Hi Roger,
On Wed, Apr 30, 2014 at 03:36:27PM +0300, Roger Quadros wrote:
> +static int pixcir_stop(struct pixcir_i2c_ts_data *ts)
> +{
> + struct device *dev = &ts->client->dev;
> + int ret;
> +
> + /* exit ISR if running, no more report parsing */
> + ts->exiting = true;
> + mb(); /* update status before we synchronize irq */
> +
> + /* disable ISR from running again */
> + disable_irq(ts->client->irq);
> +
> + /* wait till running ISR complete */
> + synchronize_irq(ts->client->irq);
> +
> + /* disable interrupt generation */
> + ret = pixcir_int_enable(ts, 0);
> + if (ret)
> + dev_err(dev, "Failed to disable interrupt generation\n");
> +
> + /* restore IRQ */
> + enable_irq(ts->client->irq);
> +
> + return ret;
Should not this be:
pixcir_int_enable(ts, 0);
ts->exiting = true;
mb();
synchronize_irq(ts->client->irq);
Why do we also need to disable/enable irq?
By the way, disable_irq() implies synchronize_irq().
Thanks.
--
Dmitry
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