Use backlight_enable/disable helpers instead of changing
the property and calling backlight_update_status for cleaner
and simpler code and also to avoid repetitions.

Signed-off-by: Meghana Madhyastha <meghana.madhyas...@gmail.com>
---
changes in v17:
-remove redundant NULL check

 drivers/gpu/drm/panel/panel-innolux-p079zca.c   |  6 ++----
 drivers/gpu/drm/panel/panel-jdi-lt070me05000.c  |  6 ++----
 drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c | 10 ++--------
 drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c | 10 ++--------
 4 files changed, 8 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c 
b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index 6ba93449f..4c1b29eec 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -45,8 +45,7 @@ static int innolux_panel_disable(struct drm_panel *panel)
        if (!innolux->enabled)
                return 0;
 
-       innolux->backlight->props.power = FB_BLANK_POWERDOWN;
-       backlight_update_status(innolux->backlight);
+       backlight_disable(innolux->backlight);
 
        err = mipi_dsi_dcs_set_display_off(innolux->link);
        if (err < 0)
@@ -151,8 +150,7 @@ static int innolux_panel_enable(struct drm_panel *panel)
        if (innolux->enabled)
                return 0;
 
-       innolux->backlight->props.power = FB_BLANK_UNBLANK;
-       ret = backlight_update_status(innolux->backlight);
+       ret = backlight_enable(innolux->backlight);
        if (ret) {
                DRM_DEV_ERROR(panel->drm->dev,
                              "Failed to enable backlight %d\n", ret);
diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c 
b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
index 5b2340ef7..0a94ab79a 100644
--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -192,8 +192,7 @@ static int jdi_panel_disable(struct drm_panel *panel)
        if (!jdi->enabled)
                return 0;
 
-       jdi->backlight->props.power = FB_BLANK_POWERDOWN;
-       backlight_update_status(jdi->backlight);
+       backlight_disable(jdi->backlight);
 
        jdi->enabled = false;
 
@@ -289,8 +288,7 @@ static int jdi_panel_enable(struct drm_panel *panel)
        if (jdi->enabled)
                return 0;
 
-       jdi->backlight->props.power = FB_BLANK_UNBLANK;
-       backlight_update_status(jdi->backlight);
+       backlight_enable(jdi->backlight);
 
        jdi->enabled = true;
 
diff --git a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c 
b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
index 3cce3ca19..072c0fc79 100644
--- a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
@@ -96,10 +96,7 @@ static int sharp_panel_disable(struct drm_panel *panel)
        if (!sharp->enabled)
                return 0;
 
-       if (sharp->backlight) {
-               sharp->backlight->props.power = FB_BLANK_POWERDOWN;
-               backlight_update_status(sharp->backlight);
-       }
+       backlight_disable(sharp->backlight);
 
        sharp->enabled = false;
 
@@ -263,10 +260,7 @@ static int sharp_panel_enable(struct drm_panel *panel)
        if (sharp->enabled)
                return 0;
 
-       if (sharp->backlight) {
-               sharp->backlight->props.power = FB_BLANK_UNBLANK;
-               backlight_update_status(sharp->backlight);
-       }
+       backlight_enable(sharp->backlight);
 
        sharp->enabled = true;
 
diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c 
b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
index 3aeb0bda4..8a5137963 100644
--- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
@@ -117,10 +117,7 @@ static int sharp_nt_panel_disable(struct drm_panel *panel)
        if (!sharp_nt->enabled)
                return 0;
 
-       if (sharp_nt->backlight) {
-               sharp_nt->backlight->props.power = FB_BLANK_POWERDOWN;
-               backlight_update_status(sharp_nt->backlight);
-       }
+       backlight_disable(sharp_nt->backlight);
 
        sharp_nt->enabled = false;
 
@@ -203,10 +200,7 @@ static int sharp_nt_panel_enable(struct drm_panel *panel)
        if (sharp_nt->enabled)
                return 0;
 
-       if (sharp_nt->backlight) {
-               sharp_nt->backlight->props.power = FB_BLANK_UNBLANK;
-               backlight_update_status(sharp_nt->backlight);
-       }
+       backlight_enable(sharp_nt->backlight);
 
        sharp_nt->enabled = true;
 
-- 
2.11.0

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