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-rw-r--r--core/ipmi.c5
-rw-r--r--hw/ipmi/ipmi-power.c6
-rw-r--r--include/ipmi.h3
3 files changed, 14 insertions, 0 deletions
diff --git a/core/ipmi.c b/core/ipmi.c
index 51908cd..67086d6 100644
--- a/core/ipmi.c
+++ b/core/ipmi.c
@@ -96,3 +96,8 @@ void ipmi_register_backend(struct ipmi_backend *backend)
assert(backend->dequeue_msg);
ipmi_backend = backend;
}
+
+bool ipmi_present(void)
+{
+ return ipmi_backend != NULL;
+}
diff --git a/hw/ipmi/ipmi-power.c b/hw/ipmi/ipmi-power.c
index ae3c577..05c0e4c 100644
--- a/hw/ipmi/ipmi-power.c
+++ b/hw/ipmi/ipmi-power.c
@@ -22,6 +22,9 @@ int ipmi_chassis_control(uint8_t request)
{
struct ipmi_msg *msg;
+ if (!ipmi_present())
+ return OPAL_CLOSED;
+
if (request > IPMI_CHASSIS_SOFT_SHUTDOWN)
return OPAL_PARAMETER;
@@ -44,6 +47,9 @@ int ipmi_set_power_state(uint8_t system, uint8_t device)
uint8_t device;
} power_state;
+ if (!ipmi_present())
+ return OPAL_CLOSED;
+
power_state.system = system;
power_state.device = device;
diff --git a/include/ipmi.h b/include/ipmi.h
index c64e1bd..6a438fb 100644
--- a/include/ipmi.h
+++ b/include/ipmi.h
@@ -18,6 +18,7 @@
#define __IPMI_H
#include <stdint.h>
+#include <stdbool.h>
/*
* IPMI codes as defined by the standard.
@@ -136,6 +137,8 @@ struct ipmi_backend {
/* Initialise the IPMI interface */
void ipmi_init(void);
+bool ipmi_present(void);
+
void ipmi_free_msg(struct ipmi_msg *msg);
struct ipmi_msg *ipmi_mkmsg_simple(uint32_t code, void *req_data, size_t req_size);