diff options
| author | Peter Popovec <popovec@oko.fei.tuke.sk> | 2012-12-14 22:57:25 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-11 09:06:56 -0800 |
| commit | c815c83dfd1aef11d4197dc46b21a2471b81af2c (patch) | |
| tree | 2a27444c361e8a40a3b4828091b9cbb289e242dd | |
| parent | 042cf2fb1d2ac4b4b27b2ccc4ac317a2f53df3c3 (diff) | |
Input: walkera0701 - fix crash on startup
commit a455e2985f57e2a71566bb8850094af38b2c932d upstream.
The driver's timer must be set up before enabling IRQ handler, otherwise
bad things may happen.
Reported-and-tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Peter Popovec <popovec@fei.tuke.sk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/input/joystick/walkera0701.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/input/joystick/walkera0701.c b/drivers/input/joystick/walkera0701.c index 4dfa1eed4b7..f8f892b076e 100644 --- a/drivers/input/joystick/walkera0701.c +++ b/drivers/input/joystick/walkera0701.c @@ -196,6 +196,7 @@ static void walkera0701_close(struct input_dev *dev) struct walkera_dev *w = input_get_drvdata(dev); parport_disable_irq(w->parport); + hrtimer_cancel(&w->timer); } static int walkera0701_connect(struct walkera_dev *w, int parport) @@ -224,6 +225,9 @@ static int walkera0701_connect(struct walkera_dev *w, int parport) if (parport_claim(w->pardevice)) goto init_err1; + hrtimer_init(&w->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + w->timer.function = timer_handler; + w->input_dev = input_allocate_device(); if (!w->input_dev) goto init_err2; @@ -254,8 +258,6 @@ static int walkera0701_connect(struct walkera_dev *w, int parport) if (err) goto init_err3; - hrtimer_init(&w->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - w->timer.function = timer_handler; return 0; init_err3: @@ -271,7 +273,6 @@ static int walkera0701_connect(struct walkera_dev *w, int parport) static void walkera0701_disconnect(struct walkera_dev *w) { - hrtimer_cancel(&w->timer); input_unregister_device(w->input_dev); parport_release(w->pardevice); parport_unregister_device(w->pardevice); |