From ef3f4e998240c33a9a424d5c1dbb045f2b919d43 Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Mon, 14 Dec 2015 22:39:36 +0200
Subject: drm: omapdrm: gem: Mask out private flags passed from userspace
The 8 high order bits of the buffer flags are reserved for internal use.
Mask them out from the flags passed by userspace.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
drivers/gpu/drm/omapdrm/omap_drv.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 1e80b0243f9c..cc7905566228 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -547,14 +547,19 @@ static int ioctl_set_param(struct drm_device *dev, void *data,
return 0;
}
+#define OMAP_BO_USER_MASK 0x00ffffff /* flags settable by userspace */
+
static int ioctl_gem_new(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_omap_gem_new *args = data;
+ u32 flags = args->flags & OMAP_BO_USER_MASK;
+
VERB("%p:%p: size=0x%08x, flags=%08x", dev, file_priv,
- args->size.bytes, args->flags);
- return omap_gem_new_handle(dev, file_priv, args->size,
- args->flags, &args->handle);
+ args->size.bytes, flags);
+
+ return omap_gem_new_handle(dev, file_priv, args->size, flags,
+ &args->handle);
}
static int ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
--
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