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Input: psmouse - tweak PSMOUSE_DEFINE_ATTR to support raw set callbacks 

We want to support attr->set callbacks that may need psmouse->state to
not be updated, or may want to manually deal w/ enabling and disabling
the device.  To do that, we create __PSMOUSE_DEFINE_ATTR which enables
us to set a 'protect' argument specifying whether or not the set
callback should be protected with psmouse_disable and state setting.

Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Andres Salomon 2008-09-16 12:30:34 -04:00 committed by Dmitry Torokhov
parent 8bf020ee96
commit 68d482214b
2 changed files with 23 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/input/mouse/psmouse-base.c
View File

@ -1401,25 +1401,29 @@ ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *dev
psmouse = serio_get_drvdata(serio);
if (psmouse->state == PSMOUSE_IGNORE) {
retval = -ENODEV;
goto out_unlock;
}
if (attr->protect) {
if (psmouse->state == PSMOUSE_IGNORE) {
retval = -ENODEV;
goto out_unlock;
}
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
parent = serio_get_drvdata(serio->parent);
psmouse_deactivate(parent);
}
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
parent = serio_get_drvdata(serio->parent);
psmouse_deactivate(parent);
}
psmouse_deactivate(psmouse);
psmouse_deactivate(psmouse);
}
retval = attr->set(psmouse, attr->data, buf, count);
if (retval != -ENODEV)
psmouse_activate(psmouse);
if (attr->protect) {
if (retval != -ENODEV)
psmouse_activate(psmouse);
if (parent)
psmouse_activate(parent);
if (parent)
psmouse_activate(parent);
}
out_unlock:
mutex_unlock(&psmouse_mutex);

7
drivers/input/mouse/psmouse.h
View File

@ -106,6 +106,7 @@ struct psmouse_attribute {
ssize_t (*show)(struct psmouse *psmouse, void *data, char *buf);
ssize_t (*set)(struct psmouse *psmouse, void *data,
const char *buf, size_t count);
int protect;
};
#define to_psmouse_attr(a) container_of((a), struct psmouse_attribute, dattr)
@ -114,7 +115,7 @@ ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *at
ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
#define PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set) \
#define __PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set, _protect) \
static ssize_t _show(struct psmouse *, void *data, char *); \
static ssize_t _set(struct psmouse *, void *data, const char *, size_t); \
static struct psmouse_attribute psmouse_attr_##_name = { \
@ -129,6 +130,10 @@ static struct psmouse_attribute psmouse_attr_##_name = { \
.data = _data, \
.show = _show, \
.set = _set, \
.protect = _protect, \
}
#define PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set) \
__PSMOUSE_DEFINE_ATTR(_name, _mode, _data, _show, _set, 1)
#endif /* _PSMOUSE_H */