Messages in this thread Patch in this message | | | From | rtatiya@codeauro ... | Subject | [PATCH] usb: Enable LPM for USB 2.01+ full-speed devices | Date | Wed, 25 Mar 2015 12:23:19 +0530 |
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From: Rupesh Tatiya <rtatiya@codeaurora.org>
USB 2.01+ full-speed devices can have extended descriptor as well and can support LPM.
Change-Id: Ic055d51c02651810d3eb7141bab20a090fe8453b Signed-off-by: Rupesh Tatiya <rtatiya@codeaurora.org> --- drivers/usb/core/hub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 9ef2d2c..1ed7b5d 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -140,7 +140,7 @@ static int usb_device_supports_lpm(struct usb_device *udev) /* USB 2.1 (and greater) devices indicate LPM support through * their USB 2.0 Extended Capabilities BOS descriptor. */ - if (udev->speed == USB_SPEED_HIGH) { + if (udev->speed == USB_SPEED_HIGH || udev->speed == USB_SPEED_FULL) { if (udev->bos->ext_cap && (USB_LPM_SUPPORT & le32_to_cpu(udev->bos->ext_cap->bmAttributes))) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
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