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Use NULL rather than 0 for various pointer constants.

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This commit is contained in:
John Baldwin 2007-02-26 19:28:18 +00:00
parent 149b6b0b12
commit c0e767f9dd
1 changed files with 26 additions and 26 deletions
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52
sys/kern/subr_bus.c
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@ -793,7 +793,7 @@ devclass_find_internal(const char *classname, const char *parentname,
*/
if (parentname && dc && !dc->parent &&
strcmp(classname, parentname) != 0) {
dc->parent = devclass_find_internal(parentname, 0, FALSE);
dc->parent = devclass_find_internal(parentname, NULL, FALSE);
}
return (dc);
@ -810,7 +810,7 @@ devclass_find_internal(const char *classname, const char *parentname,
devclass_t
devclass_create(const char *classname)
{
return (devclass_find_internal(classname, 0, TRUE));
return (devclass_find_internal(classname, NULL, TRUE));
}
/**
@ -824,7 +824,7 @@ devclass_create(const char *classname)
devclass_t
devclass_find(const char *classname)
{
return (devclass_find_internal(classname, 0, FALSE));
return (devclass_find_internal(classname, NULL, FALSE));
}
/**
@ -861,7 +861,7 @@ devclass_add_driver(devclass_t dc, driver_t *driver)
/*
* Make sure the devclass which the driver is implementing exists.
*/
devclass_find_internal(driver->name, 0, TRUE);
devclass_find_internal(driver->name, NULL, TRUE);
dl->driver = driver;
TAILQ_INSERT_TAIL(&dc->drivers, dl, link);
@ -1438,7 +1438,7 @@ make_device(device_t parent, const char *name, int unit)
PDEBUG(("%s at %s as unit %d", name, DEVICENAME(parent), unit));
if (name) {
dc = devclass_find_internal(name, 0, TRUE);
dc = devclass_find_internal(name, NULL, TRUE);
if (!dc) {
printf("make_device: can't find device class %s\n",
name);
@ -1692,7 +1692,7 @@ int
device_probe_child(device_t dev, device_t child)
{
devclass_t dc;
driverlink_t best = 0;
driverlink_t best = NULL;
driverlink_t dl;
int result, pri = 0;
int hasclass = (child->devclass != 0);
@ -1728,7 +1728,7 @@ device_probe_child(device_t dev, device_t child)
/* Reset flags and devclass before the next probe. */
child->devflags = 0;
if (!hasclass)
device_set_devclass(child, 0);
device_set_devclass(child, NULL);
/*
* If the driver returns SUCCESS, there can be
@ -1745,7 +1745,7 @@ device_probe_child(device_t dev, device_t child)
* certainly doesn't match.
*/
if (result > 0) {
device_set_driver(child, 0);
device_set_driver(child, NULL);
continue;
}
@ -1754,7 +1754,7 @@ device_probe_child(device_t dev, device_t child)
* best matching driver. Initialise the value
* of pri for the first match.
*/
if (best == 0 || result > pri) {
if (best == NULL || result > pri) {
best = dl;
pri = result;
continue;
@ -2241,7 +2241,7 @@ device_set_devclass(device_t dev, const char *classname)
return (EINVAL);
}
dc = devclass_find_internal(classname, 0, TRUE);
dc = devclass_find_internal(classname, NULL, TRUE);
if (!dc)
return (ENOMEM);
@ -2271,7 +2271,7 @@ device_set_driver(device_t dev, driver_t *driver)
free(dev->softc, M_BUS_SC);
dev->softc = NULL;
}
kobj_delete((kobj_t) dev, 0);
kobj_delete((kobj_t) dev, NULL);
dev->driver = driver;
if (driver) {
kobj_init((kobj_t) dev, (kobj_class_t) driver);
@ -2279,7 +2279,7 @@ device_set_driver(device_t dev, driver_t *driver)
dev->softc = malloc(driver->size, M_BUS_SC,
M_NOWAIT | M_ZERO);
if (!dev->softc) {
kobj_delete((kobj_t) dev, 0);
kobj_delete((kobj_t) dev, NULL);
kobj_init((kobj_t) dev, &null_class);
dev->driver = NULL;
return (ENOMEM);
