Re: [PATCH] Input: adp5588-keys: cancel workqueue in failure path

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On 10/07/2014 09:30 AM, Pramod Gurav wrote:
This change introduces a label to call cancel_delayed_work_sync in
failure path.

Cc: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: linux-input@xxxxxxxxxxxxxxx
Signed-off-by: Pramod Gurav <pramod.gurav@xxxxxxxxxxxxxxx>

The interrupt triggers the work queue. adp5588_setup() enable the HW interrupt.
Only if the device was configured before, without being resetb -
The earliest point in time where a problem could happen - is after the request_irq().

Anyways patch below doesn't harm and fixes a potential problem.

Acked-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>

---
  drivers/input/keyboard/adp5588-keys.c |    4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
index 5ef7fcf..b494062 100644
--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c
@@ -559,7 +559,7 @@ static int adp5588_probe(struct i2c_client *client,
  	error = input_register_device(input);
  	if (error) {
  		dev_err(&client->dev, "unable to register input device\n");
-		goto err_free_mem;
+		goto err_delayed_work;
  	}
error = request_irq(client->irq, adp5588_irq,
@@ -592,6 +592,8 @@ static int adp5588_probe(struct i2c_client *client,
   err_unreg_dev:
  	input_unregister_device(input);
  	input = NULL;
+ err_delayed_work:
+	cancel_delayed_work_sync(&kpad->work);
   err_free_mem:
  	input_free_device(input);
  	kfree(kpad);


--
Greetings,
Michael

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