From: Michal Nazarewicz <[email protected]> Changing flags field of the w1_slave to unsigned long may on some architectures increase the size of the structure, but otherwise makes the code more kosher as casting is avoided and *_bit family of calls do not attempt to operate on an entity of bigger size than realy is available.
The current behaviour does not introduce any bugs (since any bytes past flags field are preserved) but make the code slightly more confusing then it needs to be. Signed-off-by: Michal Nazarewicz <[email protected]> --- drivers/w1/w1.c | 10 +++++----- drivers/w1/w1.h | 2 +- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index fa932c2..66efa96 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -709,7 +709,7 @@ static int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn) sl->owner = THIS_MODULE; sl->master = dev; - set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags); + set_bit(W1_SLAVE_ACTIVE, &sl->flags); memset(&msg, 0, sizeof(msg)); memcpy(&sl->reg_num, rn, sizeof(sl->reg_num)); @@ -866,7 +866,7 @@ void w1_slave_found(struct w1_master *dev, u64 rn) sl = w1_slave_search_device(dev, tmp); if (sl) { - set_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags); + set_bit(W1_SLAVE_ACTIVE, &sl->flags); } else { if (rn && tmp->crc == w1_calc_crc8((u8 *)&rn_le, 7)) w1_attach_slave_device(dev, tmp); @@ -984,14 +984,14 @@ void w1_search_process_cb(struct w1_master *dev, u8 search_type, struct w1_slave *sl, *sln; list_for_each_entry(sl, &dev->slist, w1_slave_entry) - clear_bit(W1_SLAVE_ACTIVE, (long *)&sl->flags); + clear_bit(W1_SLAVE_ACTIVE, &sl->flags); w1_search_devices(dev, search_type, cb); list_for_each_entry_safe(sl, sln, &dev->slist, w1_slave_entry) { - if (!test_bit(W1_SLAVE_ACTIVE, (unsigned long *)&sl->flags) && !--sl->ttl) + if (!test_bit(W1_SLAVE_ACTIVE, &sl->flags) && !--sl->ttl) w1_slave_detach(sl); - else if (test_bit(W1_SLAVE_ACTIVE, (unsigned long *)&sl->flags)) + else if (test_bit(W1_SLAVE_ACTIVE, &sl->flags)) sl->ttl = dev->slave_ttl; } diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h index 45908e5..ca8081a 100644 --- a/drivers/w1/w1.h +++ b/drivers/w1/w1.h @@ -67,8 +67,8 @@ struct w1_slave struct w1_reg_num reg_num; atomic_t refcnt; u8 rom[9]; - u32 flags; int ttl; + unsigned long flags; struct w1_master *master; struct w1_family *family; -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
