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bge(4): disable MSI for BGE_ASICREV_BCM5784/BGE_CHIPREV_5784_AX

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found in some MacBook Pro.

PR:		229727
Reported by:	Stephan Neuhaus <sten@artdecode.de> and others
Tested by:	Stephan Neuhaus <sten@artdecode.de>
Approved by:	mav (mentor)
MFC after:	1 month
This commit is contained in:
eugen 2018-07-18 18:28:17 +00:00
parent c2547796ac
commit d66867c0db
1 changed files with 8 additions and 0 deletions
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8
sys/dev/bge/if_bge.c
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@ -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;