diff options
Diffstat (limited to 'drivers/usb/misc/usbtest.c')
| -rw-r--r-- | drivers/usb/misc/usbtest.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 268148de9714..8b4ca1cb450a 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -13,6 +13,12 @@ /*-------------------------------------------------------------------------*/ +static int override_alt = -1; +module_param_named(alt, override_alt, int, 0644); +MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection"); + +/*-------------------------------------------------------------------------*/ + /* FIXME make these public somewhere; usbdevfs.h? */ struct usbtest_param { /* inputs */ @@ -103,6 +109,10 @@ get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) iso_in = iso_out = NULL; alt = intf->altsetting + tmp; + if (override_alt >= 0 && + override_alt != alt->desc.bAlternateSetting) + continue; + /* take the first altsetting with in-bulk + out-bulk; * ignore other endpoints and altsettings. */ @@ -144,6 +154,7 @@ try_iso: found: udev = testdev_to_usbdev(dev); + dev->info->alt = alt->desc.bAlternateSetting; if (alt->desc.bAlternateSetting != 0) { tmp = usb_set_interface(udev, alt->desc.bInterfaceNumber, @@ -2280,7 +2291,7 @@ usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id) wtest = " intr-out"; } } else { - if (info->autoconf) { + if (override_alt >= 0 || info->autoconf) { int status; status = get_endpoints(dev, intf); |