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Input: atkbd - supress "too many keys" error message 

Many users seems to be annoyed by this warning so kill the message
and implement a counter exported as a sysfs attribute so we still
know what is going on. Make atkbd use attribute groups while we are
at it.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2006-10-11 01:44:46 -04:00
parent 817e6ba362
commit 86255d9d0b
1 changed files with 41 additions and 13 deletions
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54
drivers/input/keyboard/atkbd.c
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@ -221,6 +221,7 @@ struct atkbd {
unsigned long xl_bit;
unsigned int last;
unsigned long time;
unsigned long err_count;
struct work_struct event_work;
struct mutex event_mutex;
@ -234,11 +235,13 @@ static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t
#define ATKBD_DEFINE_ATTR(_name) \
static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
static ssize_t atkbd_do_show_##_name(struct device *d, struct device_attribute *attr, char *b) \
static ssize_t atkbd_do_show_##_name(struct device *d, \
struct device_attribute *attr, char *b) \
{ \
return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
} \
static ssize_t atkbd_do_set_##_name(struct device *d, struct device_attribute *attr, const char *b, size_t s) \
static ssize_t atkbd_do_set_##_name(struct device *d, \
struct device_attribute *attr, const char *b, size_t s) \
{ \
return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
} \
@ -251,6 +254,32 @@ ATKBD_DEFINE_ATTR(set);
ATKBD_DEFINE_ATTR(softrepeat);
ATKBD_DEFINE_ATTR(softraw);
#define ATKBD_DEFINE_RO_ATTR(_name) \
static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
static ssize_t atkbd_do_show_##_name(struct device *d, \
struct device_attribute *attr, char *b) \
{ \
return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
} \
static struct device_attribute atkbd_attr_##_name = \
__ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
ATKBD_DEFINE_RO_ATTR(err_count);
static struct attribute *atkbd_attributes[] = {
&atkbd_attr_extra.attr,
&atkbd_attr_scroll.attr,
&atkbd_attr_set.attr,
&atkbd_attr_softrepeat.attr,
&atkbd_attr_softraw.attr,
&atkbd_attr_err_count.attr,
NULL
};
static struct attribute_group atkbd_attribute_group = {
.attrs = atkbd_attributes,
};
static const unsigned int xl_table[] = {
ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
@ -396,7 +425,10 @@ static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
add_release_event = 1;
break;
case ATKBD_RET_ERR:
atkbd->err_count++;
#ifdef ATKBD_DEBUG
printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
#endif
goto out;
}
@ -786,12 +818,7 @@ static void atkbd_disconnect(struct serio *serio)
synchronize_sched(); /* Allow atkbd_interrupt()s to complete. */
flush_scheduled_work();
device_remove_file(&serio->dev, &atkbd_attr_extra);
device_remove_file(&serio->dev, &atkbd_attr_scroll);
device_remove_file(&serio->dev, &atkbd_attr_set);
device_remove_file(&serio->dev, &atkbd_attr_softrepeat);
device_remove_file(&serio->dev, &atkbd_attr_softraw);
sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
input_unregister_device(atkbd->dev);
serio_close(serio);
serio_set_drvdata(serio, NULL);
@ -961,11 +988,7 @@ static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
atkbd_set_keycode_table(atkbd);
atkbd_set_device_attrs(atkbd);
device_create_file(&serio->dev, &atkbd_attr_extra);
device_create_file(&serio->dev, &atkbd_attr_scroll);
device_create_file(&serio->dev, &atkbd_attr_set);
device_create_file(&serio->dev, &atkbd_attr_softrepeat);
device_create_file(&serio->dev, &atkbd_attr_softraw);
sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
atkbd_enable(atkbd);
@ -1259,6 +1282,11 @@ static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t co
return count;
}
static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
{
return sprintf(buf, "%lu\n", atkbd->err_count);
}
static int __init atkbd_init(void)
{