diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2010-03-29 06:03:17 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-20 16:21:32 -0400 |
| commit | 317149c655defedfaf432143b86a720cfc12a424 (patch) | |
| tree | c9834f9813e14b595c93da5d7ceb718af39d1c5d /include/linux/usb | |
| parent | 7f0ae3a8eeb7f231dc99cee7c871ba64e07ebefe (diff) | |
USB: Add a new quirk: USB_QUIRK_HONOR_BNUMINTERFACES
Add a new quirk USB_QUIRK_HONOR_BNUMINTERFACES, when this quirk is
set and a device has more interface descriptors in a configuration
then it claims to have in config->bNumInterfaces, ignore all additional
interfaces.
This is needed for devices which try to hide unused interfaces by only
lowering config->bNumInterfaces, and which can't handle if you try to talk
to the "hidden" interfaces.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/quirks.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h index 0a555dd131fc..16b7f3347545 100644 --- a/include/linux/usb/quirks.h +++ b/include/linux/usb/quirks.h | |||
| @@ -22,4 +22,8 @@ | |||
| 22 | /*device will morph if reset, don't use reset for handling errors */ | 22 | /*device will morph if reset, don't use reset for handling errors */ |
| 23 | #define USB_QUIRK_RESET_MORPHS 0x00000010 | 23 | #define USB_QUIRK_RESET_MORPHS 0x00000010 |
| 24 | 24 | ||
| 25 | /* device has more interface descriptions than the bNumInterfaces count, | ||
| 26 | and can't handle talking to these interfaces */ | ||
| 27 | #define USB_QUIRK_HONOR_BNUMINTERFACES 0x00000020 | ||
| 28 | |||
| 25 | #endif /* __LINUX_USB_QUIRKS_H */ | 29 | #endif /* __LINUX_USB_QUIRKS_H */ |