3.5.7.28 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Julius Werner <jwer...@chromium.org>
commit 2d51f3cd11f414c56a87dc018196b85fd50b04a4 upstream.
This patch adds a check for USB_STATE_NOTATTACHED to the
hub_port_warm_reset_required() workaround for ports that end up in
Compliance Mode in hub_events() when trying to decide which reset
function to use. Trying to call usb_reset_device() with a NOTATTACHED
device will just fail and leave the port broken.
Signed-off-by: Julius Werner <jwer...@chromium.org>
Acked-by: Alan Stern <st...@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
drivers/usb/core/hub.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index b79aa83..5e67525 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4561,8 +4561,9 @@ static void hub_events(void)
hub->hdev->children[i - 1];
dev_dbg(hub_dev, "warm reset port %d\n", i);
- if (!udev || !(portstatus &
- USB_PORT_STAT_CONNECTION)) {
+ if (!udev ||
+ !(portstatus & USB_PORT_STAT_CONNECTION) ||
+ udev->state == USB_STATE_NOTATTACHED) {
status = hub_port_reset(hub, i,
NULL, HUB_BH_RESET_TIME,
true);
--
1.8.3.2
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
