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Fix bug in xrefinfo_find() for 64-bit platforms

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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
This commit is contained in:
Zbigniew Bodek 2015-03-30 09:49:54 +00:00
parent a3db11e053
commit a83592093c
1 changed files with 4 additions and 4 deletions
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8
sys/dev/ofw/openfirm.c
View file

@ -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;
}