4.13-stable review patch. If anyone has any objections, please let me know.
------------------ From: Lionel Landwerlin <[email protected]> commit 7277f755048da562eb2489becacd38d0d05e1e06 upstream. 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 <[email protected]> Fixes: eec688e1420 ("drm/i915: Add i915 perf infrastructure") Reviewed-by: Chris Wilson <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] (cherry picked from commit 191f896085cf3b5d85920d58a759da4eea141721) Signed-off-by: Rodrigo Vivi <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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 @@ -2480,6 +2480,10 @@ 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, };
