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-rw-r--r--drivers/video/omap2/dss/manager-sysfs.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/video/omap2/dss/manager-sysfs.c b/drivers/video/omap2/dss/manager-sysfs.c
index de7e7b5b1b7c..37b59fe28dc8 100644
--- a/drivers/video/omap2/dss/manager-sysfs.c
+++ b/drivers/video/omap2/dss/manager-sysfs.c
@@ -285,9 +285,10 @@ static ssize_t manager_alpha_blending_enabled_show(
{
struct omap_overlay_manager_info info;
- mgr->get_manager_info(mgr, &info);
+ if(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
+ return -ENODEV;
- WARN_ON(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER));
+ mgr->get_manager_info(mgr, &info);
return snprintf(buf, PAGE_SIZE, "%d\n",
info.partial_alpha_enabled);
@@ -301,7 +302,8 @@ static ssize_t manager_alpha_blending_enabled_store(
bool enable;
int r;
- WARN_ON(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER));
+ if(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
+ return -ENODEV;
r = strtobool(buf, &enable);
if (r)