diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c
index f695a7e8c314585c8b0df8ab88f44d897986839b..7ff659dff11db6604762dd934f6560c29112bd7e 100644
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -171,12 +171,12 @@ static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj,
 	return 0;
 }
 
-static struct bin_attribute ring_buffer_bin_attr __ro_after_init = {
+static const struct bin_attribute ring_buffer_bin_attr = {
 	.attr = {
 		.name = "ring",
 		.mode = 0600,
-		/* size is set at init time */
 	},
+	.size = 2 * HV_RING_SIZE * PAGE_SIZE,
 	.mmap = hv_uio_ring_mmap,
 };