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drm/panel: remove return value of function drm_panel_add

Browse Source 
The function "int drm_panel_add(struct drm_panel *panel)"
always returns 0, this return value is meaningless.
Also, there is no need to check return value which calls
"drm_panel_add and", error branch code will never run.

Signed-off-by: Bernard Zhao <bernard@vivo.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200801120216.8488-1-bernard@vivo.com
This commit is contained in:
Bernard Zhao 2020-08-01 20:02:13 +08:00 committed by Sam Ravnborg
parent 1a3fb59085
commit c3ee8c65f6
44 changed files with 82 additions and 111 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/drm_panel.c
View File

@ -70,16 +70,12 @@ EXPORT_SYMBOL(drm_panel_init);
*
* Add a panel to the global registry so that it can be looked up by display
* drivers.
*
* Return: 0 on success or a negative error code on failure.
*/
int drm_panel_add(struct drm_panel *panel)
void drm_panel_add(struct drm_panel *panel)
{
mutex_lock(&panel_lock);
list_add_tail(&panel->list, &panel_list);
mutex_unlock(&panel_lock);
return 0;
}
EXPORT_SYMBOL(drm_panel_add);

4
drivers/gpu/drm/panel/panel-arm-versatile.c
View File

@ -349,7 +349,9 @@ static int versatile_panel_probe(struct platform_device *pdev)
drm_panel_init(&vpanel->panel, dev, &versatile_panel_drm_funcs,
DRM_MODE_CONNECTOR_DPI);
return drm_panel_add(&vpanel->panel);
drm_panel_add(&vpanel->panel);
return 0;
}
static const struct of_device_id versatile_panel_match[] = {

6
drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c
View File

@ -315,11 +315,7 @@ static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi)
return ret;
}
ret = drm_panel_add(&ctx->panel);
if (ret < 0) {
dev_err(dev, "Failed to add panel: %d\n", ret);
return ret;
}
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {

4
drivers/gpu/drm/panel/panel-boe-himax8279d.c
View File

@ -895,7 +895,9 @@ static int panel_add(struct panel_info *pinfo)
if (ret)
return ret;
return drm_panel_add(&pinfo->base);
drm_panel_add(&pinfo->base);
return 0;
}
static int panel_probe(struct mipi_dsi_device *dsi)

4
drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
View File

@ -787,7 +787,9 @@ static int boe_panel_add(struct boe_panel *boe)
boe->base.funcs = &boe_panel_funcs;
boe->base.dev = &boe->dsi->dev;
return drm_panel_add(&boe->base);
drm_panel_add(&boe->base);
return 0;
}
static int boe_panel_probe(struct mipi_dsi_device *dsi)

4
drivers/gpu/drm/panel/panel-feixin-k101-im2ba02.c
View File

@ -477,9 +477,7 @@ static int k101_im2ba02_dsi_probe(struct mipi_dsi_device *dsi)
if (ret)
return ret;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
drm_panel_add(&ctx->panel);
dsi->mode_flags = MIPI_DSI_MODE_VIDEO;
dsi->format = MIPI_DSI_FMT_RGB888;

4
drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
View File

@ -224,9 +224,7 @@ static int feiyang_dsi_probe(struct mipi_dsi_device *dsi)
if (ret)
return ret;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
drm_panel_add(&ctx->panel);
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST;
dsi->format = MIPI_DSI_FMT_RGB888;

4
drivers/gpu/drm/panel/panel-ilitek-ili9322.c
View File

@ -892,7 +892,9 @@ static int ili9322_probe(struct spi_device *spi)
drm_panel_init(&ili->panel, dev, &ili9322_drm_funcs,
DRM_MODE_CONNECTOR_DPI);
return drm_panel_add(&ili->panel);
drm_panel_add(&ili->panel);
return 0;
}
static int ili9322_remove(struct spi_device *spi)

4
drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
View File

@ -446,9 +446,7 @@ static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
if (ret)
return ret;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
drm_panel_add(&ctx->panel);
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
dsi->format = MIPI_DSI_FMT_RGB888;

4
drivers/gpu/drm/panel/panel-innolux-p079zca.c
View File

@ -475,9 +475,7 @@ static int innolux_panel_add(struct mipi_dsi_device *dsi,
if (err)
return err;
err = drm_panel_add(&innolux->base);
if (err < 0)
return err;
drm_panel_add(&innolux->base);
mipi_dsi_set_drvdata(dsi, innolux);
innolux->link = dsi;

