Use the new endpoint helpers to lookup the required interrupt-in and
interrupt-out endpoints.
Note that the descriptors are searched in reverse order to avoid any
regressions.
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/usb/misc/legousbtower.c | 29 +++++++----------------------
1 file changed, 7 insertions(+), 22 deletions(-)
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 322a042d6e59..201c9c3effbb 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -806,10 +806,7 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
struct device *idev = &interface->dev;
struct usb_device *udev = interface_to_usbdev(interface);
struct lego_usb_tower *dev = NULL;
- struct usb_host_interface *iface_desc;
- struct usb_endpoint_descriptor* endpoint;
struct tower_get_version_reply get_version_reply;
- int i;
int retval = -ENOMEM;
int result;
@@ -846,25 +843,13 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
dev->interrupt_out_urb = NULL;
dev->interrupt_out_busy = 0;
- iface_desc = interface->cur_altsetting;
-
- /* set up the endpoint information */
- for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
- endpoint = &iface_desc->endpoint[i].desc;
-
- if (usb_endpoint_xfer_int(endpoint)) {
- if (usb_endpoint_dir_in(endpoint))
- dev->interrupt_in_endpoint = endpoint;
- else
- dev->interrupt_out_endpoint = endpoint;
- }
- }
- if(dev->interrupt_in_endpoint == NULL) {
- dev_err(idev, "interrupt in endpoint not found\n");
- goto error;
- }
- if (dev->interrupt_out_endpoint == NULL) {
- dev_err(idev, "interrupt out endpoint not found\n");
+ result = usb_find_common_endpoints_reverse(interface->cur_altsetting,
+ NULL, NULL,
+ &dev->interrupt_in_endpoint,
+ &dev->interrupt_out_endpoint);
+ if (result) {
+ dev_err(idev, "interrupt endpoints not found\n");
+ retval = result;
goto error;
}
--
2.12.0
--
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