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Commit b60066c1 authored by David Vrabel's avatar David Vrabel Committed by David Vrabel
Browse files

uwb: add symlinks in sysfs between radio controllers and PALs 



Add a facility for PALs to have symlinks to their radio controller
(and vice-versa) and make WUSB host controllers use this.

Signed-off-by: default avatarDavid Vrabel <david.vrabel@csr.com>
parent b63795fa

drivers/usb/wusbcore/pal.c

+3 −0
Original line number Diff line number Diff line
@@ -26,6 +26,9 @@ int wusbhc_pal_register(struct wusbhc *wusbhc) 
{

	uwb_pal_init(&wusbhc->pal);



	wusbhc->pal.name   = "wusbhc";

	wusbhc->pal.device = wusbhc->usb_hcd.self.controller;



	return uwb_pal_register(wusbhc->uwb_rc, &wusbhc->pal);

}

drivers/usb/wusbcore/wusbhc.c

+9 −7
Original line number Diff line number Diff line
@@ -192,13 +192,8 @@ int wusbhc_create(struct wusbhc *wusbhc) 
	result = wusbhc_sec_create(wusbhc);

	if (result < 0)

		goto error_sec_create;

	result = wusbhc_pal_register(wusbhc);

	if (result < 0)

		goto error_pal_register;

	return 0;



error_pal_register:

	wusbhc_sec_destroy(wusbhc);

error_sec_create:

	wusbhc_rh_destroy(wusbhc);

error_rh_create:
@@ -235,7 +230,14 @@ int wusbhc_b_create(struct wusbhc *wusbhc) 
		dev_err(dev, "Cannot register WUSBHC attributes: %d\n", result);

		goto error_create_attr_group;

	}

	/* Yep, I plan to add stuff here... */



	result = wusbhc_pal_register(wusbhc);

	if (result < 0)

		goto error_pal_register;

	return 0;



error_pal_register:

	sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);

error_create_attr_group:

	return result;

}
@@ -243,13 +245,13 @@ EXPORT_SYMBOL_GPL(wusbhc_b_create); 


void wusbhc_b_destroy(struct wusbhc *wusbhc)

{

	wusbhc_pal_unregister(wusbhc);

	sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);

}

EXPORT_SYMBOL_GPL(wusbhc_b_destroy);



void wusbhc_destroy(struct wusbhc *wusbhc)

{

	wusbhc_pal_unregister(wusbhc);

	wusbhc_sec_destroy(wusbhc);

	wusbhc_rh_destroy(wusbhc);

	wusbhc_devconnect_destroy(wusbhc);

drivers/uwb/pal.c

+20 −0
Original line number Diff line number Diff line
@@ -39,6 +39,21 @@ EXPORT_SYMBOL_GPL(uwb_pal_init); 
 */

int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal)

{

	int ret;



	if (pal->device) {

		ret = sysfs_create_link(&pal->device->kobj,

					&rc->uwb_dev.dev.kobj, "uwb_rc");

		if (ret < 0)

			return ret;

		ret = sysfs_create_link(&rc->uwb_dev.dev.kobj,

					&pal->device->kobj, pal->name);

		if (ret < 0) {

			sysfs_remove_link(&pal->device->kobj, "uwb_rc");

			return ret;

		}

	}



	spin_lock(&rc->pal_lock);

	list_add(&pal->node, &rc->pals);

	spin_unlock(&rc->pal_lock);
@@ -57,6 +72,11 @@ void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal) 
	spin_lock(&rc->pal_lock);

	list_del(&pal->node);

	spin_unlock(&rc->pal_lock);



	if (pal->device) {

		sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name);

		sysfs_remove_link(&pal->device->kobj, "uwb_rc");

	}

}

EXPORT_SYMBOL_GPL(uwb_pal_unregister);

include/linux/uwb.h

+5 −1
Original line number Diff line number Diff line
@@ -361,6 +361,9 @@ struct uwb_rc { 


/**

 * struct uwb_pal - a UWB PAL

 * @name:    descriptive name for this PAL (wushc, wlp, etc.).

 * @device:  a device for the PAL.  Used to link the PAL and the radio

 *           controller in sysfs.

 * @new_rsv: called when a peer requests a reservation (may be NULL if

 *           the PAL cannot accept reservation requests).

 *
@@ -379,7 +382,8 @@ struct uwb_rc { 
 */

struct uwb_pal {

	struct list_head node;



	const char *name;

	struct device *device;

	void (*new_rsv)(struct uwb_rsv *rsv);

};