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Commit cb42b63d authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
Browse files

cdc-acm: beautify probe() 



This removes some overly long lines by renaming variables and giving
them local scope.

Signed-off-by: default avatarOliver Neukum <oneukum@suse.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7fae7bfb

drivers/usb/class/cdc-acm.c

+24 −20
Original line number Diff line number Diff line
@@ -1146,8 +1146,7 @@ static int acm_probe(struct usb_interface *intf, 
		     const struct usb_device_id *id)

{

	struct usb_cdc_union_desc *union_header = NULL;

	struct usb_cdc_country_functional_desc *cfd = NULL;

	struct usb_cdc_call_mgmt_descriptor *cmd = NULL;

	struct usb_cdc_call_mgmt_descriptor *cmgmd = NULL;

	unsigned char *buffer = intf->altsetting->extra;

	int buflen = intf->altsetting->extralen;

	struct usb_interface *control_interface;
@@ -1156,13 +1155,13 @@ static int acm_probe(struct usb_interface *intf, 
	struct usb_endpoint_descriptor *epread = NULL;

	struct usb_endpoint_descriptor *epwrite = NULL;

	struct usb_device *usb_dev = interface_to_usbdev(intf);

	struct usb_cdc_parsed_header hdr;

	struct usb_cdc_parsed_header h;

	struct acm *acm;

	int minor;

	int ctrlsize, readsize;

	u8 *buf;

	int call_interface_num = -1;

	int data_interface_num = -1;

	int call_intf_num = -1;

	int data_intf_num = -1;

	unsigned long quirks;

	int num_rx_buf;

	int i;
@@ -1209,20 +1208,22 @@ static int acm_probe(struct usb_interface *intf, 
		}

	}



	cdc_parse_cdc_header(&hdr, intf, buffer, buflen);

	union_header = hdr.usb_cdc_union_desc;

	cmd = hdr.usb_cdc_call_mgmt_descriptor;

	if (cmd)

		call_interface_num = cmd->bDataInterface;

	cdc_parse_cdc_header(&h, intf, buffer, buflen);

	union_header = h.usb_cdc_union_desc;

	cmgmd = h.usb_cdc_call_mgmt_descriptor;

	if (cmgmd)

		call_intf_num = cmgmd->bDataInterface;



	if (!union_header) {

		if (call_interface_num > 0) {

		if (call_intf_num > 0) {

			dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");

			/* quirks for Droids MuIn LCD */

			if (quirks & NO_DATA_INTERFACE)

			if (quirks & NO_DATA_INTERFACE) {

				data_interface = usb_ifnum_to_if(usb_dev, 0);

			else

				data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));

			} else {

				data_intf_num = call_intf_num;

				data_interface = usb_ifnum_to_if(usb_dev, data_intf_num);

			}

			control_interface = intf;

		} else {

			if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
@@ -1236,8 +1237,9 @@ static int acm_probe(struct usb_interface *intf, 
			}

		}

	} else {

		data_intf_num = union_header->bSlaveInterface0;

		control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);

		data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));

		data_interface = usb_ifnum_to_if(usb_dev, data_intf_num);

	}



	if (!control_interface || !data_interface) {
@@ -1245,7 +1247,7 @@ static int acm_probe(struct usb_interface *intf, 
		return -ENODEV;

	}



	if (data_interface_num != call_interface_num)

	if (data_intf_num != call_intf_num)

		dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");



	if (control_interface == data_interface) {
@@ -1340,8 +1342,8 @@ static int acm_probe(struct usb_interface *intf, 
	acm->data = data_interface;

	acm->minor = minor;

	acm->dev = usb_dev;

	if (hdr.usb_cdc_acm_descriptor)

		acm->ctrl_caps = hdr.usb_cdc_acm_descriptor->bmCapabilities;

	if (h.usb_cdc_acm_descriptor)

		acm->ctrl_caps = h.usb_cdc_acm_descriptor->bmCapabilities;

	if (quirks & NO_CAP_LINE)

		acm->ctrl_caps &= ~USB_CDC_CAP_LINE;

	acm->ctrlsize = ctrlsize;
@@ -1435,8 +1437,10 @@ static int acm_probe(struct usb_interface *intf, 
	if (i < 0)

		goto alloc_fail7;



	cfd = hdr.usb_cdc_country_functional_desc;

	if (cfd) { /* export the country data */

	if (h.usb_cdc_country_functional_desc) { /* export the country data */

		struct usb_cdc_country_functional_desc * cfd =

					h.usb_cdc_country_functional_desc;



		acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);

		if (!acm->country_codes)

			goto skip_countries;