From 7277f755048da562eb2489becacd38d0d05e1e06 Mon Sep 17 00:00:00 2001
From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Date: Tue, 24 Oct 2017 16:27:28 +0100
Subject: [PATCH] drm/i915/perf: fix perf enable/disable ioctls with 32bits userspace
Git-commit: 7277f755048da562eb2489becacd38d0d05e1e06
Patch-mainline: v4.14-rc7
References: FATE#322643 bsc#1055900
No-fix: 191f896085cf3b5d85920d58a759da4eea141721
The compat callback was missing and triggered failures in 32bits
userspace when enabling/disable the perf stream. We don't require any
particular processing here as these ioctls don't take any argument.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: eec688e1420 ("drm/i915: Add i915 perf infrastructure")
Cc: linux-stable <stable@vger.kernel.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171024152728.4873-1-lionel.g.landwerlin@intel.com
(cherry picked from commit 191f896085cf3b5d85920d58a759da4eea141721)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/i915_perf.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -2537,6 +2537,10 @@ static const struct file_operations fops
.poll = i915_perf_poll,
.read = i915_perf_read,
.unlocked_ioctl = i915_perf_ioctl,
+ /* Our ioctl have no arguments, so it's safe to use the same function
+ * to handle 32bits compatibility.
+ */
+ .compat_ioctl = i915_perf_ioctl,
};