Author: eugen
Date: Wed Jul 18 18:28:17 2018
New Revision: 336461
URL: https://svnweb.freebsd.org/changeset/base/336461
Log:
bge(4): disable MSI for BGE_ASICREV_BCM5784/BGE_CHIPREV_5784_AX
found in some MacBook Pro.
PR: 229727
Reported by: Stephan Neuhaus <s...@artdecode.de> and others
Tested by: Stephan Neuhaus <s...@artdecode.de>
Approved by: mav (mentor)
MFC after: 1 month
Modified:
head/sys/dev/bge/if_bge.c
Modified: head/sys/dev/bge/if_bge.c
==============================================================================
--- head/sys/dev/bge/if_bge.c Wed Jul 18 17:58:17 2018 (r336460)
+++ head/sys/dev/bge/if_bge.c Wed Jul 18 18:28:17 2018 (r336461)
@@ -3212,6 +3212,14 @@ bge_can_use_msi(struct bge_softc *sc)
sc->bge_chiprev != BGE_CHIPREV_5750_BX)
can_use_msi = 1;
break;
+ case BGE_ASICREV_BCM5784:
+ /*
+ * Prevent infinite "watchdog timeout" errors
+ * in some MacBook Pro and make it work out-of-the-box.
+ */
+ if (sc->bge_chiprev == BGE_CHIPREV_5784_AX)
+ break;
+ /* FALLTHROUGH */
default:
if (BGE_IS_575X_PLUS(sc))
can_use_msi = 1;
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