From: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
Date: Mon, 31 Aug 2015 11:06:18 +0000 (+0530)
Subject: xen/dt: Handle correctly node without interrupt-map in dt_for_each_irq_map
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~2590
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=f42f2cbe54079a7480fa584680d7f7b849b97136;p=xen.git

xen/dt: Handle correctly node without interrupt-map in dt_for_each_irq_map

dt_for_each_irq_map() returns error if no irq mapping is found.
With this patch, ignore error and return success

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
Reviewed-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index 323c3be3e3..18cdb6f5f2 100644
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -1081,11 +1081,11 @@ int dt_for_each_irq_map(const struct dt_device_node *dev,
 
     /* Now look for an interrupt-map */
     imap = dt_get_property(dev, "interrupt-map", &imaplen);
-    /* No interrupt map, check for an interrupt parent */
+    /* No interrupt-map found. Ignore */
     if ( imap == NULL )
     {
         dt_dprintk(" -> no map, ignoring\n");
-        goto fail;
+        return 0;
     }
     imaplen /= sizeof(u32);