4
drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
View File

@ -440,9 +440,9 @@ static int jdi_panel_add(struct jdi_panel *jdi)
drm_panel_init(&jdi->base, &jdi->dsi->dev, &jdi_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_add(&jdi->base);
drm_panel_add(&jdi->base);
return ret;
return 0;
}
static void jdi_panel_del(struct jdi_panel *jdi)

4
drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
View File

@ -382,7 +382,9 @@ static int kingdisplay_panel_add(struct kingdisplay_panel *kingdisplay)
if (err)
return err;
return drm_panel_add(&kingdisplay->base);
drm_panel_add(&kingdisplay->base);
return 0;
}
static void kingdisplay_panel_del(struct kingdisplay_panel *kingdisplay)

4
drivers/gpu/drm/panel/panel-lg-lb035q02.c
View File

@ -198,7 +198,9 @@ static int lb035q02_probe(struct spi_device *spi)
drm_panel_init(&lcd->panel, &lcd->spi->dev, &lb035q02_funcs,
DRM_MODE_CONNECTOR_DPI);
return drm_panel_add(&lcd->panel);
drm_panel_add(&lcd->panel);
return 0;
}
static int lb035q02_remove(struct spi_device *spi)

4
drivers/gpu/drm/panel/panel-lg-lg4573.c
View File

@ -261,7 +261,9 @@ static int lg4573_probe(struct spi_device *spi)
drm_panel_init(&ctx->panel, &spi->dev, &lg4573_drm_funcs,
DRM_MODE_CONNECTOR_DPI);
return drm_panel_add(&ctx->panel);
drm_panel_add(&ctx->panel);
return 0;
}
static int lg4573_remove(struct spi_device *spi)

4
drivers/gpu/drm/panel/panel-lvds.c
View File

@ -227,9 +227,7 @@ static int panel_lvds_probe(struct platform_device *pdev)
if (ret)
return ret;
ret = drm_panel_add(&lvds->panel);
if (ret < 0)
return ret;
drm_panel_add(&lvds->panel);
dev_set_drvdata(lvds->dev, lvds);
return 0;

4
drivers/gpu/drm/panel/panel-nec-nl8048hl11.c
View File

@ -207,7 +207,9 @@ static int nl8048_probe(struct spi_device *spi)
drm_panel_init(&lcd->panel, &lcd->spi->dev, &nl8048_funcs,
DRM_MODE_CONNECTOR_DPI);
return drm_panel_add(&lcd->panel);
drm_panel_add(&lcd->panel);
return 0;
}
static int nl8048_remove(struct spi_device *spi)

4
drivers/gpu/drm/panel/panel-novatek-nt35510.c
View File

@ -956,9 +956,7 @@ static int nt35510_probe(struct mipi_dsi_device *dsi)
nt->panel.backlight = bl;
}
ret = drm_panel_add(&nt->panel);
if (ret < 0)
return ret;
drm_panel_add(&nt->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0)

6
drivers/gpu/drm/panel/panel-novatek-nt39016.c
View File

@ -303,11 +303,7 @@ static int nt39016_probe(struct spi_device *spi)
drm_panel_init(&panel->drm_panel, dev, &nt39016_funcs,
DRM_MODE_CONNECTOR_DPI);
err = drm_panel_add(&panel->drm_panel);
if (err < 0) {
dev_err(dev, "Failed to register panel");
return err;
}
drm_panel_add(&panel->drm_panel);
return 0;
}

4
drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c
View File

@ -283,7 +283,9 @@ static int lcd_olinuxino_probe(struct i2c_client *client,
if (ret)
return ret;
return drm_panel_add(&lcd->panel);
drm_panel_add(&lcd->panel);
return 0;
}
static int lcd_olinuxino_remove(struct i2c_client *client)

4
drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c
View File

@ -164,7 +164,9 @@ static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
if (ret)
return ret;
return drm_panel_add(&osd101t2587->base);
drm_panel_add(&osd101t2587->base);
return 0;
}
static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)

4
drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
View File

@ -206,7 +206,9 @@ static int wuxga_nt_panel_add(struct wuxga_nt_panel *wuxga_nt)
if (ret)
return ret;
return drm_panel_add(&wuxga_nt->base);
drm_panel_add(&wuxga_nt->base);
return 0;
}
static void wuxga_nt_panel_del(struct wuxga_nt_panel *wuxga_nt)

6
drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
View File

@ -361,7 +361,7 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c,
struct rpi_touchscreen *ts;
struct device_node *endpoint, *dsi_host_node;
struct mipi_dsi_host *host;
int ret, ver;
int ver;
struct mipi_dsi_device_info info = {
.type = RPI_DSI_DRIVER_NAME,
.channel = 0,
@ -429,9 +429,7 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c,
/* This appears last, as it's what will unblock the DSI host
* driver's component bind function.
*/
ret = drm_panel_add(&ts->base);
if (ret)
return ret;
drm_panel_add(&ts->base);
return 0;

