From: Monam Agarwal Date: Sun, 23 Mar 2014 18:38:22 +0000 (+0530) Subject: drivers/staging: Use RCU_INIT_POINTER(x, NULL) in fwserial/fwserial.c X-Git-Tag: next-20140428~14^2~191 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e8429b0913a08d5779b93f5dc5e017cd48026b8b;p=karo-tx-linux.git drivers/staging: Use RCU_INIT_POINTER(x, NULL) in fwserial/fwserial.c This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by: Monam Agarwal Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index 9758c351026f..384758b11e3c 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -1807,7 +1807,7 @@ static void fwserial_release_port(struct fwtty_port *port, bool reset) port->max_payload = link_speed_to_max_payload(SCODE_100); dma_fifo_change_tx_limit(&port->tx_fifo, port->max_payload); - rcu_assign_pointer(port->peer, NULL); + RCU_INIT_POINTER(port->peer, NULL); spin_unlock_bh(&port->lock); if (port->port.console && port->fwcon_ops->notify != NULL) @@ -2240,7 +2240,7 @@ static int fwserial_create(struct fw_unit *unit) port->max_payload = link_speed_to_max_payload(SCODE_100); dma_fifo_init(&port->tx_fifo); - rcu_assign_pointer(port->peer, NULL); + RCU_INIT_POINTER(port->peer, NULL); serial->ports[i] = port; /* get unique bus addr region for port's status & recv fifo */