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Input: serio - add modalias attribute and environment variable to 

simplify hotplug scripts.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2005-06-30 00:48:34 -05:00
parent 0048e6030d
commit ae87dff7ca
1 changed files with 26 additions and 16 deletions
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42
drivers/input/serio/serio.c
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@ -389,6 +389,14 @@ static ssize_t serio_show_description(struct device *dev, struct device_attribut
return sprintf(buf, "%s\n", serio->name);
}
static ssize_t serio_show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
{
struct serio *serio = to_serio_port(dev);
return sprintf(buf, "serio:ty%02Xpr%02Xid%02Xex%02X\n",
serio->id.type, serio->id.proto, serio->id.id, serio->id.extra);
}
static ssize_t serio_show_id_type(struct device *dev, struct device_attribute *attr, char *buf)
{
struct serio *serio = to_serio_port(dev);
@ -487,6 +495,7 @@ static ssize_t serio_set_bind_mode(struct device *dev, struct device_attribute *
static struct device_attribute serio_device_attrs[] = {
__ATTR(description, S_IRUGO, serio_show_description, NULL),
__ATTR(modalias, S_IRUGO, serio_show_modalias, NULL),
__ATTR(drvctl, S_IWUSR, NULL, serio_rebind_driver),
__ATTR(bind_mode, S_IWUSR | S_IRUGO, serio_show_bind_mode, serio_set_bind_mode),
__ATTR_NULL
@ -785,36 +794,37 @@ static int serio_bus_match(struct device *dev, struct device_driver *drv)
#ifdef CONFIG_HOTPLUG
#define PUT_ENVP(fmt, val) \
do { \
envp[i++] = buffer; \
length += snprintf(buffer, buffer_size - length, fmt, val); \
if (buffer_size - length <= 0 || i >= num_envp) \
return -ENOMEM; \
length++; \
buffer += length; \
} while (0)
#define SERIO_ADD_HOTPLUG_VAR(fmt, val...) \
do { \
int err = add_hotplug_env_var(envp, num_envp, &i, \
buffer, buffer_size, &len, \
fmt, val); \
if (err) \
return err; \
} while (0)
static int serio_hotplug(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
{
struct serio *serio;
int i = 0;
int length = 0;
int len = 0;
if (!dev)
return -ENODEV;
serio = to_serio_port(dev);
PUT_ENVP("SERIO_TYPE=%02x", serio->id.type);
PUT_ENVP("SERIO_PROTO=%02x", serio->id.proto);
PUT_ENVP("SERIO_ID=%02x", serio->id.id);
PUT_ENVP("SERIO_EXTRA=%02x", serio->id.extra);
SERIO_ADD_HOTPLUG_VAR("SERIO_TYPE=%02x", serio->id.type);
SERIO_ADD_HOTPLUG_VAR("SERIO_PROTO=%02x", serio->id.proto);
SERIO_ADD_HOTPLUG_VAR("SERIO_ID=%02x", serio->id.id);
SERIO_ADD_HOTPLUG_VAR("SERIO_EXTRA=%02x", serio->id.extra);
SERIO_ADD_HOTPLUG_VAR("MODALIAS=serio:ty%02Xpr%02Xid%02Xex%02X",
serio->id.type, serio->id.proto, serio->id.id, serio->id.extra);
envp[i] = NULL;
return 0;
}
#undef PUT_ENVP
#undef SERIO_ADD_HOTPLUG_VAR
#else