diff options
Diffstat (limited to 'drivers/gpu/drm/drm_panel.c')
| -rw-r--r-- | drivers/gpu/drm/drm_panel.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c index ed7985c0535a..4ab7229fb22b 100644 --- a/drivers/gpu/drm/drm_panel.c +++ b/drivers/gpu/drm/drm_panel.c @@ -151,10 +151,13 @@ EXPORT_SYMBOL(drm_panel_detach); */ int drm_panel_prepare(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->prepare) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->prepare) return panel->funcs->prepare(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_prepare); @@ -171,10 +174,13 @@ EXPORT_SYMBOL(drm_panel_prepare); */ int drm_panel_unprepare(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->unprepare) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->unprepare) return panel->funcs->unprepare(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_unprepare); @@ -190,10 +196,13 @@ EXPORT_SYMBOL(drm_panel_unprepare); */ int drm_panel_enable(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->enable) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->enable) return panel->funcs->enable(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_enable); @@ -209,10 +218,13 @@ EXPORT_SYMBOL(drm_panel_enable); */ int drm_panel_disable(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->disable) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->disable) return panel->funcs->disable(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_disable); @@ -228,10 +240,13 @@ EXPORT_SYMBOL(drm_panel_disable); */ int drm_panel_get_modes(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->get_modes) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->get_modes) return panel->funcs->get_modes(panel); - return panel ? -ENOSYS : -EINVAL; + return -EOPNOTSUPP; } EXPORT_SYMBOL(drm_panel_get_modes); |