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From: Greg KH <greg@kroah.com>
To: bugzilla-daemon@bugzilla.kernel.org
Cc: linux-usb@vger.kernel.org
Subject: Re: [Bug 209411] New: When retrieving string descriptor from mobile device returns eproto error
Date: Mon, 28 Sep 2020 19:49:44 +0200
Message-ID: <20200928174944.GB2172556@kroah.com> (raw)
In-Reply-To: <bug-209411-208809@https.bugzilla.kernel.org/>

On Sun, Sep 27, 2020 at 05:51:20PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=209411
> 
>             Bug ID: 209411
>            Summary: When retrieving string descriptor from mobile device
>                     returns eproto error
>            Product: Drivers
>            Version: 2.5
>     Kernel Version: 4.19
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: USB
>           Assignee: drivers_usb@kernel-bugs.kernel.org
>           Reporter: rachithas104@gmail.com
>         Regression: No
> 
> I am trying to get get string descriptor from mobile phone,however when trying
> to retrieve one particular index it returns EPROTO,
> 
> dev->fd, USB_DIR_IN,USB_REQ_GET_DESCRIPTOR,DESCRIPT_STRING * 256 + index,       
>                                               languageid, sizeof buf, buf);
> 
> Return value is -1 for  ioctl(fd, USBDEVFS_CONTROL, &ioctl_ctrl);
> 
> kernel: [ 7084.327097] usb 1-1.2: reset high-speed USB device number 12 using
> ehci-pci
> kernel: [ 7084.831056] usb 1-1.2: device not accepting address 12, error -71
> kernel: [ 7085.119075] usb 1-1.2: reset high-speed USB device number 12 using
> ehci-pci
>  kernel: [ 7085.431054] usb 1-1.2: reset high-speed USB device number 12 using
> ehci-pci
> [ 7085.935069] usb 1-1.2: device not accepting address 12, error -71
> [ 7086.227132] usb 1-1.2: reset high-speed USB device number 12 using ehci-pci
> S[ 7087.321929] usb 1-1.2: usbfs: USBDEVFS_CONTROL failed cmd ctxusb rqt 128 rq
> 6 len 255 ret -71
>   kernel: [ 7087.607093] usb 1-1.2: reset high-speed USB device number 12 using
> ehci-pci
> 
> My URB request and without my program in picture request is same

Not all strings are readable from the device, are you sure that is a
valid string descriptor index to be requesting?



  parent reply index

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-27 17:51 bugzilla-daemon
2020-09-28 17:49 ` [Bug 209411] " bugzilla-daemon
2020-09-28 17:49 ` Greg KH [this message]
2020-09-29 14:35 ` bugzilla-daemon
2020-09-29 14:38 ` bugzilla-daemon
2020-09-29 16:04 ` bugzilla-daemon
2020-09-29 16:23 ` bugzilla-daemon
2020-09-29 16:24 ` bugzilla-daemon
2020-09-29 16:40 ` bugzilla-daemon
2020-09-30 11:05 ` bugzilla-daemon
2020-09-30 11:06 ` bugzilla-daemon
2020-09-30 11:06 ` bugzilla-daemon
2020-09-30 14:47 ` bugzilla-daemon
2020-09-30 14:52 ` bugzilla-daemon
2020-09-30 14:53 ` bugzilla-daemon
2020-09-30 15:04 ` bugzilla-daemon
2020-09-30 15:15 ` bugzilla-daemon
2020-09-30 15:37 ` bugzilla-daemon
2020-09-30 15:41 ` bugzilla-daemon
2020-09-30 15:43 ` bugzilla-daemon
2020-09-30 15:44 ` bugzilla-daemon
2020-09-30 19:25 ` bugzilla-daemon
2020-10-02 16:02 ` bugzilla-daemon
2020-10-02 16:04 ` bugzilla-daemon
2020-10-02 16:46 ` bugzilla-daemon
2020-10-05 13:53 ` bugzilla-daemon
2020-10-05 14:38 ` bugzilla-daemon
2020-10-05 14:48 ` bugzilla-daemon
2020-10-07  4:54 ` bugzilla-daemon
2020-10-10 18:02 ` bugzilla-daemon
2020-10-11  1:15 ` bugzilla-daemon
2020-10-11  4:27 ` bugzilla-daemon
2020-10-11  8:13 ` bugzilla-daemon
2020-10-11 14:13 ` bugzilla-daemon
2020-10-12 12:49 ` bugzilla-daemon
2020-10-12 12:50 ` bugzilla-daemon
2020-10-12 14:47 ` bugzilla-daemon
2020-10-12 16:25 ` bugzilla-daemon
2020-10-12 16:49 ` bugzilla-daemon
2020-10-12 18:30 ` bugzilla-daemon
2020-10-12 18:50 ` bugzilla-daemon
2020-10-13  0:24 ` bugzilla-daemon
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2020-10-13 17:51 ` bugzilla-daemon
2020-10-13 17:55 ` bugzilla-daemon
2020-10-13 17:56 ` bugzilla-daemon
2020-10-13 17:58 ` bugzilla-daemon
2020-10-14  3:56 ` bugzilla-daemon
2020-10-14 13:24 ` bugzilla-daemon
2020-10-14 18:43 ` bugzilla-daemon
2020-10-14 18:49 ` bugzilla-daemon
2020-10-14 18:56 ` bugzilla-daemon

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