4
drivers/gpu/drm/panel/panel-raydium-rm67191.c
View File

@ -609,9 +609,7 @@ static int rad_panel_probe(struct mipi_dsi_device *dsi)
DRM_MODE_CONNECTOR_DSI);
dev_set_drvdata(dev, panel);
ret = drm_panel_add(&panel->panel);
if (ret)
return ret;
drm_panel_add(&panel->panel);
ret = mipi_dsi_attach(dsi);
if (ret)

4
drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
View File

@ -200,9 +200,7 @@ static int rb070d30_panel_dsi_probe(struct mipi_dsi_device *dsi)
if (ret)
return ret;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
drm_panel_add(&ctx->panel);
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM;
dsi->format = MIPI_DSI_FMT_RGB888;

4
drivers/gpu/drm/panel/panel-samsung-ld9040.c
View File

@ -354,7 +354,9 @@ static int ld9040_probe(struct spi_device *spi)
drm_panel_init(&ctx->panel, dev, &ld9040_drm_funcs,
DRM_MODE_CONNECTOR_DPI);
return drm_panel_add(&ctx->panel);
drm_panel_add(&ctx->panel);
return 0;
}
static int ld9040_remove(struct spi_device *spi)

4
drivers/gpu/drm/panel/panel-samsung-s6d16d0.c
View File

@ -212,9 +212,7 @@ static int s6d16d0_probe(struct mipi_dsi_device *dsi)
drm_panel_init(&s6->panel, dev, &s6d16d0_drm_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_add(&s6->panel);
if (ret < 0)
return ret;
drm_panel_add(&s6->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0)

6
drivers/gpu/drm/panel/panel-samsung-s6e3ha2.c
View File

@ -733,9 +733,7 @@ static int s6e3ha2_probe(struct mipi_dsi_device *dsi)
drm_panel_init(&ctx->panel, dev, &s6e3ha2_drm_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
goto unregister_backlight;
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0)
@ -745,8 +743,6 @@ static int s6e3ha2_probe(struct mipi_dsi_device *dsi)
remove_panel:
drm_panel_remove(&ctx->panel);
unregister_backlight:
backlight_device_unregister(ctx->bl_dev);
return ret;

6
drivers/gpu/drm/panel/panel-samsung-s6e63j0x03.c
View File

@ -479,9 +479,7 @@ static int s6e63j0x03_probe(struct mipi_dsi_device *dsi)
ctx->bl_dev->props.brightness = DEFAULT_BRIGHTNESS;
ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
goto unregister_backlight;
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0)
@ -491,8 +489,6 @@ static int s6e63j0x03_probe(struct mipi_dsi_device *dsi)
remove_panel:
drm_panel_remove(&ctx->panel);
unregister_backlight:
backlight_device_unregister(ctx->bl_dev);
return ret;

4
drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
View File

@ -479,7 +479,9 @@ static int s6e63m0_probe(struct spi_device *spi)
if (ret < 0)
return ret;
return drm_panel_add(&ctx->panel);
drm_panel_add(&ctx->panel);
return 0;
}
static int s6e63m0_remove(struct spi_device *spi)

6
drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c
View File

@ -242,11 +242,7 @@ static int s6e88a0_ams452ef01_probe(struct mipi_dsi_device *dsi)
drm_panel_init(&ctx->panel, dev, &s6e88a0_ams452ef01_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_add(&ctx->panel);
if (ret < 0) {
dev_err(dev, "Failed to add panel: %d\n", ret);
return ret;
}
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {

4
drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c
View File

@ -1020,9 +1020,7 @@ static int s6e8aa0_probe(struct mipi_dsi_device *dsi)
drm_panel_init(&ctx->panel, dev, &s6e8aa0_drm_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0)

4
drivers/gpu/drm/panel/panel-seiko-43wvf1g.c
View File

@ -258,9 +258,7 @@ static int seiko_panel_probe(struct device *dev,
if (err)
return err;
err = drm_panel_add(&panel->base);
if (err < 0)
return err;
drm_panel_add(&panel->base);
dev_set_drvdata(dev, panel);

4
drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
View File

@ -325,7 +325,9 @@ static int sharp_panel_add(struct sharp_panel *sharp)
if (ret)
return ret;
return drm_panel_add(&sharp->base);
drm_panel_add(&sharp->base);
return 0;
}
static void sharp_panel_del(struct sharp_panel *sharp)

