powerpc/opal: Assign numbers to OPAL_MSG macros of enum opal_msg_type

This patch assigns numbers to OPAL_MSG macros of enum opal_msg_type
to prevent accidental insertion of any new value in between and thus
break OPAL API. This is also helpful while backporting mainline kernel
changes to distros which run downlevel kernel and thus don't have all
OPAL messages defined, avoiding unnecessary bugs due to enum values
order mismatch.

Signed-off-by: Vipin K Parashar <vipin@linux.vnet.ibm.com>
Acked-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h
index f8faaaeeca1e16d57dd0a4d9dfff3cb73c7e055d..9bb8ddf0be37b94d08b4955bc794c30418361852 100644 (file)
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -368,16 +368,16 @@ enum OpalLPCAddressType {
 };
 
 enum opal_msg_type {
-       OPAL_MSG_ASYNC_COMP = 0,        /* params[0] = token, params[1] = rc,
+       OPAL_MSG_ASYNC_COMP     = 0,    /* params[0] = token, params[1] = rc,
                                         * additional params function-specific
                                         */
-       OPAL_MSG_MEM_ERR,
-       OPAL_MSG_EPOW,
-       OPAL_MSG_SHUTDOWN,              /* params[0] = 1 reboot, 0 shutdown */
-       OPAL_MSG_HMI_EVT,
-       OPAL_MSG_DPO,
-       OPAL_MSG_PRD,
-       OPAL_MSG_OCC,
+       OPAL_MSG_MEM_ERR        = 1,
+       OPAL_MSG_EPOW           = 2,
+       OPAL_MSG_SHUTDOWN       = 3,    /* params[0] = 1 reboot, 0 shutdown */
+       OPAL_MSG_HMI_EVT        = 4,
+       OPAL_MSG_DPO            = 5,
+       OPAL_MSG_PRD            = 6,
+       OPAL_MSG_OCC            = 7,
        OPAL_MSG_TYPE_MAX,
 };