Messages in this thread | | | Subject | Re: [linux-usb-devel] usb sysfs intf files no longer created when probe fails | From | Stelian Pop <> | Date | Wed, 22 Jun 2005 20:33:25 +0200 |
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Le mercredi 22 juin 2005 à 12:03 -0400, Alan Stern a écrit : > On Wed, 22 Jun 2005, Stelian Pop wrote: > > > Notice the '1-2:1.1' is missing. Upon booting I get: > > > > Jun 22 13:34:04 localhost kernel: HID device not claimed by input or hiddev > > Jun 22 13:34:04 localhost kernel: usbhid: probe of 1-2:1.1 failed with error -5 > > Jun 22 13:34:04 localhost kernel: usb 1-2: device_add(1-2:1.1) --> -5
> You shouldn't call usb_create_sysfs_intf_files in any case.
Ok.
> Your driver is returning -EIO from its probe routine according to the log, > so it's not getting bound to the device.
Actually that's usbhid which returns -EIO.
> Hence there shouldn't be any > attempt to unbind the device when your driver is removed. This is a bug > in usbcore; it tries to delete all the interfaces without checking whether > they were successfully added.
Since this is fixed by reverting the device_add patch, I'm wondering if this isn't a driver model core bug, where it tries to device_remove all the "devices" even if they weren't correctly added before...
But I haven't looked closely at the code, this is just a thought.
Stelian. -- Stelian Pop <stelian@popies.net>
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