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Staging: ipack: Expose modalias through sysfs.

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Also include it in the hotplug event so that udev can
provide the respective driver.

Signed-off-by: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Taprogge 2012-09-04 17:01:20 +02:00 committed by Greg Kroah-Hartman
parent 4aa09d47d4
commit 35eb97bb67
1 changed files with 36 additions and 0 deletions
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36
drivers/staging/ipack/ipack.c
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@ -86,6 +86,31 @@ static int ipack_bus_remove(struct device *device)
return 0;
}
#ifdef CONFIG_HOTPLUG
static int ipack_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct ipack_device *idev;
if (!dev)
return -ENODEV;
idev = to_ipack_dev(dev);
if (add_uevent_var(env,
"MODALIAS=ipack:f%02Xv%08Xd%08X", idev->id_format,
idev->id_vendor, idev->id_device))
return -ENOMEM;
return 0;
}
#else /* !CONFIG_HOTPLUG */
#define ipack_uevent NULL
#endif /* !CONFIG_HOTPLUG */
#define ipack_device_attr(field, format_string) \
static ssize_t \
field##_show(struct device *dev, struct device_attribute *attr, \
@ -123,12 +148,22 @@ id_device_show(struct device *dev, struct device_attribute *attr, char *buf)
}
}
static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct ipack_device *idev = to_ipack_dev(dev);
return sprintf(buf, "ipac:f%02Xv%08Xd%08X", idev->id_format,
idev->id_vendor, idev->id_device);
}
ipack_device_attr(id_format, "0x%hhu\n");
static struct device_attribute ipack_dev_attrs[] = {
__ATTR_RO(id_device),
__ATTR_RO(id_format),
__ATTR_RO(id_vendor),
__ATTR_RO(modalias),
};
static struct bus_type ipack_bus_type = {
@ -137,6 +172,7 @@ static struct bus_type ipack_bus_type = {
.match = ipack_bus_match,
.remove = ipack_bus_remove,
.dev_attrs = ipack_dev_attrs,
.uevent = ipack_uevent,
};
struct ipack_bus_device *ipack_bus_register(struct device *parent, int slots,