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| author |   Hans de Goede <hdegoede@redhat.com> | 2013-07-12 10:04:18 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-25 12:01:12 -0700 |
| commit | 5dc50c357d5ce8f78e148d20a38e4e66b12d550f (patch) | |
| tree | 14d7ff181b9f2c4c5df485953fafe1ffccf56f50 /drivers/usb/class | |
| parent | USB: host: Use usb_hcd_platform_shutdown() wherever possible (diff) | |
| download | linux-dev-5dc50c357d5ce8f78e148d20a38e4e66b12d550f.tar.xz linux-dev-5dc50c357d5ce8f78e148d20a38e4e66b12d550f.zip | |
usbfs: Allow printer class 'get_device_id' without needing to claim the intf
For certain (HP) printers the printer device_id does not only contain a
static part identifying the printer, but it also contains a dynamic part
giving printer status, ink level, etc.
To get to this info various userspace utilities need to be able to make a
printer class 'get_device_id' request without first claiming the interface
(as that is in use for the actual printer driver).
Since the printer class 'get_device_id' request does not change interface
settings in anyway, allowing this without claiming the interface should not
cause any issues.
CC: Sanjay Kumar <sanjay.kumar14@hp.com>
CC: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/class')
0 files changed, 0 insertions, 0 deletions