[PATCH 4/4] drm: Constify the pretty-print functions

7 Jun 2013

From: Ville Syrjälä ville.syrjala@linux.intel.com
The structures and strings involved with various pretty-print functions
aren't meant to be modified, so make them all const. The exception is
drm_connector_enum_list which does get modified in drm_connector_init().
While at it move the drm_get_connector_status_name() prototype from
drmP.h to drm_crtc.h where it belongs.
Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com
---
 drivers/gpu/drm/drm_crtc.c | 30 +++++++++++++++---------------
 include/drm/drmP.h         |  1 -
 include/drm/drm_crtc.h     | 17 +++++++++--------
 3 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 079996a..44c3421 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -92,7 +92,7 @@ EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
/* Avoid boilerplate.  I'm tired of typing. */
 #define DRM_ENUM_NAME_FN(fnname, list)				\
-	char *fnname(int val)					\
+	const char *fnname(int val)				\
    {							\
    	int i;						\
    	for (i = 0; i < ARRAY_SIZE(list); i++) {	\
@@ -105,7 +105,7 @@ EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
 /*
  * Global properties
  */
-static struct drm_prop_enum_list drm_dpms_enum_list[] =
+static const struct drm_prop_enum_list drm_dpms_enum_list[] =
 {	{ DRM_MODE_DPMS_ON, "On" },
    { DRM_MODE_DPMS_STANDBY, "Standby" },
    { DRM_MODE_DPMS_SUSPEND, "Suspend" },
@@ -117,7 +117,7 @@ DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
 /*
  * Optional properties
  */
-static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
+static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
 {
    { DRM_MODE_SCALE_NONE, "None" },
    { DRM_MODE_SCALE_FULLSCREEN, "Full" },
@@ -125,7 +125,7 @@ static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
    { DRM_MODE_SCALE_ASPECT, "Full aspect" },
 };
-static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
+static const struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
 {
    { DRM_MODE_DITHERING_OFF, "Off" },
    { DRM_MODE_DITHERING_ON, "On" },
@@ -135,7 +135,7 @@ static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
 /*
  * Non-global properties, but "required" for certain connectors.
  */
-static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
+static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
 {
    { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
    { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
@@ -144,7 +144,7 @@ static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
-static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
+static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
 {
    { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
    { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
@@ -154,7 +154,7 @@ static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
    	 drm_dvi_i_subconnector_enum_list)
-static struct drm_prop_enum_list drm_tv_select_enum_list[] =
+static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
 {
    { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
    { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
@@ -165,7 +165,7 @@ static struct drm_prop_enum_list drm_tv_select_enum_list[] =
DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
-static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
+static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 {
    { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
    { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
@@ -177,7 +177,7 @@ static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
    	 drm_tv_subconnector_enum_list)
-static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
+static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
    { DRM_MODE_DIRTY_OFF,      "Off"      },
    { DRM_MODE_DIRTY_ON,       "On"       },
    { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
@@ -185,7 +185,7 @@ static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
struct drm_conn_prop_enum_list {
    int type;
-	char *name;
+	const char *name;
    int count;
 };
@@ -211,7 +211,7 @@ static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
    { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
 };
-static struct drm_prop_enum_list drm_encoder_enum_list[] =
+static const struct drm_prop_enum_list drm_encoder_enum_list[] =
 {	{ DRM_MODE_ENCODER_NONE, "None" },
    { DRM_MODE_ENCODER_DAC, "DAC" },
    { DRM_MODE_ENCODER_TMDS, "TMDS" },
@@ -220,7 +220,7 @@ static struct drm_prop_enum_list drm_encoder_enum_list[] =
    { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
 };
-char *drm_get_encoder_name(struct drm_encoder *encoder)
+const char *drm_get_encoder_name(const struct drm_encoder *encoder)
 {
    static char buf[32];
@@ -231,7 +231,7 @@ char *drm_get_encoder_name(struct drm_encoder *encoder)
 }
 EXPORT_SYMBOL(drm_get_encoder_name);
-char *drm_get_connector_name(struct drm_connector *connector)
+const char *drm_get_connector_name(const struct drm_connector *connector)
 {
    static char buf[32];
@@ -242,7 +242,7 @@ char *drm_get_connector_name(struct drm_connector *connector)
 }
 EXPORT_SYMBOL(drm_get_connector_name);
-char *drm_get_connector_status_name(enum drm_connector_status status)
+const char *drm_get_connector_status_name(enum drm_connector_status status)
 {
    if (status == connector_status_connected)
    	return "connected";
@@ -258,7 +258,7 @@ static char printable_char(int c)
    return isascii(c) && isprint(c) ? c : '?';
 }
-char *drm_get_format_name(uint32_t format)
+const char *drm_get_format_name(uint32_t format)
 {
    static char buf[32];
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index b06f5af..e931a65 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1598,7 +1598,6 @@ extern void drm_sysfs_destroy(void);
 extern int drm_sysfs_device_add(struct drm_minor *minor);
 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
 extern void drm_sysfs_device_remove(struct drm_minor *minor);
-extern char *drm_get_connector_status_name(enum drm_connector_status status);
 extern int drm_sysfs_connector_add(struct drm_connector *connector);
 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 2cbbfd4..53c33e2 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -897,12 +897,13 @@ extern void drm_plane_cleanup(struct drm_plane *plane);
extern void drm_encoder_cleanup(struct drm_encoder *encoder);
-extern char *drm_get_connector_name(struct drm_connector *connector);
-extern char *drm_get_dpms_name(int val);
-extern char *drm_get_dvi_i_subconnector_name(int val);
-extern char *drm_get_dvi_i_select_name(int val);
-extern char *drm_get_tv_subconnector_name(int val);
-extern char *drm_get_tv_select_name(int val);
+extern const char *drm_get_connector_name(const struct drm_connector *connector);
+extern const char *drm_get_connector_status_name(enum drm_connector_status status);
+extern const char *drm_get_dpms_name(int val);
+extern const char *drm_get_dvi_i_subconnector_name(int val);
+extern const char *drm_get_dvi_i_select_name(int val);
+extern const char *drm_get_tv_subconnector_name(int val);
+extern const char *drm_get_tv_select_name(int val);
 extern void drm_fb_release(struct drm_file *file_priv);
 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
 extern bool drm_probe_ddc(struct i2c_adapter *adapter);
@@ -994,7 +995,7 @@ extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats
 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
 extern int drm_mode_create_dithering_property(struct drm_device *dev);
 extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
-extern char *drm_get_encoder_name(struct drm_encoder *encoder);
+extern const char *drm_get_encoder_name(const struct drm_encoder *encoder);
extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
    				     struct drm_encoder *encoder);
@@ -1094,6 +1095,6 @@ extern int drm_format_num_planes(uint32_t format);
 extern int drm_format_plane_cpp(uint32_t format, int plane);
 extern int drm_format_horz_chroma_subsampling(uint32_t format);
 extern int drm_format_vert_chroma_subsampling(uint32_t format);
-extern char *drm_get_format_name(uint32_t format);
+extern const char *drm_get_format_name(uint32_t format);
#endif /* __DRM_CRTC_H__ */
-- 
1.8.1.5


    

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[PATCH 4/4] drm: Constify the pretty-print functions