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authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2016-09-08 12:30:01 +0200
committerSean Paul <seanpaul@chromium.org>2016-09-12 10:32:49 -0400
commitf92f053bb60924297afb8a1bd9166712c0fe5e88 (patch)
tree36757ced97dcccda57022260ccc53c96e9945f8a
parentd25a4cbba4b9da7c2d674b2f8ecf84af1b24988e (diff)
drm: Move property validation to a helper, v2.
Property lifetimes are equal to the device lifetime, so the separate drm_property_find is not needed. The pointer can be retrieved from the properties member, which saves us some locking and a extra lookup. The lifetime for properties is until the device is destroyed, which happens late in the device unload path. kms_atomic is also testing for invalid properties which returns -ENOENT, to be consistent return -ENOENT for valid properties that don't appear on the object property list. Changes since v1: - Return -ENOENT for invalid properties to make kms_atomic pass. - Change commit message slightly to take this into account. Testcase: kms_atomic Testcase: kms_properties Fixes: 4e9951d96093 ("drm/atomic: Reject properties not part of the object.") Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/599c7fa8-b6fd-a42b-c619-a9e4a9c5c244@linux.intel.com
-rw-r--r--drivers/gpu/drm/drm_atomic.c13
-rw-r--r--drivers/gpu/drm/drm_crtc_internal.h2
-rw-r--r--drivers/gpu/drm/drm_mode_object.c31
3 files changed, 20 insertions, 26 deletions
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index a5126e5c05ee..904d29c012ad 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1609,7 +1609,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
struct drm_crtc_state *crtc_state;
unsigned plane_mask;
int ret = 0;
- unsigned int i, j, k;
+ unsigned int i, j;
/* disallow for drivers not supporting atomic: */
if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
@@ -1691,16 +1691,7 @@ retry:
goto out;
}
- for (k = 0; k < obj->properties->count; k++)
- if (obj->properties->properties[k]->base.id == prop_id)
- break;
-
- if (k == obj->properties->count) {
- ret = -EINVAL;
- goto out;
- }
-
- prop = drm_property_find(dev, prop_id);
+ prop = drm_mode_obj_find_prop_id(obj, prop_id);
if (!prop) {
drm_mode_object_unreference(obj);
ret = -ENOENT;
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index a3622644bccf..444e609078cc 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -115,6 +115,8 @@ int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
uint32_t __user *prop_ptr,
uint64_t __user *prop_values,
uint32_t *arg_count_props);
+struct drm_property *drm_mode_obj_find_prop_id(struct drm_mode_object *obj,
+ uint32_t prop_id);
/* IOCTL */
diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
index 6edda8382a4c..9f17085b1fdd 100644
--- a/drivers/gpu/drm/drm_mode_object.c
+++ b/drivers/gpu/drm/drm_mode_object.c
@@ -372,14 +372,25 @@ out:
return ret;
}
+struct drm_property *drm_mode_obj_find_prop_id(struct drm_mode_object *obj,
+ uint32_t prop_id)
+{
+ int i;
+
+ for (i = 0; i < obj->properties->count; i++)
+ if (obj->properties->properties[i]->base.id == prop_id)
+ return obj->properties->properties[i];
+
+ return NULL;
+}
+
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_set_property *arg = data;
struct drm_mode_object *arg_obj;
- struct drm_mode_object *prop_obj;
struct drm_property *property;
- int i, ret = -EINVAL;
+ int ret = -EINVAL;
struct drm_mode_object *ref;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
@@ -392,23 +403,13 @@ int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
ret = -ENOENT;
goto out;
}
- if (!arg_obj->properties)
- goto out_unref;
-
- for (i = 0; i < arg_obj->properties->count; i++)
- if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
- break;
- if (i == arg_obj->properties->count)
+ if (!arg_obj->properties)
goto out_unref;
- prop_obj = drm_mode_object_find(dev, arg->prop_id,
- DRM_MODE_OBJECT_PROPERTY);
- if (!prop_obj) {
- ret = -ENOENT;
+ property = drm_mode_obj_find_prop_id(arg_obj, arg->prop_id);
+ if (!property)
goto out_unref;
- }
- property = obj_to_property(prop_obj);
if (!drm_property_change_valid_get(property, arg->value, &ref))
goto out_unref;