From: Lucas Stach <l.stach@pengutronix.de>
Date: Fri, 20 Oct 2017 17:46:55 +0200
Subject: drm/etnaviv: short-circuit perfmon ioctls
Git-commit: 330b52bd9bba1d66028772dfe08c053a34c5069a
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The feature implementation isn't stable yet. Reject any attempt to use
the IOCTLs for now. This keeps most of the code in place, so we can stabilize
it in-tree, but keeps userspace from using the feature for now.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_drv.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -459,6 +459,9 @@ static int etnaviv_ioctl_pm_query_dom(st
 	struct drm_etnaviv_pm_domain *args = data;
 	struct etnaviv_gpu *gpu;
 
+	/* reject as long as the feature isn't stable */
+	return -EINVAL;
+
 	if (args->pipe >= ETNA_MAX_PIPES)
 		return -EINVAL;
 
@@ -476,6 +479,9 @@ static int etnaviv_ioctl_pm_query_sig(st
 	struct drm_etnaviv_pm_signal *args = data;
 	struct etnaviv_gpu *gpu;
 
+	/* reject as long as the feature isn't stable */
+	return -EINVAL;
+
 	if (args->pipe >= ETNA_MAX_PIPES)
 		return -EINVAL;