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Re: kern/54538 (wdc(4) regression after SATA NCQ merge)

The following reply was made to PR kern/54538; it has been noted by GNATS.

From: Izumi Tsutsui <>
Subject: Re: kern/54538 (wdc(4) regression after SATA NCQ merge)
Date: Tue, 10 Sep 2019 22:54:49 +0900

 > Committed a fix. Can you confirm it still works after change? The dreamcast
 > wdc reset didn't seem useful so I just disabled it.
 It looks wdc_g1_do_reset() is not necessary for wdcprobe(),
 but IIRC it was actually required on device accesses.
 GD-ROM is a very early ATAPI devices (appeared in 1998) and
 it doesn't reset its internal status by WDCTL_RST bit in AUXCTL
 but requires ATAPI_SOFT_RESET command, as per
 Anyway I'll try if your fix works or not.
 Izumi Tsutsui

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