diff options
| author | Vijay Kumar <vijay.ac.kumar@oracle.com> | 2016-10-06 12:06:11 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-27 16:59:59 +0200 |
| commit | 51fa91475e431e75b802dbab7c056f2829dc9410 (patch) | |
| tree | 90d0a6a2e09d3acabc015123cd1273a80552962c /drivers/usb | |
| parent | 6110c425d98b7ed036bba3670e635a9363dd072e (diff) | |
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: Vijay Kumar <vijay.ac.kumar@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/sysfs.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index c953a0f1c695..84d66d573196 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -14,6 +14,7 @@ #include <linux/string.h> #include <linux/usb.h> #include <linux/usb/quirks.h> +#include <linux/of.h> #include "usb.h" /* 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, 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 */ #define usb_string_attr(name) \ static ssize_t name##_show(struct device *dev, \ @@ -786,6 +798,9 @@ static struct attribute *dev_attrs[] = { &dev_attr_remove.attr, &dev_attr_removable.attr, &dev_attr_ltm_capable.attr, +#ifdef CONFIG_OF + &dev_attr_devspec.attr, +#endif NULL, }; static struct attribute_group dev_attr_grp = { |