From 50129f74548b5075187fa4908c2ba3a081ec1b67 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 17 Mar 2017 11:35:37 +0100 Subject: USB: ftdi-elan: refactor endpoint retrieval Use the new endpoint helpers to lookup the required bulk-in and bulk-out endpoints. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/ftdi-elan.c | 42 +++++++++++++++++------------------------- 1 file changed, 17 insertions(+), 25 deletions(-) (limited to 'drivers/usb/misc') diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 01a9373b7e18..8291499d0581 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -2700,10 +2700,8 @@ static int ftdi_elan_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - size_t buffer_size; - int i; - int retval = -ENOMEM; + struct usb_endpoint_descriptor *bulk_in, *bulk_out; + int retval; struct usb_ftdi *ftdi; ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL); @@ -2720,31 +2718,25 @@ static int ftdi_elan_probe(struct usb_interface *interface, ftdi->interface = interface; mutex_init(&ftdi->u132_lock); ftdi->expected = 4; + iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - if (!ftdi->bulk_in_endpointAddr && - usb_endpoint_is_bulk_in(endpoint)) { - buffer_size = usb_endpoint_maxp(endpoint); - ftdi->bulk_in_size = buffer_size; - ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress; - ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!ftdi->bulk_in_buffer) { - retval = -ENOMEM; - goto error; - } - } - if (!ftdi->bulk_out_endpointAddr && - usb_endpoint_is_bulk_out(endpoint)) { - ftdi->bulk_out_endpointAddr = - endpoint->bEndpointAddress; - } - } - if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) { + retval = usb_find_common_endpoints(iface_desc, + &bulk_in, &bulk_out, NULL, NULL); + if (retval) { dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk-out endpoints\n"); - retval = -ENODEV; goto error; } + + ftdi->bulk_in_size = usb_endpoint_maxp(bulk_in); + ftdi->bulk_in_endpointAddr = bulk_in->bEndpointAddress; + ftdi->bulk_in_buffer = kmalloc(ftdi->bulk_in_size, GFP_KERNEL); + if (!ftdi->bulk_in_buffer) { + retval = -ENOMEM; + goto error; + } + + ftdi->bulk_out_endpointAddr = bulk_out->bEndpointAddress; + dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n", iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr, ftdi->bulk_out_endpointAddr); -- cgit v1.2.1