diff options
Diffstat (limited to 'drivers/char/ipmi/ipmi_poweroff.c')
| -rw-r--r-- | drivers/char/ipmi/ipmi_poweroff.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c index b86186de7f07..b065a53d1ca8 100644 --- a/drivers/char/ipmi/ipmi_poweroff.c +++ b/drivers/char/ipmi/ipmi_poweroff.c @@ -99,11 +99,14 @@ static unsigned char ipmi_version; allocate them, since we may be in a panic situation. The whole thing is single-threaded, anyway, so multiple messages are not required. */ +static atomic_t dummy_count = ATOMIC_INIT(0); static void dummy_smi_free(struct ipmi_smi_msg *msg) { + atomic_dec(&dummy_count); } static void dummy_recv_free(struct ipmi_recv_msg *msg) { + atomic_dec(&dummy_count); } static struct ipmi_smi_msg halt_smi_msg = { @@ -152,17 +155,28 @@ static int ipmi_request_wait_for_response(ipmi_user_t user, return halt_recv_msg.msg.data[0]; } -/* We are in run-to-completion mode, no completion is desired. */ +/* Wait for message to complete, spinning. */ static int ipmi_request_in_rc_mode(ipmi_user_t user, struct ipmi_addr *addr, struct kernel_ipmi_msg *send_msg) { int rv; + atomic_set(&dummy_count, 2); rv = ipmi_request_supply_msgs(user, addr, 0, send_msg, NULL, &halt_smi_msg, &halt_recv_msg, 0); - if (rv) + if (rv) { + atomic_set(&dummy_count, 0); return rv; + } + + /* + * Spin until our message is done. + */ + while (atomic_read(&dummy_count) > 0) { + ipmi_poll_interface(user); + cpu_relax(); + } return halt_recv_msg.msg.data[0]; } @@ -531,9 +545,7 @@ static void ipmi_poweroff_function (void) return; /* Use run-to-completion mode, since interrupts may be off. */ - ipmi_user_set_run_to_completion(ipmi_user, 1); specific_poweroff_func(ipmi_user); - ipmi_user_set_run_to_completion(ipmi_user, 0); } /* Wait for an IPMI interface to be installed, the first one installed |