From 9b297faabe3fc35741746aca39128fbb12e28113 Mon Sep 17 00:00:00 2001 From: Li Jun Date: Wed, 12 Nov 2014 15:16:33 +0800 Subject: [PATCH] MLK-9829 usb: core: print suggested message if failed to get device descriptor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is required for USB OTG and EH compliance test 6.7.22(A-UUT “Device No Response” for connection timeout). When the connected usb device(PET) does not response to transactions, host will fail to get device descriptor. Signed-off-by: Li Jun (cherry picked from commit 86d0bd661ecbbdf97dd9a8ddbaf0d3811de7f39e) (cherry picked from commit 858af83637291d2ececfc7b2b4b17e3a371b53f3) --- drivers/usb/core/hub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4728,7 +4728,8 @@ hub_port_init(struct usb_hub *hub, struc } if (r) { if (r != -ENODEV) - dev_err(&udev->dev, "device descriptor read/64, error %d\n", + dev_err(&udev->dev, + "device no response, device descriptor read/64, error %d\n", r); retval = -EMSGSIZE; continue;