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smbus: remove the potentially very dangerous slave probing code

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MFC after:	5 weeks
This commit is contained in:
Andriy Gapon 2016-11-02 17:07:18 +00:00
parent e3d255499a
commit 1d061e4ef2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=308220
1 changed files with 0 additions and 29 deletions
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29
sys/dev/smbus/smbus.c
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@ -50,7 +50,6 @@ struct smbus_ivar
/*
* Autoconfiguration and support routines for System Management bus
*/
static void smbus_probe_device(device_t dev, u_char addr);
static int
smbus_probe(device_t dev)
@ -65,13 +64,9 @@ static int
smbus_attach(device_t dev)
{
struct smbus_softc *sc = device_get_softc(dev);
unsigned char addr;
mtx_init(&sc->lock, device_get_nameunit(dev), "smbus", MTX_DEF);
bus_generic_probe(dev);
for (addr = SMBUS_ADDR_MIN; addr < SMBUS_ADDR_MAX; ++addr) {
smbus_probe_device(dev, addr);
}
bus_enumerate_hinted_children(dev);
bus_generic_attach(dev);
@ -98,30 +93,6 @@ smbus_generic_intr(device_t dev, u_char devaddr, char low, char high, int err)
{
}
static void
smbus_probe_device(device_t dev, u_char addr)
{
device_t child;
int error;
u_char cmd;
u_char buf[2];
struct smbus_ivar *devi;
cmd = 0x01;
error = smbus_trans(dev, addr, cmd,
SMB_TRANS_NOCNT | SMB_TRANS_NOREPORT,
NULL, 0, buf, 1, NULL);
if (error == 0) {
if (bootverbose)
device_printf(dev, "Probed address 0x%02x\n", addr);
child = BUS_ADD_CHILD(dev, SMBUS_ORDER_PNP, NULL, -1);
if (child == NULL)
return;
devi = device_get_ivars(child);
devi->addr = addr;
}
}
static device_t
smbus_add_child(device_t dev, u_int order, const char *name, int unit)
{