diff --git a/[refs] b/[refs]
index 8ea6f14f5126..11389aa71ac4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 791cfe2684a74ed7155254816ff9e89e6064277c
+refs/heads/master: f24d86f1a49505cdea56728b853a5d0a3f8e3d11
diff --git a/trunk/drivers/gpu/drm/radeon/atom.c b/trunk/drivers/gpu/drm/radeon/atom.c
index 8e421f644a54..05efb5b9f13e 100644
--- a/trunk/drivers/gpu/drm/radeon/atom.c
+++ b/trunk/drivers/gpu/drm/radeon/atom.c
@@ -112,6 +112,7 @@ static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
 			base += 3;
 			break;
 		case ATOM_IIO_WRITE:
+			(void)ctx->card->ioreg_read(ctx->card, CU16(base + 1));
 			ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp);
 			base += 3;
 			break;