On Wed, Nov 13, 2013 at 10:35:14PM +0800, Huang Rui wrote:
> USB 2.1 Link PM adds to use bits[1:15] according to USB 2.0 ECN Errata for
> Link Power Management spec.
>
> Bit Encoding
> 0 Reserved
> 1 LPM
> 2 BESL & Altemate HIRD definitions supported
> 3 Recommended Baseline BESL valid
> 4 Recommended Deep BESL valid
> 11:8 Recommended Baseline BESL value
> 15:12 Recommended Deep BESL value
> 31:16 Reserved
>
> So fix the bit mask from 0x1e to 0xfffe.
>
> Reported-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
Acked-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
> Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
> ---
> drivers/usb/misc/usbtest.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
> index 5ef202b..c6b0f61 100644
> --- a/drivers/usb/misc/usbtest.c
> +++ b/drivers/usb/misc/usbtest.c
> @@ -655,8 +655,8 @@ static int is_good_ext(struct usbtest_dev *tdev, u8 *buf)
> }
>
> attr = le32_to_cpu(ext->bmAttributes);
> - /* bits[1:4] is used and others are reserved */
> - if (attr & ~0x1e) { /* reserved == 0 */
> + /* bits[1:15] is used and others are reserved */
> + if (attr & ~0xfffe) { /* reserved == 0 */
> ERROR(tdev, "reserved bits set\n");
> return 0;
> }
> --
> 1.7.11.7
>
>
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