4
drivers/gpu/drm/panel/panel-sharp-ls037v7dw01.c
View File

@ -187,7 +187,9 @@ static int ls037v7dw01_probe(struct platform_device *pdev)
drm_panel_init(&lcd->panel, &pdev->dev, &ls037v7dw01_funcs,
DRM_MODE_CONNECTOR_DPI);
return drm_panel_add(&lcd->panel);
drm_panel_add(&lcd->panel);
return 0;
}
static int ls037v7dw01_remove(struct platform_device *pdev)

4
drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
View File

@ -261,7 +261,9 @@ static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
if (ret)
return ret;
return drm_panel_add(&sharp_nt->base);
drm_panel_add(&sharp_nt->base);
return 0;
}
static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt)

4
drivers/gpu/drm/panel/panel-simple.c
View File

@ -613,9 +613,7 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
if (err)
goto free_ddc;
err = drm_panel_add(&panel->base);
if (err < 0)
goto free_ddc;
drm_panel_add(&panel->base);
dev_set_drvdata(dev, panel);

4
drivers/gpu/drm/panel/panel-sitronix-st7701.c
View File

@ -380,9 +380,7 @@ static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
if (ret)
return ret;
ret = drm_panel_add(&st7701->panel);
if (ret < 0)
return ret;
drm_panel_add(&st7701->panel);
mipi_dsi_set_drvdata(dsi, st7701);
st7701->dsi = dsi;

4
drivers/gpu/drm/panel/panel-sitronix-st7789v.c
View File

@ -382,9 +382,7 @@ static int st7789v_probe(struct spi_device *spi)
if (ret)
return ret;
ret = drm_panel_add(&ctx->panel);
if (ret < 0)
return ret;
drm_panel_add(&ctx->panel);
return 0;
}

4
drivers/gpu/drm/panel/panel-sony-acx424akp.c
View File

@ -504,9 +504,7 @@ static int acx424akp_probe(struct mipi_dsi_device *dsi)
acx->bl->props.brightness = 512;
acx->bl->props.power = FB_BLANK_POWERDOWN;
ret = drm_panel_add(&acx->panel);
if (ret < 0)
return ret;
drm_panel_add(&acx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {

7
drivers/gpu/drm/panel/panel-sony-acx565akm.c
View File

@ -650,12 +650,7 @@ static int acx565akm_probe(struct spi_device *spi)
drm_panel_init(&lcd->panel, &lcd->spi->dev, &acx565akm_funcs,
DRM_MODE_CONNECTOR_DPI);
ret = drm_panel_add(&lcd->panel);
if (ret < 0) {
if (lcd->has_bc)
acx565akm_backlight_cleanup(lcd);
return ret;
}
drm_panel_add(&lcd->panel);
return 0;
}

4
drivers/gpu/drm/panel/panel-tpo-td028ttec1.c
View File

@ -350,7 +350,9 @@ static int td028ttec1_probe(struct spi_device *spi)
if (ret)
return ret;
return drm_panel_add(&lcd->panel);
drm_panel_add(&lcd->panel);
return 0;
}
static int td028ttec1_remove(struct spi_device *spi)

6
drivers/gpu/drm/panel/panel-tpo-td043mtea1.c
View File

@ -460,11 +460,7 @@ static int td043mtea1_probe(struct spi_device *spi)
drm_panel_init(&lcd->panel, &lcd->spi->dev, &td043mtea1_funcs,
DRM_MODE_CONNECTOR_DPI);
ret = drm_panel_add(&lcd->panel);
if (ret < 0) {
sysfs_remove_group(&spi->dev.kobj, &td043mtea1_attr_group);
return ret;
}
drm_panel_add(&lcd->panel);
return 0;
}

4
drivers/gpu/drm/panel/panel-tpo-tpg110.c
View File

@ -448,7 +448,9 @@ static int tpg110_probe(struct spi_device *spi)
spi_set_drvdata(spi, tpg);
return drm_panel_add(&tpg->panel);
drm_panel_add(&tpg->panel);
return 0;
}
static int tpg110_remove(struct spi_device *spi)

2
include/drm/drm_panel.h
View File

@ -175,7 +175,7 @@ void drm_panel_init(struct drm_panel *panel, struct device *dev,
const struct drm_panel_funcs *funcs,
int connector_type);
int drm_panel_add(struct drm_panel *panel);
void drm_panel_add(struct drm_panel *panel);
void drm_panel_remove(struct drm_panel *panel);
int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector);