Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752940Ab3J3BlK (ORCPT ); Tue, 29 Oct 2013 21:41:10 -0400 Received: from mail-wg0-f44.google.com ([74.125.82.44]:63505 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752050Ab3J3BlI (ORCPT ); Tue, 29 Oct 2013 21:41:08 -0400 MIME-Version: 1.0 In-Reply-To: References: <20131028150250.755b4cc8@voldemort.scrye.com> Date: Wed, 30 Oct 2013 09:41:06 +0800 Message-ID: Subject: Re: ELAN Touchscreen regression in recent 3.12 rc's? (USB) From: AceLan Kao To: Josh Boyer Cc: Kevin Fenzi , "Linux-Kernel@Vger. Kernel. Org" , Jiri Kosina , Nikolai Kondrashov Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4230 Lines: 86 Hi, It's hard to believe that those quirks will lead to the problem. And actually, there are 4 new commits introduced to -rc7, and 3 of them are quirks. % git log --pretty=oneline v3.12-rc6..v3.12-rc7 drivers/hid 86b84167d4e67372376a57ea9955c5d53dae232f HID: wiimote: add LEGO-wiimote VID ad0e669b922c7790182cf19f8015b30e23ad9499 HID: Fix unit exponent parsing again 684524d35fe8d13be1f2649633e43bd02c96c695 HID: usbhid: quirk for SiS Touchscreen 8171a67d587a09e14a4949a81e070345fedcf410 HID: usbhid: quirk for Synaptics Large Touchccreen CC'd Nikolai, since his commit changes the protocol. Best regards, AceLan Kao. 2013/10/29 Josh Boyer : > On Mon, Oct 28, 2013 at 5:02 PM, Kevin Fenzi wrote: >> Greetings. >> >> I have a lenovo yoga 2 pro.. it has a ELAN Touchscreen. >> >> In 3.12rc5 it was detected and works. >> in 3.12rc6 it was detected and works. >> >> Sometime after the rc6 timeframe it stopped working. It doesn't work with >> rc7. >> >> In dmesg I get: >> >> [ 159.519663] usb 2-7: New USB device found, idVendor=04f3, idProduct=016f >> [ 159.519681] usb 2-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0 >> [ 159.519683] usb 2-7: Product: Touchscreen >> [ 159.519685] usb 2-7: Manufacturer: ELAN >> [ 159.519901] usb 2-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes >> [ 159.528027] input: ELAN Touchscreen as /devices/pci0000:00/0000:00:14.0/usb2/2-7/2-7:1.0/input/input20 >> [ 159.528544] hid-multitouch 0003:04F3:016F.000A: input,hiddev0,hidraw1: USB HID v1.10 Device [ELAN Touchscreen] on usb-0000:00:14.0-7/input0 >> [ 161.601423] usb 2-7: USB disconnect, device number 71 >> [ 161.896828] usb 2-7: new full-speed USB device number 72 using xhci_hcd >> [ 163.991296] usb 2-7: unable to read config index 0 descriptor/start: -71 >> [ 163.991301] usb 2-7: can't read configurations, error -71 >> [ 164.143686] usb 2-7: new full-speed USB device number 73 using xhci_hcd >> [ 166.239273] usb 2-7: unable to read config index 0 descriptor/start: -71 >> [ 166.239278] usb 2-7: can't read configurations, error -71 >> [ 166.392576] usb 2-7: new full-speed USB device number 74 using xhci_hcd >> [ 168.487051] usb 2-7: unable to read config index 0 descriptor/start: -71 >> [ 168.487058] usb 2-7: can't read configurations, error -71 >> [ 168.640308] usb 2-7: new full-speed USB device number 75 using xhci_hcd >> [ 170.734850] usb 2-7: unable to read config index 0 descriptor/start: -71 >> [ 170.734856] usb 2-7: can't read configurations, error -71 >> [ 170.734927] hub 2-0:1.0: unable to enumerate USB device on port 7 >> [ 171.022134] usb 2-7: new full-speed USB device number 76 using xhci_hcd >> [ 173.116744] usb 2-7: unable to read config index 0 descriptor/start: -71 >> [ 173.116750] usb 2-7: can't read configurations, error -71 >> [ 173.269840] usb 2-7: new full-speed USB device number 77 using xhci_hcd >> [ 173.282520] usb 2-7: New USB device found, idVendor=04f3, idProduct=016f >> [ 173.282526] usb 2-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0 >> [ 173.282528] usb 2-7: Product: Touchscreen >> [ 173.282530] usb 2-7: Manufacturer: ELAN >> [ 173.282782] usb 2-7: ep 0x2 - rounding interval to 64 microframes, ep desc says 80 microframes >> [ 173.290920] input: ELAN Touchscreen >> as /devices/pci0000:00/0000:00:14.0/usb2/2-7/2-7:1.0/input/input21 >> >> So it seems to be bouncing in and out (but never long enough to actually work). >> >> Could be a regression in xhci_hcd? > > Hm. There were no changes in drivers/usb from -rc6 to -rc7, so if > -rc6 works then I doubt it's xhci_hcd. There were two touchscreen > quirks added between those two rcs though, so perhaps one of those > broke this. > > 684524d35fe8d13be1f2649633e43bd02c96c695 HID: usbhid: quirk for SiS Touchscreen > 8171a67d587a09e14a4949a81e070345fedcf410 HID: usbhid: quirk for > Synaptics Large Touchccreen > > CC'd AceLan and Jiri. > > josh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/