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SubjectRe: [PATCH 2/2] usb: xhci: fix timeout for transition from RExit to U0
On Mon, Oct 22, 2018 at 01:08:45AM +0800, Aaron Ma wrote:
> This definition is used by msecs_to_jiffies in milliseconds.
> According to the comments, max rexit timeout should be 20ms.
> Align with the comments to properly calculate the delay.
>
> Verified on Sunrise Point-LP and Cannon Lake.
>
> Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
> ---
> drivers/usb/host/xhci.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
> index 6230a578324c..30225c53be1c 100644
> --- a/drivers/usb/host/xhci.h
> +++ b/drivers/usb/host/xhci.h
> @@ -1678,7 +1678,7 @@ struct xhci_bus_state {
> * It can take up to 20 ms to transition from RExit to U0 on the
> * Intel Lynx Point LP xHCI host.
> */
> -#define XHCI_MAX_REXIT_TIMEOUT (20 * 1000)
> +#define XHCI_MAX_REXIT_TIMEOUT 20

Can we put the units in the #define itself so that this will be more
obvious in the future? Like XHCI_MAX_REXIT_TIMEOUT_MS?

thanks,

greg k-h

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