Use the new endpoint helpers to lookup the required bulk-in and bulk-out
endpoints.
Signed-off-by: Johan Hovold <jo...@kernel.org>
---
drivers/usb/misc/ftdi-elan.c | 42 +++++++++++++++++-------------------------
1 file changed, 17 insertions(+), 25 deletions(-)
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);
--
2.12.0
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
