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USB: idmouse: refactor endpoint retrieval 

Use the new endpoint helpers to lookup the required bulk-in endpoint.

Note that we now pick the first bulk-in endpoint regardless of whether
it happens to be the first descriptor.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2017-03-17 11:35:38 +01:00 committed by Greg Kroah-Hartman
parent 50129f7454
commit fa38442eaa
1 changed files with 13 additions and 17 deletions
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20
drivers/usb/misc/idmouse.c
View File

@ -357,26 +357,22 @@ static int idmouse_probe(struct usb_interface *interface,
dev->interface = interface;
/* set up the endpoint information - use only the first bulk-in endpoint */
endpoint = &iface_desc->endpoint[0].desc;
if (!dev->bulk_in_endpointAddr && usb_endpoint_is_bulk_in(endpoint)) {
/* we found a bulk in endpoint */
result = usb_find_bulk_in_endpoint(iface_desc, &endpoint);
if (result) {
dev_err(&interface->dev, "Unable to find bulk-in endpoint.\n");
idmouse_delete(dev);
return result;
}
dev->orig_bi_size = usb_endpoint_maxp(endpoint);
dev->bulk_in_size = 0x200; /* works _much_ faster */
dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
dev->bulk_in_buffer =
kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL);
dev->bulk_in_buffer = kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL);
if (!dev->bulk_in_buffer) {
idmouse_delete(dev);
return -ENOMEM;
}
}
if (!(dev->bulk_in_endpointAddr)) {
dev_err(&interface->dev, "Unable to find bulk-in endpoint.\n");
idmouse_delete(dev);
return -ENODEV;
}
/* allow device read, write and ioctl */
dev->present = 1;