[PATCH] IPMI: Fix BT long busy

The IPMI BT subdriver has been patched to survive "long busy" timeouts seen
during firmware upgrades and resets.  The patch never returns the HOSED state,
synthesizes response messages with meaningful completion codes, and recovers
gracefully when the hardware finishes the long busy.  The subdriver now issues
a "Get BT Capabilities" command and properly uses those results.  More
informative completion codes are returned on error from transaction starts;
this logic was propogated to the KCS and SMIC subdrivers.  Finally, indent and
other style quirks were normalized.

Signed-off-by: Rocky Craig <rocky.craig@hp.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 6 deletions

diff --git a/drivers/char/ipmi/ipmi_kcs_sm.c b/drivers/char/ipmi/ipmi_kcs_sm.c
index 2062675f9e9..fb46979567e 100644
--- a/drivers/char/ipmi/ipmi_kcs_sm.c
+++ b/drivers/char/ipmi/ipmi_kcs_sm.c
@@ -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 ++) {