3.16.61-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Maxim Moseychuk <franchesko.salias.hudro.pedros@xxxxxxxxx>
commit 6e01827ed93947895680fbdad68c072a0f4e2450 upstream.
Some low-speed and full-speed devices (for example, bluetooth)
do not have time to initialize. For them, ETIMEDOUT is a valid error.
We need to give them another try. Otherwise, they will
never be initialized correctly and in dmesg will be messages
"Bluetooth: hci0 command 0x1002 tx timeout" or similars.
Fixes: 264904ccc33c ("usb: retry reset if a device times out")
Signed-off-by: Maxim Moseychuk <franchesko.salias.hudro.pedros@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/usb/core/hub.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4381,7 +4381,9 @@ hub_port_init (struct usb_hub *hub, stru
* reset. But only on the first attempt,
* lest we get into a time out/reset loop
*/
- if (r == 0 || (r == -ETIMEDOUT && retries == 0))
+ if (r == 0 || (r == -ETIMEDOUT &&
+ retries == 0 &&
+ udev->speed > USB_SPEED_FULL))
break;
}
udev->descriptor.bMaxPacketSize0 =
