tree 4391c372692bdc139411f68400ba950d47f852c2
parent 0d234daf7e0a3290a3a20c8087eefbd6335a5bd4
author Chen Gang <gang.chen.5i5j@gmail.com> 1407512279 +0800
committer Paolo Bonzini <pbonzini@redhat.com> 1408453948 +0200

virt/kvm/assigned-dev.c: Set 'dev->irq_source_id' to '-1' after free it

As a generic function, deassign_guest_irq() assumes it can be called
even if assign_guest_irq() is not be called successfully (which can be
triggered by ioctl from user mode, indirectly).

So for assign_guest_irq() failure process, need set 'dev->irq_source_id'
to -1 after free 'dev->irq_source_id', or deassign_guest_irq() may free
it again.

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>