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W1: recode w1_slave_found logic 

Simplified the logic in w1_slave_found by using the new
w1_attach_slave_device function to find a slave and mark it as active or
add the device if the crc checks.

Signed-off-by: David Fries <david@fries.net>
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Fries 2008-10-15 22:04:44 -07:00 committed by Linus Torvalds
parent 9b46741119
commit cd7b28d33d
1 changed files with 6 additions and 20 deletions
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26
drivers/w1/w1.c
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@ -845,9 +845,7 @@ void w1_reconnect_slaves(struct w1_family *f, int attach)
static void w1_slave_found(struct w1_master *dev, u64 rn)
{
int slave_count;
struct w1_slave *sl;
struct list_head *ent;
struct w1_reg_num *tmp;
u64 rn_le = cpu_to_le64(rn);
@ -855,24 +853,12 @@ static void w1_slave_found(struct w1_master *dev, u64 rn)
tmp = (struct w1_reg_num *) &rn;
slave_count = 0;
list_for_each(ent, &dev->slist) {
sl = list_entry(ent, struct w1_slave, w1_slave_entry);
if (sl->reg_num.family == tmp->family &&
sl->reg_num.id == tmp->id &&
sl->reg_num.crc == tmp->crc) {
set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags);
break;
}
slave_count++;
}
if (slave_count == dev->slave_count &&
rn && ((rn >> 56) & 0xff) == w1_calc_crc8((u8 *)&rn_le, 7)) {
w1_attach_slave_device(dev, tmp);
sl = w1_slave_search_device(dev, tmp);
if (sl) {
set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags);
} else {
if (rn && tmp->crc == w1_calc_crc8((u8 *)&rn_le, 7))
w1_attach_slave_device(dev, tmp);
}
atomic_dec(&dev->refcnt);