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authorLinus Walleij <linus.walleij@linaro.org>2019-02-17 21:59:33 +0100
committerLinus Walleij <linus.walleij@linaro.org>2019-02-17 21:59:33 +0100
commit8fab3d713ca36bf4ad4dadec0bf38f5e70b8999d (patch)
tree18cdadced0870584ceffa02eed47f4c86da8263c /drivers/virtio/virtio_ring.c
parent760a160e8b899f5ebcab99da17feebbe40ec42f1 (diff)
parent68b7587baabfa42ca5625b709691358fee51b9d8 (diff)
Merge tag 'gpio-v5.1-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio updates for v5.1 - support for a new variant of pca953x - documentation fix from Wolfram - some tegra186 name changes - two minor fixes for madera and altera-a10sr
Diffstat (limited to 'drivers/virtio/virtio_ring.c')
-rw-r--r--drivers/virtio/virtio_ring.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index cd7e755484e3..a0b07c331255 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -152,7 +152,12 @@ struct vring_virtqueue {
/* Available for packed ring */
struct {
/* Actual memory layout for this queue. */
- struct vring_packed vring;
+ struct {
+ unsigned int num;
+ struct vring_packed_desc *desc;
+ struct vring_packed_desc_event *driver;
+ struct vring_packed_desc_event *device;
+ } vring;
/* Driver ring wrap counter. */
bool avail_wrap_counter;
@@ -1609,6 +1614,9 @@ static struct virtqueue *vring_create_virtqueue_packed(
!context;
vq->event = virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX);
+ if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM))
+ vq->weak_barriers = false;
+
vq->packed.ring_dma_addr = ring_dma_addr;
vq->packed.driver_event_dma_addr = driver_event_dma_addr;
vq->packed.device_event_dma_addr = device_event_dma_addr;
@@ -2079,6 +2087,9 @@ struct virtqueue *__vring_new_virtqueue(unsigned int index,
!context;
vq->event = virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX);
+ if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM))
+ vq->weak_barriers = false;
+
vq->split.queue_dma_addr = 0;
vq->split.queue_size_in_bytes = 0;
@@ -2213,6 +2224,8 @@ void vring_transport_features(struct virtio_device *vdev)
break;
case VIRTIO_F_RING_PACKED:
break;
+ case VIRTIO_F_ORDER_PLATFORM:
+ break;
default:
/* We don't understand this bit. */
__virtio_clear_bit(vdev, i);