Fix bug in xrefinfo_find() for 64-bit platforms

uintptr_t may be 64-bit on some platforms, therefore when
finding xrefinfo by pointer to device the high word is being
cut off due to cast to phandle_t which is 32-bit long by definition.
Due to that we loose the high word of the address to compare with
xi->dev's address.
To fix that, first argument of xrefinfo_find() is extended to
uintptr_t and is being cast to appropriate type (phandle_t)
when compared.

Submitted by:  Zbigniew Bodek <zbb@semihalf.com>
Reviewed by:   nwhitehorn
Obtained from: Semihalf

1 files changed, 4 insertions, 4 deletions

diff --git a/sys/dev/ofw/openfirm.c b/sys/dev/ofw/openfirm.c
index 7da5e584e242..b04dbc652478 100644
--- a/sys/dev/ofw/openfirm.c
+++ b/sys/dev/ofw/openfirm.c
@@ -154,16 +154,16 @@ xrefinfo_init(void *unsed)
 SYSINIT(xrefinfo, SI_SUB_KMEM, SI_ORDER_ANY, xrefinfo_init, NULL);
 
 static struct xrefinfo *
-xrefinfo_find(phandle_t phandle, int find_by)
+xrefinfo_find(uintptr_t key, int find_by)
 {
 	struct xrefinfo *rv, *xi;
 
 	rv = NULL;
 	mtx_lock(&xreflist_lock);
 	SLIST_FOREACH(xi, &xreflist, next_entry) {
-		if ((find_by == FIND_BY_XREF && phandle == xi->xref) ||
-		    (find_by == FIND_BY_NODE && phandle == xi->node) ||
-		    (find_by == FIND_BY_DEV && phandle == (uintptr_t)xi->dev)) {
+		if ((find_by == FIND_BY_XREF && (phandle_t)key == xi->xref) ||
+		    (find_by == FIND_BY_NODE && (phandle_t)key == xi->node) ||
+		    (find_by == FIND_BY_DEV && key == (uintptr_t)xi->dev)) {
 			rv = xi;
 			break;
 		}