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authorMartin Kepplinger <martink@posteo.de>2016-07-19 14:25:00 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2016-07-19 14:33:05 -0700
commit9d3bef0be57d06fea442f17c95011f3530ff3ff8 (patch)
treec380c19cdc8a9b24f8b35bc77181db48480e87d1 /drivers/input/tablet
parent168c1398e0660eafd70597a06cdd68c179e8f30b (diff)
Input: pegasus_notetaker - fix usb_autopm calls to be balanced
We should only "put" the interface if submitting URB or setting tablet mode in pegasus_open() fails, otherwise leave it to pegasus_close(). Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/tablet')
-rw-r--r--drivers/input/tablet/pegasus_notetaker.c33
1 files changed, 19 insertions, 14 deletions
diff --git a/drivers/input/tablet/pegasus_notetaker.c b/drivers/input/tablet/pegasus_notetaker.c
index 78dbf39a6fc0..ef5fd31abaef 100644
--- a/drivers/input/tablet/pegasus_notetaker.c
+++ b/drivers/input/tablet/pegasus_notetaker.c
@@ -209,34 +209,39 @@ static void pegasus_init(struct work_struct *work)
static int pegasus_open(struct input_dev *dev)
{
struct pegasus *pegasus = input_get_drvdata(dev);
- int retval;
+ int error;
- retval = usb_autopm_get_interface(pegasus->intf);
- if (retval)
- return retval;
+ error = usb_autopm_get_interface(pegasus->intf);
+ if (error)
+ return error;
pegasus->irq->dev = pegasus->usbdev;
- if (usb_submit_urb(pegasus->irq, GFP_KERNEL))
- retval = -EIO;
+ if (usb_submit_urb(pegasus->irq, GFP_KERNEL)) {
+ error = -EIO;
+ goto err_autopm_put;
+ }
+
+ error = pegasus_set_mode(pegasus, PEN_MODE_XY, NOTETAKER_LED_MOUSE);
+ if (error)
+ goto err_kill_urb;
- retval = pegasus_set_mode(pegasus, PEN_MODE_XY, NOTETAKER_LED_MOUSE);
+ return 0;
+err_kill_urb:
+ usb_kill_urb(pegasus->irq);
+ cancel_work_sync(&pegasus->init);
+err_autopm_put:
usb_autopm_put_interface(pegasus->intf);
-
- return retval;
+ return error;
}
static void pegasus_close(struct input_dev *dev)
{
struct pegasus *pegasus = input_get_drvdata(dev);
- int autopm_error;
- autopm_error = usb_autopm_get_interface(pegasus->intf);
usb_kill_urb(pegasus->irq);
cancel_work_sync(&pegasus->init);
-
- if (!autopm_error)
- usb_autopm_put_interface(pegasus->intf);
+ usb_autopm_put_interface(pegasus->intf);
}
static int pegasus_probe(struct usb_interface *intf,