Commit 2707ca16 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman

USB: ldusb: refactor endpoint retrieval

Use the new endpoint helpers to lookup the required interrupt-in
endpoint and optional interrupt-out endpoint.

Note that the descriptors are searched in reverse order to avoid any
regressions.
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 920df8d7
...@@ -650,10 +650,9 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * ...@@ -650,10 +650,9 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id *
struct usb_device *udev = interface_to_usbdev(intf); struct usb_device *udev = interface_to_usbdev(intf);
struct ld_usb *dev = NULL; struct ld_usb *dev = NULL;
struct usb_host_interface *iface_desc; struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
char *buffer; char *buffer;
int i;
int retval = -ENOMEM; int retval = -ENOMEM;
int res;
/* allocate memory for our device state and initialize it */ /* allocate memory for our device state and initialize it */
...@@ -681,21 +680,17 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * ...@@ -681,21 +680,17 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id *
iface_desc = intf->cur_altsetting; iface_desc = intf->cur_altsetting;
/* set up the endpoint information */ res = usb_find_last_int_in_endpoint(iface_desc,
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { &dev->interrupt_in_endpoint);
endpoint = &iface_desc->endpoint[i].desc; if (res) {
if (usb_endpoint_is_int_in(endpoint))
dev->interrupt_in_endpoint = endpoint;
if (usb_endpoint_is_int_out(endpoint))
dev->interrupt_out_endpoint = endpoint;
}
if (dev->interrupt_in_endpoint == NULL) {
dev_err(&intf->dev, "Interrupt in endpoint not found\n"); dev_err(&intf->dev, "Interrupt in endpoint not found\n");
retval = res;
goto error; goto error;
} }
if (dev->interrupt_out_endpoint == NULL)
res = usb_find_last_int_out_endpoint(iface_desc,
&dev->interrupt_out_endpoint);
if (res)
dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n"); dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n");
dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint); dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint);
......
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