usb-host: restrict workaround to new libusb versions

Fixes build failures with old kernels (USBDEVFS_GET_SPEED missing),
on the assumtion that distros with old kernels also have old libusb.

Reported-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200902081445.3291-1-kraxel@redhat.com>
Message-Id: <20200909112742.25730-3-alex.bennee@linaro.org>
This commit is contained in:
Gerd Hoffmann 2020-09-09 12:27:33 +01:00 committed by Alex Bennée
parent bc3bde8448
commit 4969e697c1
1 changed files with 1 additions and 1 deletions

View File

@ -942,7 +942,7 @@ static int usb_host_open(USBHostDevice *s, libusb_device *dev, int hostfd)
usb_host_ep_update(s);
libusb_speed = libusb_get_device_speed(dev);
#ifdef CONFIG_LINUX
#if LIBUSB_API_VERSION >= 0x01000107 && defined(CONFIG_LINUX)
if (hostfd && libusb_speed == 0) {
/*
* Workaround libusb bug: libusb_get_device_speed() does not