- Make it clear that it's a negative errno (more in line with
everything else).
- Clean up the confusion around get_properties vs. getproperty ioctls:
One reads per-obj property values, the other reads property
metadata.
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/drm_crtc.c | 79 ++++++++++++++++++++++++----------------------
1 file changed, 41 insertions(+), 38 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 5c878f172365..8c550302a9ef 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1490,7 +1490,7 @@ EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
* connectors.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
{
@@ -1674,7 +1674,7 @@ static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
* the caller.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
static int drm_crtc_convert_umode(struct drm_display_mode *out,
const struct drm_mode_modeinfo *in)
@@ -1717,7 +1717,7 @@ static int drm_crtc_convert_umode(struct drm_display_mode *out,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getresources(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -1905,7 +1905,7 @@ out:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getcrtc(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -1966,7 +1966,7 @@ static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getconnector(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -2110,7 +2110,7 @@ out:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getencoder(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -2151,7 +2151,7 @@ int drm_mode_getencoder(struct drm_device *dev, void *data,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getplane_res(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -2212,7 +2212,7 @@ int drm_mode_getplane_res(struct drm_device *dev, void *data,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getplane(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -2386,7 +2386,7 @@ static int setplane_internal(struct drm_plane *plane,
* valid crtc).
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_setplane(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -2461,7 +2461,7 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
* interface. The only thing it adds is correct refcounting dance.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_set_config_internal(struct drm_mode_set *set)
{
@@ -2554,7 +2554,7 @@ EXPORT_SYMBOL(drm_crtc_check_viewport);
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_setcrtc(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -2717,7 +2717,7 @@ out:
* userspace wants to make use of these capabilities.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
struct drm_mode_cursor2 *req,
@@ -2865,7 +2865,7 @@ out:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_cursor_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -2892,7 +2892,7 @@ int drm_mode_cursor_ioctl(struct drm_device *dev,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_cursor2_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -2956,7 +2956,7 @@ EXPORT_SYMBOL(drm_mode_legacy_fb_format);
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_addfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -3161,7 +3161,7 @@ static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_addfb2(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -3189,7 +3189,7 @@ int drm_mode_addfb2(struct drm_device *dev,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_rmfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -3243,7 +3243,7 @@ fail_lookup:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -3304,7 +3304,7 @@ int drm_mode_getfb(struct drm_device *dev,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -3384,7 +3384,7 @@ out_err1:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
void drm_fb_release(struct drm_file *priv)
{
@@ -3818,17 +3818,20 @@ int drm_object_property_get_value(struct drm_mode_object *obj,
EXPORT_SYMBOL(drm_object_property_get_value);
/**
- * drm_mode_getproperty_ioctl - get the current value of a connector's property
+ * drm_mode_getproperty_ioctl - get the property metadata
* @dev: DRM device
* @data: ioctl data
* @file_priv: DRM file info
*
- * This function retrieves the current value for an connectors's property.
+ * This function retrieves the metadata for a given property, like the different
+ * possible values for an enum property or the limits for a range property.
+ *
+ * Blob properties are special
*
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getproperty_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -3981,7 +3984,7 @@ static void drm_property_destroy_blob(struct drm_device *dev,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_getblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -4026,7 +4029,7 @@ done:
* them more meaningful names.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_connector_set_path_property(struct drm_connector *connector,
const char *path)
@@ -4056,7 +4059,7 @@ EXPORT_SYMBOL(drm_mode_connector_set_path_property);
* connector's edid property.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_connector_update_edid_property(struct drm_connector *connector,
const struct edid *edid)
@@ -4153,7 +4156,7 @@ static bool drm_property_change_is_valid(struct drm_property *property,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -4236,7 +4239,7 @@ int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
/**
- * drm_mode_getproperty_ioctl - get the current value of a object's property
+ * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
* @dev: DRM device
* @data: ioctl data
* @file_priv: DRM file info
@@ -4248,7 +4251,7 @@ EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -4320,7 +4323,7 @@ out:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
@@ -4392,7 +4395,7 @@ out:
* possible_clones and possible_crtcs bitmasks.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder)
@@ -4419,7 +4422,7 @@ EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
* fixed gamma table size.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
int gamma_size)
@@ -4448,7 +4451,7 @@ EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_gamma_set_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -4520,7 +4523,7 @@ out:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_gamma_get_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -4586,7 +4589,7 @@ out:
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_page_flip_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -4752,7 +4755,7 @@ EXPORT_SYMBOL(drm_mode_config_reset);
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_create_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -4804,7 +4807,7 @@ int drm_mode_create_dumb_ioctl(struct drm_device *dev,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
@@ -4831,7 +4834,7 @@ int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
* Called by the user via ioctl.
*
* Returns:
- * Zero on success, errno on failure.
+ * Zero on success, negative errno on failure.
*/
int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
--
2.1.1
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