From owner-freebsd-stable  Mon Mar 15  0: 0:54 1999
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From: Gregory Bond <gnb@itga.com.au>
To: stable@FreeBSD.ORG
Cc: jwdare@novia.net (J.W. Dare)
Subject: Workaround: Re: acd1: rezero failed 
In-reply-to: Your message of Fri, 12 Mar 1999 14:31:34 +1100.
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Date: Mon, 15 Mar 1999 18:59:35 +1100
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With a bit more poking around, I have made the HP 8100 work with the acd
driver.  For some reason, the 8100 dislikes the ATAPI REZERO_UNIT command that
acdopen() sends when in write mode.  Yet it seems the HP 7200 has no problems
with the same code.  I've asked HP for any hints as to why the 8100 is
different but they have not yet had time to reply (and I don't expect much joy,
frankly).

The following patch makes the CD-R/CD-RW bit work (as far as I can tell from 
my brief testing).   I don't know all that much about the nitty-gritty of 
ATAPI so I don't know if this has any deadly consequences....

[btw: submitted as pr kern/dunno-yet]

*** ./sys/i386/isa/atapi-cd.c.dist      Mon Jan  4 10:13:22 1999
--- ./sys/i386/isa/atapi-cd.c   Mon Mar 15 16:51:44 1999
***************
*** 399,405 ****
              /* read/write */
              if (acd_rezero_unit(cdp)) {
                  printf("acd%d: rezero failed\n", lun);
!                 return EIO;
              }
          } else {
              /* read only */
--- 399,405 ----
              /* read/write */
              if (acd_rezero_unit(cdp)) {
                  printf("acd%d: rezero failed\n", lun);
!                 /* return EIO; */
              }
          } else {
              /* read only */




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