On Tuesday 10 January 2017 14:12:25 James Bottomley wrote: > On Tue, 2017-01-10 at 16:00 -0500, Alan Stern wrote: > > In theory, I suppose we could change the kernel so that it would > > default to READ CAPACITY(16) for devices that report a SCSI level >= > > 3, or something along those lines. In general we hesitate to make > > changes of this sort, because they almost always end up breaking > > _some_ devices -- and if that happens then the change is reverted, > > with no exceptions. Linus has a very strict rule about not breaking > > working systems. > > You shouldn't have to change anything: it already does (otherwise how > else would we detect physical exponent for proper SCSI devices) see > sd.c:sd_try_rc16_first(). It always returns false for USB because you > set sdev->try_rc_10_first So.. what does it mean? Can we enable READ CAPACITY(16) for some USB devices? -- Pali Rohár pali.rohar@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
