| commit | 1294ca797c6bee39d4dbc3e92010873ce4047e0e | |
| author | Hans de Goede <hdegoede@redhat.com> | |
| Tue, 8 Oct 2013 19:58:07 +0000 (8 21:58 +0200) | ||
| committer | Gerd Hoffmann <kraxel@redhat.com> | |
| Tue, 22 Oct 2013 14:28:49 +0000 (22 16:28 +0200) | ||
| tree | 8780bb551509105c0ab7a9b066633e32993cbb22 | treesnapshot (tar.gz zip) |
| parent | 5af35d7feccaa7d26b72c6c3d14116421d736b36 | commitdiff |
usb-host-libusb: Configuration 0 may be a valid configuration
Quoting from: linux/Documentation/ABI/stable/sysfs-bus-usb:
Note that some devices, in violation of the USB spec, have a
configuration with a value equal to 0. Writing 0 to
bConfigurationValue for these devices will install that
configuration, rather then unconfigure the device.
So don't compare the configuration value against 0 to check for unconfigured
devices, instead check for a LIBUSB_ERROR_NOT_FOUND return from
libusb_get_active_config_descriptor().
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Quoting from: linux/Documentation/ABI/stable/sysfs-bus-usb:
Note that some devices, in violation of the USB spec, have a
configuration with a value equal to 0. Writing 0 to
bConfigurationValue for these devices will install that
configuration, rather then unconfigure the device.
So don't compare the configuration value against 0 to check for unconfigured
devices, instead check for a LIBUSB_ERROR_NOT_FOUND return from
libusb_get_active_config_descriptor().
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| hw/usb/host-libusb.c | diffblobblamehistory |