1 files changed, 10 insertions, 8 deletions

diff --git a/drivers/char/ipmi/ipmi_kcs_sm.c b/drivers/char/ipmi/ipmi_kcs_sm.c
index 2062675f9e99..c1b8228cb7b6 100644
--- a/drivers/char/ipmi/ipmi_kcs_sm.c
+++ b/drivers/char/ipmi/ipmi_kcs_sm.c
@@ -93,8 +93,8 @@ enum kcs_states {
                                    state machine. */
 };
 
-#define MAX_KCS_READ_SIZE 80
-#define MAX_KCS_WRITE_SIZE 80
+#define MAX_KCS_READ_SIZE IPMI_MAX_MSG_LENGTH
+#define MAX_KCS_WRITE_SIZE IPMI_MAX_MSG_LENGTH
 
 /* Timeouts in microseconds. */
 #define IBF_RETRY_TIMEOUT 1000000
@@ -261,12 +261,14 @@ static int start_kcs_transaction(struct si_sm_data *kcs, unsigned char *data,
 {
         unsigned int i;
 
-        if ((size < 2) || (size > MAX_KCS_WRITE_SIZE)) {
-                return -1;
-        }
-        if ((kcs->state != KCS_IDLE) && (kcs->state != KCS_HOSED)) {
-                return -2;
-        }
+        if (size < 2)
+                return IPMI_REQ_LEN_INVALID_ERR;
+        if (size > MAX_KCS_WRITE_SIZE)
+                return IPMI_REQ_LEN_EXCEEDED_ERR;
+
+        if ((kcs->state != KCS_IDLE) && (kcs->state != KCS_HOSED))
+                return IPMI_NOT_IN_MY_STATE_ERR;
+
         if (kcs_debug & KCS_DEBUG_MSG) {
                 printk(KERN_DEBUG "start_kcs_transaction -");
                 for (i = 0; i < size; i ++) {