From ef3f4e998240c33a9a424d5c1dbb045f2b919d43 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Mon, 14 Dec 2015 22:39:36 +0200 Subject: [PATCH] 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 Signed-off-by: Tomi Valkeinen --- 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, -- 2.20.1