Date: Tue, 3 Sep 2002 23:53:37 -0700 (PDT) From: Warner Losh <imp@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/pccard pccard.c Message-ID: <200209040653.g846rbcG082289@freefall.freebsd.org>
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imp 2002/09/03 23:53:37 PDT
Modified files:
sys/dev/pccard pccard.c
Log:
More in the continuing saga of phk vs his strange serial card.
In this installment, we learn that it is bad to access registers that
are only defined for mfc cards in the interrupt handler when we do not
in fact have a mfc card. For MFC cards, we'll only call the ISR if
the this card interrupted bit is set. For non mfc cards (which are
basically 90% of pccards in use), we always call the ISR and avoid
touching the suspect registers. We always pacify the bit in the MFC
case on the off chance that will help in the itnerrupt handler not
being registed.
Revision Changes Path
1.64 +20 -80 src/sys/dev/pccard/pccard.c
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