From: Rupesh Tatiya <rtatiya@codeaurora.org>
To: sarah.a.sharp@linux.intel.com, linux-usb@vger.kernel.org,
gregkh@linuxfoundation.org, oliver@neukum.org
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Rupesh Tatiya <rtatiya@codeaurora.org>
Subject: [PATCH v2] usb: Enable LPM for USB 2.01+ full-speed devices
Date: Tue, 14 Apr 2015 16:36:55 +0530 [thread overview]
Message-ID: <1429009615-17354-1-git-send-email-rtatiya@codeaurora.org> (raw)
In-Reply-To: <6101704ff4dc2e95b67146ed26d01c9f.squirrel@www.codeaurora.org>
USB 2.01+ full-speed devices can have extended descriptor as well
and can support LPM.
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
next prev parent reply other threads:[~2015-04-14 11:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-25 6:53 [PATCH] usb: Enable LPM for USB 2.01+ full-speed devices rtatiya
2015-03-25 6:58 ` Greg KH
[not found] ` <20150325065824.GA25520-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2015-04-08 11:27 ` rtatiya-sgV2jX0FEOL9JmXXK+q4OQ
2015-04-08 11:37 ` Greg KH
[not found] ` <6101704ff4dc2e95b67146ed26d01c9f.squirrel-mMfbam+mt9083fI46fginR2eb7JE58TQ@public.gmane.org>
2015-04-08 13:24 ` gpramod-sgV2jX0FEOL9JmXXK+q4OQ
2015-04-14 11:06 ` Rupesh Tatiya [this message]
[not found] ` <1427266399-19124-1-git-send-email-rtatiya-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-03-25 8:41 ` Oliver Neukum
2015-04-08 11:24 ` rtatiya
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