From: Antonio Quartulli Date: Sat, 14 Apr 2012 11:15:26 +0000 (+0200) Subject: batman-adv: convert bat_priv->tt_crc from atomic_t to uint16_t X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=66a1b2bcb34b0c74a3422968b15a7ea853ea5a2d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git batman-adv: convert bat_priv->tt_crc from atomic_t to uint16_t In the code we neever need to atomically check and set the bat_priv->tt_crc field value. It is simply set and read once in different pieces of the code. Therefore this field can be safely be converted from atomic_t to uint16_t. Reported-by: Al Viro Signed-off-by: Antonio Quartulli Signed-off-by: Sven Eckelmann --- diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index dc53798ebb47..ec351199c652 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -575,8 +575,7 @@ static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, htonl((uint32_t)atomic_read(&hard_iface->seqno)); batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn); - batman_ogm_packet->tt_crc = htons((uint16_t) - atomic_read(&bat_priv->tt_crc)); + batman_ogm_packet->tt_crc = htons(bat_priv->tt_crc); if (tt_num_changes >= 0) batman_ogm_packet->tt_num_changes = tt_num_changes; diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index f47299f22c68..f5ff36492b2f 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -111,7 +111,7 @@ static int prepare_packet_buffer(struct bat_priv *bat_priv, realloc_packet_buffer(hard_iface, new_len); - atomic_set(&bat_priv->tt_crc, tt_local_crc(bat_priv)); + bat_priv->tt_crc = tt_local_crc(bat_priv); /* reset the sending counter */ atomic_set(&bat_priv->tt_ogm_append_cnt, TT_OGM_APPEND_MAX); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 61308e8016ff..547dc339f33d 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -210,7 +210,7 @@ struct bat_priv { spinlock_t vis_list_lock; /* protects vis_info::recv_list */ atomic_t num_local_tt; /* Checksum of the local table, recomputed before sending a new OGM */ - atomic_t tt_crc; + uint16_t tt_crc; unsigned char *tt_buff; int16_t tt_buff_len; spinlock_t tt_buff_lock; /* protects tt_buff */