Hi Dan,
On Tue, Jun 01, 2010 at 05:27:45PM +0200, Dan Carpenter wrote:
> 1) Use msecs_to_jiffies() instead of calculating by hand.
> 2) Call cancel_delayed_work_sync() instead of cancel_delayed_work()
> followed by a separate flush_workqueue().
> 3) Remove the "tsc->wq = 0;" Sparse complains about that because
> tsc->wq is a pointer, not an int. It's not needed because we just
> free the pointer anyway.
>
> Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
>
Applied the patch, thank you, but more cleanups needed.
> diff --git a/drivers/input/touchscreen/tps6507x-ts.c b/drivers/input/touchscreen/tps6507x-ts.c
> index 5de80a1..5b70a14 100644
> --- a/drivers/input/touchscreen/tps6507x-ts.c
> +++ b/drivers/input/touchscreen/tps6507x-ts.c
> @@ -221,7 +221,7 @@ done:
>
> if (poll) {
> schd = queue_delayed_work(tsc->wq, &tsc->work,
> - tsc->poll_period * HZ / 1000);
> + msecs_to_jiffies(tsc->poll_period));
> if (schd)
I think the driver author misunderstood the return values of
queue_delayed_work().
> tsc->polling = 1;
> else {
> @@ -326,7 +326,7 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
> goto err2;
>
> schd = queue_delayed_work(tsc->wq, &tsc->work,
> - tsc->poll_period * HZ / 1000);
> + msecs_to_jiffies(tsc->poll_period));
>
> if (schd)
> tsc->polling = 1;
> @@ -339,10 +339,8 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
> return 0;
>
> err2:
> - cancel_delayed_work(&tsc->work);
> - flush_workqueue(tsc->wq);
> + cancel_delayed_work_sync(&tsc->work);
> destroy_workqueue(tsc->wq);
> - tsc->wq = 0;
> input_free_device(input_dev);
> err1:
> kfree(tsc);
> @@ -360,10 +358,8 @@ static int __devexit tps6507x_ts_remove(struct platform_device *pdev)
> if (!tsc)
> return 0;
>
> - cancel_delayed_work(&tsc->work);
> - flush_workqueue(tsc->wq);
> + cancel_delayed_work_sync(&tsc->work);
> destroy_workqueue(tsc->wq);
> - tsc->wq = 0;
>
> input_free_device(input_dev);
This should be input_unregister_device().
I also question the production utility of a driver that continuously
poll device every 30 ms... I think that it was merged prematurely,
without adequate review ;(
--
Dmitry
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