On Fri, 24 Jul 2015, Giulio Bernardi wrote: > This is the trace I got after I used this option: > options usb-storage quirks=152d:1567:u
This trace is pretty clear; the system does not scan for logical units beyond LUN 0, even though the device contains two logical units. In older kernels this was controlled by CONFIG_SCSI_MULTI_LUN, but that setting was removed in the 3.17 kernel. In more recent kernels, LUN scanning is controlled by a bunch of software rules, but I don't see any reason why they would prevent LUN 1 from being scanned on your device. If you want to see what's going on, read through the scsi_sequential_lun_scan() routine in drivers/scsi/scsi_scan.c. The most important thing to check is the value of max_dev_lun for your device. Also, the BLIST_FORCELUN bit should be set in bflags. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
