3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peter Popovec <popo...@oko.fei.tuke.sk>
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...@intel.com>
Signed-off-by: Peter Popovec <popo...@fei.tuke.sk>
Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/input/joystick/walkera0701.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/input/joystick/walkera0701.c
b/drivers/input/joystick/walkera0701.c
index 4dfa1ee..f8f892b 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);
--
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