virtio: don't allocate vqs when names[i] = NULL

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commit a229989d97 upstream.

Some vqs may not need to be allocated when their related feature bits
are disabled. So callers may pass in such vqs with "names = NULL".
Then we skip such vq allocations.

Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 86a559787e ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Wei Wang 2018-12-28 10:26:26 +08:00 • committed by Greg Kroah-Hartman

parent 871858ab00

commit 1210dfc9dc

4 changed files with 30 additions and 9 deletions

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9

drivers/misc/mic/vop/vop_main.c

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9

drivers/remoteproc/remoteproc_virtio.c

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12

drivers/s390/virtio/virtio_ccw.c

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9

drivers/virtio/virtio_mmio.c

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