diff options
Diffstat (limited to 'drivers/virtio/virtio.c')
| -rw-r--r-- | drivers/virtio/virtio.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index bf7ff3934d7f..4230b4e72f4a 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -222,6 +222,17 @@ static int virtio_dev_probe(struct device *_d) driver_features_legacy = driver_features; } + /* + * Some devices detect legacy solely via F_VERSION_1. Write + * F_VERSION_1 to force LE config space accesses before FEATURES_OK for + * these when needed. + */ + if (drv->validate && !virtio_legacy_is_little_endian() + && device_features & BIT_ULL(VIRTIO_F_VERSION_1)) { + dev->features = BIT_ULL(VIRTIO_F_VERSION_1); + dev->config->finalize_features(dev); + } + if (device_features & (1ULL << VIRTIO_F_VERSION_1)) dev->features = driver_features & device_features; else |