WRITE |
                             KVMPPC_DEBUG_BREAKPOINT))
                        return -EINVAL;