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Bluetooth: Make hidp_get_raw_report abort if the session is terminating 

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 changes enables
it to fail straight away.

Signed-off-by: Karl Relton <karllinuxtest.relton@ntlworld.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Karl Relton 2013-02-20 18:16:19 +00:00 committed by Gustavo Padovan
parent bed7174834
commit fd86c9becc
1 changed files with 4 additions and 0 deletions
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4
net/bluetooth/hidp/core.c
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@ -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;
@ -722,6 +725,7 @@ static int hidp_session(void *arg)
set_current_state(TASK_INTERRUPTIBLE);
}
set_current_state(TASK_RUNNING);
atomic_inc(&session->terminate);
remove_wait_queue(sk_sleep(intr_sk), &intr_wait);
remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait);