As talked about in commit d2aacaf07395 ("drm/panel: Check for already
prepared/enabled in drm_panel"), we want to remove needless code from
panel drivers that was storing and double-checking the
prepared/enabled state. Even if someone was relying on the
double-check before, that double-check is now in the core and not
needed in individual drivers.

Cc: "Heiko Stübner" <he...@sntech.de>
Cc: Quentin Schulz <quentin.sch...@theobroma-systems.com>
Signed-off-by: Douglas Anderson <diand...@chromium.org>
---

Changes in v2:
- Only handle 1 panel per patch.
- Split removal of prepared/enabled from handling of remove/shutdown.

 drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c 
b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
index 1a26205701b5..5894bf30524a 100644
--- a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
+++ b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c
@@ -36,7 +36,6 @@ struct ltk050h3146w {
        struct regulator *vci;
        struct regulator *iovcc;
        const struct ltk050h3146w_desc *panel_desc;
-       bool prepared;
 };
 
 static const struct ltk050h3146w_cmd page1_cmds[] = {
@@ -521,9 +520,6 @@ static int ltk050h3146w_unprepare(struct drm_panel *panel)
        struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
        int ret;
 
-       if (!ctx->prepared)
-               return 0;
-
        ret = mipi_dsi_dcs_set_display_off(dsi);
        if (ret < 0) {
                dev_err(ctx->dev, "failed to set display off: %d\n", ret);
@@ -539,8 +535,6 @@ static int ltk050h3146w_unprepare(struct drm_panel *panel)
        regulator_disable(ctx->iovcc);
        regulator_disable(ctx->vci);
 
-       ctx->prepared = false;
-
        return 0;
 }
 
@@ -550,9 +544,6 @@ static int ltk050h3146w_prepare(struct drm_panel *panel)
        struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
        int ret;
 
-       if (ctx->prepared)
-               return 0;
-
        dev_dbg(ctx->dev, "Resetting the panel\n");
        ret = regulator_enable(ctx->vci);
        if (ret < 0) {
@@ -593,8 +584,6 @@ static int ltk050h3146w_prepare(struct drm_panel *panel)
 
        msleep(50);
 
-       ctx->prepared = true;
-
        return 0;
 
 disable_iovcc:
-- 
2.45.0.rc1.225.g2a3ae87e7f-goog

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