@ -2380,8 +2380,8 @@ device_attach(device_t dev)
printf("device_attach: %s%d attach returned %d\n",
dev->driver->name, dev->unit, error);
/* Unset the class; set in device_probe_child */
if (dev->devclass == 0)
device_set_devclass(dev, 0);
if (dev->devclass == NULL)
device_set_devclass(dev, NULL);
device_set_driver(dev, NULL);
device_sysctl_fini(dev);
dev->state = DS_NOTPRESENT;
@ -2692,7 +2692,7 @@ struct resource *
resource_list_alloc(struct resource_list *rl, device_t bus, device_t child,
int type, int *rid, u_long start, u_long end, u_long count, u_int flags)
{
struct resource_list_entry *rle = 0;
struct resource_list_entry *rle = NULL;
int passthrough = (device_get_parent(child) != bus);
int isdefault = (start == 0UL && end == ~0UL);
@ -2751,7 +2751,7 @@ int
resource_list_release(struct resource_list *rl, device_t bus, device_t child,
int type, int rid, struct resource *res)
{
struct resource_list_entry *rle = 0;
struct resource_list_entry *rle = NULL;
int passthrough = (device_get_parent(child) != bus);
int error;
@ -3403,8 +3403,8 @@ struct resource *
bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end,
u_long count, u_int flags)
{
if (dev->parent == 0)
return (0);
if (dev->parent == NULL)
return (NULL);
return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end,
count, flags));
}
@ -3418,7 +3418,7 @@ bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end,
int
bus_activate_resource(device_t dev, int type, int rid, struct resource *r)
{
if (dev->parent == 0)
if (dev->parent == NULL)
return (EINVAL);
return (BUS_ACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
}
@ -3432,7 +3432,7 @@ bus_activate_resource(device_t dev, int type, int rid, struct resource *r)
int
bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r)
{
if (dev->parent == 0)
if (dev->parent == NULL)
return (EINVAL);
return (BUS_DEACTIVATE_RESOURCE(dev->parent, dev, type, rid, r));
}
@ -3446,7 +3446,7 @@ bus_deactivate_resource(device_t dev, int type, int rid, struct resource *r)
int
bus_release_resource(device_t dev, int type, int rid, struct resource *r)
{
if (dev->parent == 0)
if (dev->parent == NULL)
return (EINVAL);
return (BUS_RELEASE_RESOURCE(dev->parent, dev, type, rid, r));
}
@ -3463,7 +3463,7 @@ bus_setup_intr(device_t dev, struct resource *r, int flags,
{
int error;
if (dev->parent != 0) {
if (dev->parent != NULL) {
if ((flags &~ INTR_ENTROPY) == (INTR_TYPE_NET | INTR_MPSAFE) &&
!debug_mpsafenet)
flags &= ~INTR_MPSAFE;
@ -3496,7 +3496,7 @@ bus_setup_intr(device_t dev, struct resource *r, int flags,
int
bus_teardown_intr(device_t dev, struct resource *r, void *cookie)
{
if (dev->parent == 0)
if (dev->parent == NULL)
return (EINVAL);
return (BUS_TEARDOWN_INTR(dev->parent, dev, r, cookie));
}
@ -3729,7 +3729,7 @@ root_bus_module_handler(module_t mod, int what, void* arg)
kobj_init((kobj_t) root_bus, (kobj_class_t) &root_driver);
root_bus->driver = &root_driver;
root_bus->state = DS_ATTACHED;
root_devclass = devclass_find_internal("root", 0, FALSE);
root_devclass = devclass_find_internal("root", NULL, FALSE);
devinit();
return (0);
@ -3785,7 +3785,7 @@ driver_module_handler(module_t mod, int what, void *arg)
kobj_class_t driver;
dmd = (struct driver_module_data *)arg;
bus_devclass = devclass_find_internal(dmd->dmd_busname, 0, TRUE);
bus_devclass = devclass_find_internal(dmd->dmd_busname, NULL, TRUE);
error = 0;
switch (what) {
@ -3815,7 +3815,7 @@ driver_module_handler(module_t mod, int what, void *arg)
parentname, TRUE);
} else {
*dmd->dmd_devclass =
devclass_find_internal(driver->name, 0, TRUE);
devclass_find_internal(driver->name, NULL, TRUE);
}
break;