From: Corey Minyard Date: Fri, 24 Jun 2005 05:01:44 +0000 (-0700) Subject: [PATCH] ipmi: use completions, not semaphores, in powerdown code X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=77cf3973f22c7e7158f5e2c3c3d6809125b77e4b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [PATCH] ipmi: use completions, not semaphores, in powerdown code Don't use semaphores for IPC in the poweroff code, use completions instead. Signed-off-by: Corey Minyard Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c index 61329b55c4a9..f951c30236c9 100644 --- a/drivers/char/ipmi/ipmi_poweroff.c +++ b/drivers/char/ipmi/ipmi_poweroff.c @@ -31,12 +31,13 @@ * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include -#include +#include #include #include #include #include +#include +#include #include #include @@ -89,10 +90,10 @@ static struct ipmi_recv_msg halt_recv_msg = static void receive_handler(struct ipmi_recv_msg *recv_msg, void *handler_data) { - struct semaphore *sem = recv_msg->user_msg_data; + struct completion *comp = recv_msg->user_msg_data; - if (sem) - up(sem); + if (comp) + complete(comp); } static struct ipmi_user_hndl ipmi_poweroff_handler = @@ -105,27 +106,27 @@ static int ipmi_request_wait_for_response(ipmi_user_t user, struct ipmi_addr *addr, struct kernel_ipmi_msg *send_msg) { - int rv; - struct semaphore sem; + int rv; + struct completion comp; - sema_init (&sem, 0); + init_completion(&comp); - rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &sem, + rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, &comp, &halt_smi_msg, &halt_recv_msg, 0); if (rv) return rv; - down (&sem); + wait_for_completion(&comp); return halt_recv_msg.msg.data[0]; } -/* We are in run-to-completion mode, no semaphore is desired. */ +/* We are in run-to-completion mode, no completion is desired. */ static int ipmi_request_in_rc_mode(ipmi_user_t user, struct ipmi_addr *addr, struct kernel_ipmi_msg *send_msg) { - int rv; + int rv; rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, &halt_smi_msg, &halt_recv_msg, 0);