696db22238
block descriptors enabled on mode sense commands. Basically, we try sending a mode sense with block descriptors disabled (the previous default), and if it fails, we try sending the mode sense with block descriptors enabled. If that works, we note that in a runtime quirk entry, so we don't bother disabling block descriptors again for the device. This problem was first reported by Chris Jones <cjones@honors.montana.edu> on one of the NetBSD lists, but I'd imagine that some FreeBSD users would have run into it eventually as well, since our changer driver is derived form the NetBSD changer driver. Also, change some of the probe logic so that we do the right thing in the case of a failure to attach. Fix a memory leak in chgetparams(). Add a couple of inline helper functions to scsi_all.h to correctly return the start of a mode page. NetBSD PR: kern/6214 Reviewed by: gibbs
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