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auxdisplay for v7.3-1

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* Cancel backlight work on panel registration failure
 * Miscellaneous cleanups
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Merge tag 'auxdisplay-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay

Pull auxdisplay updates from Andy Shevchenko:

 - Cancel backlight work on panel registration failure

 - Miscellaneous cleanups

* tag 'auxdisplay-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
  auxdisplay: charlcd: cancel backlight work on registration failure
  auxdisplay: panel: Remove unused callback binding code
  auxdisplay: Remove redundant dev_err()
This commit is contained in:
Linus Torvalds 2026-08-24 08:15:59 -07:00
commit 0b0e645ed2
3 changed files with 15 additions and 48 deletions
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21
drivers/auxdisplay/charlcd.c
View File

@ -595,6 +595,16 @@ static int charlcd_init(struct charlcd *lcd)
return 0;
}
static void charlcd_deinit(struct charlcd *lcd)
{
struct charlcd_priv *priv = charlcd_to_priv(lcd);
if (lcd->ops->backlight) {
cancel_delayed_work_sync(&priv->bl_work);
lcd->ops->backlight(lcd, CHARLCD_OFF);
}
}
struct charlcd *charlcd_alloc(unsigned int drvdata_size)
{
struct charlcd_priv *priv;
@ -654,8 +664,10 @@ int charlcd_register(struct charlcd *lcd)
return ret;
ret = misc_register(&charlcd_dev);
if (ret)
if (ret) {
charlcd_deinit(lcd);
return ret;
}
the_charlcd = lcd;
register_reboot_notifier(&panel_notifier);
@ -665,16 +677,11 @@ EXPORT_SYMBOL_GPL(charlcd_register);
int charlcd_unregister(struct charlcd *lcd)
{
struct charlcd_priv *priv = charlcd_to_priv(lcd);
unregister_reboot_notifier(&panel_notifier);
charlcd_puts(lcd, "\x0cLCD driver unloaded.\x1b[Lc\x1b[Lb\x1b[L-");
misc_deregister(&charlcd_dev);
the_charlcd = NULL;
if (lcd->ops->backlight) {
cancel_delayed_work_sync(&priv->bl_work);
priv->lcd.ops->backlight(&priv->lcd, CHARLCD_OFF);
}
charlcd_deinit(lcd);
return 0;
}

5
drivers/auxdisplay/ht16k33.c
View File

@ -547,11 +547,8 @@ static int ht16k33_keypad_probe(struct i2c_client *client,
ht16k33_keypad_irq_thread,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
DRIVER_NAME, keypad);
if (err) {
dev_err(dev, "irq request failed %d, error %d\n", client->irq,
err);
if (err)
return err;
}
ht16k33_keypad_stop(keypad->dev);

37
drivers/auxdisplay/panel.c
View File

@ -1450,43 +1450,6 @@ static struct logical_input *panel_bind_key(const char *name, const char *press,
return key;
}
#if 0
/* tries to bind a callback function to the signal name <name>. The function
* <press_fct> will be called with the <press_data> arg when the signal is
* activated, and so on for <release_fct>/<release_data>
* Returns the pointer to the new signal if ok, NULL if the signal could not
* be bound.
*/
static struct logical_input *panel_bind_callback(char *name,
void (*press_fct)(int),
int press_data,
void (*release_fct)(int),
int release_data)
{
struct logical_input *callback;
callback = kmalloc(sizeof(*callback), GFP_KERNEL);
if (!callback)
return NULL;
memset(callback, 0, sizeof(struct logical_input));
if (!input_name2mask(name, &callback->mask, &callback->value,
&scan_mask_i, &scan_mask_o))
return NULL;
callback->type = INPUT_TYPE_STD;
callback->state = INPUT_ST_LOW;
callback->rise_time = 1;
callback->fall_time = 1;
callback->u.std.press_fct = press_fct;
callback->u.std.press_data = press_data;
callback->u.std.release_fct = release_fct;
callback->u.std.release_data = release_data;
list_add(&callback->list, &logical_inputs);
return callback;
}
#endif
static void keypad_init(void)
{
int keynum;