powerpc/pseries: Decrease message level on EEH initialization

As Anton suggested, the patch decreases the message level on EEH
initialization to avoid unnecessary messages if required. Also,
we have unified hint if any of needful RTAS calls is missed, and
then we can check /proc/device-tree to figure out the missed RTAS
calls.

Suggested-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c
index 4fc5ff96f418ec238ddf980924851df38e335d3d..a6c7e19f5eb365e2091a270929cf9a7025548e08 100644 (file)
--- a/arch/powerpc/platforms/pseries/eeh_pseries.c
+++ b/arch/powerpc/platforms/pseries/eeh_pseries.c
@@ -88,29 +88,14 @@ static int pseries_eeh_init(void)
         * and its variant since the old firmware probably support address
         * of domain/bus/slot/function for EEH RTAS operations.
         */
-       if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE) {
-               pr_warn("%s: RTAS service <ibm,set-eeh-option> invalid\n",
-                       __func__);
-               return -EINVAL;
-       } else if (ibm_set_slot_reset == RTAS_UNKNOWN_SERVICE) {
-               pr_warn("%s: RTAS service <ibm,set-slot-reset> invalid\n",
-                       __func__);
-               return -EINVAL;
-       } else if (ibm_read_slot_reset_state2 == RTAS_UNKNOWN_SERVICE &&
-                  ibm_read_slot_reset_state == RTAS_UNKNOWN_SERVICE) {
-               pr_warn("%s: RTAS service <ibm,read-slot-reset-state2> and "
-                       "<ibm,read-slot-reset-state> invalid\n",
-                       __func__);
-               return -EINVAL;
-       } else if (ibm_slot_error_detail == RTAS_UNKNOWN_SERVICE) {
-               pr_warn("%s: RTAS service <ibm,slot-error-detail> invalid\n",
-                       __func__);
-               return -EINVAL;
-       } else if (ibm_configure_pe == RTAS_UNKNOWN_SERVICE &&
-                  ibm_configure_bridge == RTAS_UNKNOWN_SERVICE) {
-               pr_warn("%s: RTAS service <ibm,configure-pe> and "
-                       "<ibm,configure-bridge> invalid\n",
-                       __func__);
+       if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE          ||
+           ibm_set_slot_reset == RTAS_UNKNOWN_SERVICE          ||
+           (ibm_read_slot_reset_state2 == RTAS_UNKNOWN_SERVICE &&
+            ibm_read_slot_reset_state == RTAS_UNKNOWN_SERVICE) ||
+           ibm_slot_error_detail == RTAS_UNKNOWN_SERVICE       ||
+           (ibm_configure_pe == RTAS_UNKNOWN_SERVICE           &&
+            ibm_configure_bridge == RTAS_UNKNOWN_SERVICE)) {
+               pr_info("EEH functionality not supported\n");
                return -EINVAL;
        }
 
@@ -118,11 +103,11 @@ static int pseries_eeh_init(void)
        spin_lock_init(&slot_errbuf_lock);
        eeh_error_buf_size = rtas_token("rtas-error-log-max");
        if (eeh_error_buf_size == RTAS_UNKNOWN_SERVICE) {
-               pr_warn("%s: unknown EEH error log size\n",
+               pr_info("%s: unknown EEH error log size\n",
                        __func__);
                eeh_error_buf_size = 1024;
        } else if (eeh_error_buf_size > RTAS_ERROR_LOG_MAX) {
-               pr_warn("%s: EEH error log size %d exceeds the maximal %d\n",
+               pr_info("%s: EEH error log size %d exceeds the maximal %d\n",
                        __func__, eeh_error_buf_size, RTAS_ERROR_LOG_MAX);
                eeh_error_buf_size = RTAS_ERROR_LOG_MAX;
        }