usb: f_mass_storage: set removable flag in do_inquiry based on LUN

Without this flag, tools like Alex Page's USB Image Tool won't see drives exposed over USB Gadget as removable, and won't allow access to them. http://www.alexpage.de/usb-image-tool/ The code was pulled from the main-line kernel: drivers/usb/gadget/function/f_mass_storage.c Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>

usb: f_mass_storage: set removable flag in do_inquiry based on LUN
Without this flag, tools like Alex Page's USB Image Tool won't see drives exposed over USB Gadget as removable, and won't allow access to them. http://www.alexpage.de/usb-image-tool/ The code was pulled from the main-line kernel: drivers/usb/gadget/function/f_mass_storage.c Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Eric Nelson · Marek Vasut
1 parent ece91016c4
Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff
drivers/usb/gadget/f_mass_storage.c
@@ -1110,6 +1110,7 @@
  
 	memset(buf, 0, 8);
 	buf[0] = TYPE_DISK;
+	buf[1] = curlun->removable ? 0x80 : 0;
 	buf[2] = 2;		/* ANSI SCSI level 2 */
 	buf[3] = 2;		/* SCSI-2 INQUIRY data format */
 	buf[4] = 31;		/* Additional length */
...	...	@@ -1110,6 +1110,7 @@
1110	1110
1111	1111	memset(buf, 0, 8);
1112	1112	buf[0] = TYPE_DISK;
	1113	+ buf[1] = curlun->removable ? 0x80 : 0;
1113	1114	buf[2] = 2; /* ANSI SCSI level 2 */
1114	1115	buf[3] = 2; /* SCSI-2 INQUIRY data format */
1115	1116	buf[4] = 31; /* Additional length */