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authorChampion Chen <champion_chen@realsil.com.cn>2014-09-06 23:06:08 +0400
committerMarcel Holtmann <marcel@holtmann.org>2014-09-09 05:23:40 +0400
commit85560c4a828ec9c8573840c9b66487b6ae584768 (patch)
tree1e228a31513dbf5956e30ba8083794331e0728f0 /drivers/bluetooth
parente1e930f591bfd9604c3077f0af5c390f4f890259 (diff)
downloadlinux-85560c4a828ec9c8573840c9b66487b6ae584768.tar.xz
Bluetooth: Fix issue with USB suspend in btusb driver
Suspend could fail for some platforms because btusb_suspend==> btusb_stop_traffic ==> usb_kill_anchored_urbs. When btusb_bulk_complete returns before system suspend and resubmits an URB, the system cannot enter suspend state. Signed-off-by: Champion Chen <champion_chen@realsil.com.cn> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/btusb.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 0527b29c3954..a79d657c0845 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -331,6 +331,9 @@ static void btusb_intr_complete(struct urb *urb)
BT_ERR("%s corrupted event packet", hdev->name);
hdev->stat.err_rx++;
}
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
}
if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
@@ -419,6 +422,9 @@ static void btusb_bulk_complete(struct urb *urb)
BT_ERR("%s corrupted ACL packet", hdev->name);
hdev->stat.err_rx++;
}
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
}
if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
@@ -513,6 +519,9 @@ static void btusb_isoc_complete(struct urb *urb)
hdev->stat.err_rx++;
}
}
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
}
if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))