So I have got this device:
addr 2: File-backed Storage Gadget, Linux 2.6.24.2-Boeye with s3c-udc
The problem is that when I connect it to PC, it asks for confirmation
and I have to press button on the device. I guess uhub exploration code
timeouts while I'm doing that and gives me "uhub0: device problem,
disabling port 5". With diff attached it works reliably:
umass0 at uhub0 port 5 configuration 1 interface 0 "Linux 2.6.24.2-Boeye with
s3c-udc File-backed Storage Gadget" rev 2.00/3.22 addr 2
umass0: using SCSI over Bulk-Only
scsibus4 at umass0: 2 targets, initiator 0
sd2 at scsibus4 targ 1 lun 0: <Linux, File-Stor Gadget, 0322> SCSI2 0/direct
removable serial.00850600372041756775
sd2: 1885MB, 512 bytes/sector, 3862393 sectors
Index: uhub.c
===================================================================
RCS file: /cvs/src/sys/dev/usb/uhub.c,v
retrieving revision 1.59
diff -u -p -u -r1.59 uhub.c
--- uhub.c 29 Sep 2011 11:18:01 -0000 1.59
+++ uhub.c 20 Jan 2013 23:33:57 -0000
@@ -349,6 +349,7 @@ uhub_explore(usbd_device_handle dev)
int speed;
int port;
int change, status, reconnect;
+ int i;
DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address));
@@ -486,10 +487,14 @@ uhub_explore(usbd_device_handle dev)
speed = USB_SPEED_LOW;
else
speed = USB_SPEED_FULL;
- /* Get device info and set its address. */
- err = usbd_new_device(&sc->sc_dev, dev->bus,
- dev->depth + 1, speed, port, up);
- /* XXX retry a few times? */
+ for (i = 0; i < 3; i++) {
+ /* Get device info and set its address. */
+ err = usbd_new_device(&sc->sc_dev, dev->bus,
+ dev->depth + 1, speed, port, up);
+ usbd_delay_ms(dev, 100);
+ if (!err)
+ break;
+ }
if (err) {
DPRINTFN(-1,("uhub_explore: usbd_new_device failed, "
"error=%s\n", usbd_errstr(err)));
--
Alexander Polakov | plhk.ru
