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-rw-r--r--drivers/virtio/virtio.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 0a5b54034d4b..236081afe9a2 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -239,6 +239,17 @@ 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