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powerpc: Make device tree accesses in VIO subsystem endian safe

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Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2013-08-07 02:01:40 +10:00 committed by Benjamin Herrenschmidt
parent 1502b480e2
commit 7560d32757
1 changed files with 17 additions and 14 deletions
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31
arch/powerpc/kernel/vio.c
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@ -1312,8 +1312,7 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
{
struct vio_dev *viodev;
struct device_node *parent_node;
const unsigned int *unit_address;
const unsigned int *pfo_resid = NULL;
const __be32 *prop;
enum vio_dev_family family;
const char *of_node_name = of_node->name ? of_node->name : "<unknown>";
@ -1360,6 +1359,8 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
/* we need the 'device_type' property, in order to match with drivers */
viodev->family = family;
if (viodev->family == VDEVICE) {
unsigned int unit_address;
if (of_node->type != NULL)
viodev->type = of_node->type;
else {
@ -1368,24 +1369,24 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
goto out;
}
unit_address = of_get_property(of_node, "reg", NULL);
if (unit_address == NULL) {
prop = of_get_property(of_node, "reg", NULL);
if (prop == NULL) {
pr_warn("%s: node %s missing 'reg'\n",
__func__, of_node_name);
goto out;
}
dev_set_name(&viodev->dev, "%x", *unit_address);
unit_address = of_read_number(prop, 1);
dev_set_name(&viodev->dev, "%x", unit_address);
viodev->irq = irq_of_parse_and_map(of_node, 0);
viodev->unit_address = *unit_address;
viodev->unit_address = unit_address;
} else {
/* PFO devices need their resource_id for submitting COP_OPs
* This is an optional field for devices, but is required when
* performing synchronous ops */
pfo_resid = of_get_property(of_node, "ibm,resource-id", NULL);
if (pfo_resid != NULL)
viodev->resource_id = *pfo_resid;
prop = of_get_property(of_node, "ibm,resource-id", NULL);
if (prop != NULL)
viodev->resource_id = of_read_number(prop, 1);
unit_address = NULL;
dev_set_name(&viodev->dev, "%s", of_node_name);
viodev->type = of_node_name;
viodev->irq = 0;
@ -1622,7 +1623,6 @@ static struct vio_dev *vio_find_name(const char *name)
*/
struct vio_dev *vio_find_node(struct device_node *vnode)
{
const uint32_t *unit_address;
char kobj_name[20];
struct device_node *vnode_parent;
const char *dev_type;
@ -1638,10 +1638,13 @@ struct vio_dev *vio_find_node(struct device_node *vnode)
/* construct the kobject name from the device node */
if (!strcmp(dev_type, "vdevice")) {
unit_address = of_get_property(vnode, "reg", NULL);
if (!unit_address)
const __be32 *prop;
prop = of_get_property(vnode, "reg", NULL);
if (!prop)
return NULL;
snprintf(kobj_name, sizeof(kobj_name), "%x", *unit_address);
snprintf(kobj_name, sizeof(kobj_name), "%x",
(uint32_t)of_read_number(prop, 1));
} else if (!strcmp(dev_type, "ibm,platform-facilities"))
snprintf(kobj_name, sizeof(kobj_name), "%s", vnode->name);
else