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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2012-12-16 22:59:12 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2013-01-21 17:32:01 -0800
commitcb696e7cf261e2af323d49db8839dd1cc34709dd (patch)
tree5e063f8bb28d04f54685e49bf6f1a093b4fa0d47 /drivers/input/joystick
parentea05ae071ed0f360c6002d7b5107e0dad724d511 (diff)
Input: walkera0701 - claim parport when opening the device
Postpone claiming the port until the device is opened, instead of doing that when the driver is loaded. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/joystick')
-rw-r--r--drivers/input/joystick/walkera0701.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/input/joystick/walkera0701.c b/drivers/input/joystick/walkera0701.c
index b86134c0b299..b76ac580703c 100644
--- a/drivers/input/joystick/walkera0701.c
+++ b/drivers/input/joystick/walkera0701.c
@@ -183,6 +183,9 @@ static int walkera0701_open(struct input_dev *dev)
{
struct walkera_dev *w = input_get_drvdata(dev);
+ if (parport_claim(w->pardevice))
+ return -EBUSY;
+
parport_enable_irq(w->parport);
return 0;
}
@@ -193,6 +196,8 @@ static void walkera0701_close(struct input_dev *dev)
parport_disable_irq(w->parport);
hrtimer_cancel(&w->timer);
+
+ parport_release(w->pardevice);
}
static int walkera0701_connect(struct walkera_dev *w, int parport)
@@ -227,12 +232,6 @@ static int walkera0701_connect(struct walkera_dev *w, int parport)
goto err_unregister_device;
}
- if (parport_claim(w->pardevice)) {
- pr_err("failed to claim parport\n");
- error = -EBUSY;
- goto err_unregister_device;
- }
-
hrtimer_init(&w->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
w->timer.function = timer_handler;
@@ -240,7 +239,7 @@ static int walkera0701_connect(struct walkera_dev *w, int parport)
if (!w->input_dev) {
pr_err("failed to allocate input device\n");
error = -ENOMEM;
- goto err_release_parport;
+ goto err_unregister_device;
}
input_set_drvdata(w->input_dev, w);
@@ -276,8 +275,6 @@ static int walkera0701_connect(struct walkera_dev *w, int parport)
err_free_input_dev:
input_free_device(w->input_dev);
-err_release_parport:
- parport_release(w->pardevice);
err_unregister_device:
parport_unregister_device(w->pardevice);
err_put_parport:
@@ -288,7 +285,6 @@ err_put_parport:
static void walkera0701_disconnect(struct walkera_dev *w)
{
input_unregister_device(w->input_dev);
- parport_release(w->pardevice);
parport_unregister_device(w->pardevice);
parport_put_port(w->parport);
}