Date: Sun, 11 Aug 1996 17:53:05 -0700 (PDT) From: Bill Paul <wpaul> To: CVS-committers, cvs-all, cvs-sys Subject: cvs commit: src/sys/i386/isa wd.c Message-ID: <199608120053.RAA22001@freefall.freebsd.org>
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wpaul 96/08/11 17:53:04
Modified: sys/i386/isa wd.c
Log:
Apply my small patch to make detection of ATAPI CD-ROMs happen a
little more reliably. So far I've received a couple of positive
responses and no objections to these changes.
There are two one-line changes:
- In wdprobe(), when testing the error status of drives, don't
unconditionally decide that there is no controller present if we
read back a value of 0x81 (drive 0 okay, drive 1 failed) twice
in a row. This may be caused by having an ATAPI CD-ROM jumpered
as a master on the controller with no slave.
- In wdgetctlr(), when checking for a status of WDCS_READY, check the
value twice. The first time may be bogus. This stops a phantom wd2
device from being detected when an ATAPI CD-ROM is attached to the
secondary controller alone as a slave. (This can cause installation to
fail when sysinstall attempts to open the phantom device and wedges the
system as a result. This has bitten me a couple of times on some
Gateway 2000 machines.)
Revision Changes Path
1.114 +11 -3 src/sys/i386/isa/wd.c
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