On Wed, Aug 07, 2013 at 05:18:13AM +0800, Peter Chen wrote:
> In order to increase test coverage, we can change the interval between
> two remote wakeups every time, and the interval can be any user defined
> value. This change will no affect current behavior if the user does not
> use two introduced module paramters.
>
> Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
> ---
>
> Changes for v2:
> - Change some typo and description
>
Ping.....
> drivers/usb/gadget/zero.c | 25 +++++++++++++++++++++++--
> 1 files changed, 23 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
> index 0deb9d6..21da094 100644
> --- a/drivers/usb/gadget/zero.c
> +++ b/drivers/usb/gadget/zero.c
> @@ -95,6 +95,18 @@ unsigned autoresume = DEFAULT_AUTORESUME;
> module_param(autoresume, uint, S_IRUGO);
> MODULE_PARM_DESC(autoresume, "zero, or seconds before remote wakeup");
>
> +/* Maximum Autoresume time */
> +unsigned max_autoresume;
> +module_param(max_autoresume, uint, S_IRUGO);
> +MODULE_PARM_DESC(max_autoresume, "maximum seconds before remote wakeup");
> +
> +/* Interval between two remote wakeups */
> +unsigned autoresume_interval_ms;
> +module_param(autoresume_interval_ms, uint, S_IRUGO);
> +MODULE_PARM_DESC(autoresume_interval_ms,
> + "milliseconds to increase successive wakup delays");
> +
> +static unsigned autoresume_step_ms;
> /*-------------------------------------------------------------------------*/
>
> static struct usb_device_descriptor device_desc = {
> @@ -183,8 +195,16 @@ static void zero_suspend(struct usb_composite_dev *cdev)
> return;
>
> if (autoresume) {
> - mod_timer(&autoresume_timer, jiffies + (HZ * autoresume));
> - DBG(cdev, "suspend, wakeup in %d seconds\n", autoresume);
> + if (max_autoresume &&
> + (autoresume_step_ms > max_autoresume * 1000))
> + autoresume_step_ms = autoresume * 1000;
> +
> + mod_timer(&autoresume_timer, jiffies +
> + msecs_to_jiffies(autoresume_step_ms));
> + DBG(cdev, "suspend, wakeup in %d milliseconds\n",
> + autoresume_step_ms);
> +
> + autoresume_step_ms += autoresume_interval_ms;
> } else
> DBG(cdev, "%s\n", __func__);
> }
> @@ -316,6 +336,7 @@ static int __init zero_bind(struct usb_composite_dev *cdev)
> if (autoresume) {
> sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
> loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
> + autoresume_step_ms = autoresume * 1000;
> }
>
> /* support OTG systems */
> --
> 1.7.1
>
>
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>
--
Best Regards,
Peter Chen
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