In the original source it would write past the end of the array before
returning the error code.
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
diff --git a/drivers/staging/ti-st/st_core.c b/drivers/staging/ti-st/st_core.c
index 063c9b1..0dfed21 100644
--- a/drivers/staging/ti-st/st_core.c
+++ b/drivers/staging/ti-st/st_core.c
@@ -686,9 +686,8 @@ long st_register(struct st_proto_s *new_proto)
default:
pr_err("%d protocol not supported",
new_proto->type);
- err = -EPROTONOSUPPORT;
- /* something wrong */
- break;
+ spin_unlock_irqrestore(&st_gdata->lock, flags);
+ return -EPROTONOSUPPORT;
}
st_gdata->list[new_proto->type] = new_proto;
st_gdata->protos_registered++;
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