Some low-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 <[email protected]>
---
drivers/usb/core/hub.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index cf7bbcb9a63c..46366c73f0df 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4524,7 +4524,10 @@ hub_port_init(struct usb_hub *hub, struct usb_device
*udev, int port1,
* 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 =
--
2.15.1
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