rpmsg: glink: Avoid dereferencing NULL channel

[linux-2.6-microblaze.git] / drivers / rpmsg / qcom_glink_native.c

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index e10c05e..82d460f 100644 (file)
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1070,8 +1070,10 @@ static void qcom_glink_handle_signals(struct qcom_glink *glink,
        spin_lock_irqsave(&glink->idr_lock, flags);
        channel = idr_find(&glink->rcids, rcid);
        spin_unlock_irqrestore(&glink->idr_lock, flags);
-       if (!channel)
+       if (!channel) {
                dev_err(glink->dev, "signal for non-existing channel\n");
+               return;
+       }
 
        enable = sigs & NATIVE_DSR_SIG || sigs & NATIVE_CTS_SIG;