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| author | Peter Popovec <popovec@oko.fei.tuke.sk> | 2012-12-15 07:57:25 +0100 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-12-17 07:02:51 +0100 |
| commit | a455e2985f57e2a71566bb8850094af38b2c932d (patch) | |
| tree | 0504636d0a03a6a1d674ab630768a10eac1df2e8 /drivers/input/joystick | |
| parent | Input: gpio_keys_polled - switch to using gpio_request_one() (diff) | |
| download | linux-a455e2985f57e2a71566bb8850094af38b2c932d.tar.xz linux-a455e2985f57e2a71566bb8850094af38b2c932d.zip | |
Input: walkera0701 - fix crash on startup
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>
CC: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/joystick')
| -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 4dfa1eed4b7c..f8f892b076e8 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); |