[U-Boot] [PATCH] usb: f_mass_storage: set removable flag in do_inquiry based on LUN
Eric Nelson
eric.nelson at boundarydevices.com
Sat Sep 20 02:06:46 CEST 2014
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 at boundarydevices.com>
---
drivers/usb/gadget/f_mass_storage.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index f274d96..e045957 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -1110,6 +1110,7 @@ static int do_inquiry(struct fsg_common *common, struct fsg_buffhd *bh)
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 */
--
1.9.1
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