x86, mce: Add wrappers for registering on the decode chain

No functionality change, this is done so that in a follow-on patch all
queued-up MCEs can be decoded after registering on the chain.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index 70ad892..8568d9b 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -2234,7 +2234,7 @@
 	if (pvt->enable_scrub)
 		disable_sdram_scrub_setting(mci);
 
-	atomic_notifier_chain_unregister(&x86_mce_decoder_chain, &i7_mce_dec);
+	mce_unregister_decode_chain(&i7_mce_dec);
 
 	/* Disable EDAC polling */
 	i7core_pci_ctl_release(pvt);
@@ -2336,7 +2336,7 @@
 	/* DCLK for scrub rate setting */
 	pvt->dclk_freq = get_dclk_freq();
 
-	atomic_notifier_chain_register(&x86_mce_decoder_chain, &i7_mce_dec);
+	mce_register_decode_chain(&i7_mce_dec);
 
 	return 0;
 
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index d0864d9..bd926ea 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -884,7 +884,7 @@
 
 	pr_info("MCE: In-kernel MCE decoding enabled.\n");
 
-	atomic_notifier_chain_register(&x86_mce_decoder_chain, &amd_mce_dec_nb);
+	mce_register_decode_chain(&amd_mce_dec_nb);
 
 	return 0;
 }
@@ -893,7 +893,7 @@
 #ifdef MODULE
 static void __exit mce_amd_exit(void)
 {
-	atomic_notifier_chain_unregister(&x86_mce_decoder_chain, &amd_mce_dec_nb);
+	mce_unregister_decode_chain(&amd_mce_dec_nb);
 	kfree(fam_ops);
 }
 
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 7a402bf..965bc0c 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -1661,8 +1661,7 @@
 	debugf0("MC: " __FILE__ ": %s(): mci = %p, dev = %p\n",
 		__func__, mci, &sbridge_dev->pdev[0]->dev);
 
-	atomic_notifier_chain_unregister(&x86_mce_decoder_chain,
-					 &sbridge_mce_dec);
+	mce_unregister_decode_chain(&sbridge_mce_dec);
 
 	/* Remove MC sysfs nodes */
 	edac_mc_del_mc(mci->dev);
@@ -1731,8 +1730,7 @@
 		goto fail0;
 	}
 
-	atomic_notifier_chain_register(&x86_mce_decoder_chain,
-				       &sbridge_mce_dec);
+	mce_register_decode_chain(&sbridge_mce_dec);
 	return 0;
 
 fail0: