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Commit 51fa9147 authored by Vijay Kumar's avatar Vijay Kumar Committed by Greg Kroah-Hartman
Browse files

usb/core: Added devspec sysfs entry for devices behind the usb hub 



Grub finds incorrect of_node path for devices behind usb hub.
Added devspec sysfs entry for devices behind usb hub so that
right of_node path is returned during grub sysfs walk for these
devices.

Signed-off-by: default avatarVijay Kumar <vijay.ac.kumar@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6110c425

drivers/usb/core/sysfs.c

+15 −0
Original line number Original line Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/string.h>

#include <linux/string.h>

#include <linux/usb.h>

#include <linux/usb.h>

#include <linux/usb/quirks.h>

#include <linux/usb/quirks.h>

#include <linux/of.h>

#include "usb.h"

#include "usb.h"





/* Active configuration fields */

/* Active configuration fields */
@@ -104,6 +105,17 @@ static ssize_t bConfigurationValue_store(struct device *dev, 
static DEVICE_ATTR_IGNORE_LOCKDEP(bConfigurationValue, S_IRUGO | S_IWUSR,

static DEVICE_ATTR_IGNORE_LOCKDEP(bConfigurationValue, S_IRUGO | S_IWUSR,

		bConfigurationValue_show, bConfigurationValue_store);

		bConfigurationValue_show, bConfigurationValue_store);





#ifdef CONFIG_OF

static ssize_t devspec_show(struct device *dev, struct device_attribute *attr,

			    char *buf)

{

	struct device_node *of_node = dev->of_node;



	return sprintf(buf, "%s\n", of_node_full_name(of_node));

}

static DEVICE_ATTR_RO(devspec);

#endif



/* String fields */

/* String fields */

#define usb_string_attr(name)						\

#define usb_string_attr(name)						\

static ssize_t  name##_show(struct device *dev,				\

static ssize_t  name##_show(struct device *dev,				\
@@ -786,6 +798,9 @@ static struct attribute *dev_attrs[] = { 
	&dev_attr_remove.attr,

	&dev_attr_remove.attr,

	&dev_attr_removable.attr,

	&dev_attr_removable.attr,

	&dev_attr_ltm_capable.attr,

	&dev_attr_ltm_capable.attr,

#ifdef CONFIG_OF

	&dev_attr_devspec.attr,

#endif

	NULL,

	NULL,

};

};

static struct attribute_group dev_attr_grp = {

static struct attribute_group dev_attr_grp = {