diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2010-03-29 12:03:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-20 13:21:32 -0700 |
| commit | 317149c655defedfaf432143b86a720cfc12a424 (patch) | |
| tree | c9834f9813e14b595c93da5d7ceb718af39d1c5d /include | |
| 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')
| -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 0a555dd131f..16b7f334754 100644 --- a/include/linux/usb/quirks.h +++ b/include/linux/usb/quirks.h @@ -22,4 +22,8 @@ /*device will morph if reset, don't use reset for handling errors */ #define USB_QUIRK_RESET_MORPHS 0x00000010 +/* device has more interface descriptions than the bNumInterfaces count, + and can't handle talking to these interfaces */ +#define USB_QUIRK_HONOR_BNUMINTERFACES 0x00000020 + #endif /* __LINUX_USB_QUIRKS_H */ |