From: Karl Relton <karllinuxtest.relton@xxxxxxxxxxxx>
After linux 3.2 the hid_destroy_device call in hidp_session cleaning up
invokes a hook to the power_supply code which in turn tries to read the
battery capacity. This read will trigger a call to hidp_get_raw_report
which is bound to fail because the device is being taken away - so rather
than wait for the 5 second timeout failure this change enables it to fail
straight away.
Signed-off-by: Karl Relton <karllinuxtest.relton@xxxxxxxxxxxx>
---
net/bluetooth/hidp/core.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index b2bcbe2..a4c1bb0 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -311,6 +311,9 @@ static int hidp_get_raw_report(struct hid_device *hid,
int numbered_reports = hid->report_enum[report_type].numbered;
int ret;
+ if (atomic_read(&session->terminate))
+ return -EIO;
+
switch (report_type) {
case HID_FEATURE_REPORT:
report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE;
@@ -695,8 +698,10 @@ static int hidp_session(void *arg)
set_current_state(TASK_INTERRUPTIBLE);
while (!atomic_read(&session->terminate)) {
if (ctrl_sk->sk_state != BT_CONNECTED ||
- intr_sk->sk_state != BT_CONNECTED)
+ intr_sk->sk_state != BT_CONNECTED) {
+ atomic_inc(&session->terminate);
break;
+ }
while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) {
skb_orphan(skb);
--
1.7.9.5
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