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ALSA: control_led - use DEVICE_ATTR_*() macro 

Use DEVICE_ATTR_*() helper instead of plain DEVICE_ATTR,
which makes the code a bit shorter and easier to read.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210523071109.28940-1-yuehaibing@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
YueHaibing 2021-05-23 15:11:09 +08:00 committed by Takashi Iwai
parent e1dc219af7
commit 08e767cd9e
1 changed files with 19 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
sound/core/control_led.c
View File

@ -375,7 +375,7 @@ static void snd_ctl_led_disconnect(struct snd_card *card)
* sysfs
*/
static ssize_t show_mode(struct device *dev,
static ssize_t mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_ctl_led *led = container_of(dev, struct snd_ctl_led, dev);
@ -390,7 +390,8 @@ static ssize_t show_mode(struct device *dev,
return sprintf(buf, "%s\n", str);
}
static ssize_t store_mode(struct device *dev, struct device_attribute *attr,
static ssize_t mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct snd_ctl_led *led = container_of(dev, struct snd_ctl_led, dev);
@ -419,7 +420,7 @@ static ssize_t store_mode(struct device *dev, struct device_attribute *attr,
return count;
}
static ssize_t show_brightness(struct device *dev,
static ssize_t brightness_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_ctl_led *led = container_of(dev, struct snd_ctl_led, dev);
@ -427,8 +428,8 @@ static ssize_t show_brightness(struct device *dev,
return sprintf(buf, "%u\n", ledtrig_audio_get(led->trigger_type));
}
static DEVICE_ATTR(mode, 0644, show_mode, store_mode);
static DEVICE_ATTR(brightness, 0444, show_brightness, NULL);
static DEVICE_ATTR_RW(mode);
static DEVICE_ATTR_RO(brightness);
static struct attribute *snd_ctl_led_dev_attrs[] = {
&dev_attr_mode.attr,
@ -562,22 +563,25 @@ static ssize_t set_led_id(struct snd_ctl_led_card *led_card, const char *buf, si
return count;
}
static ssize_t parse_attach(struct device *dev, struct device_attribute *attr,
static ssize_t attach_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct snd_ctl_led_card *led_card = container_of(dev, struct snd_ctl_led_card, dev);
return set_led_id(led_card, buf, count, true);
}
static ssize_t parse_detach(struct device *dev, struct device_attribute *attr,
static ssize_t detach_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct snd_ctl_led_card *led_card = container_of(dev, struct snd_ctl_led_card, dev);
return set_led_id(led_card, buf, count, false);
}
static ssize_t ctl_reset(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t reset_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct snd_ctl_led_card *led_card = container_of(dev, struct snd_ctl_led_card, dev);
int err;
@ -590,8 +594,8 @@ static ssize_t ctl_reset(struct device *dev, struct device_attribute *attr,
return count;
}
static ssize_t ctl_list(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t list_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_ctl_led_card *led_card = container_of(dev, struct snd_ctl_led_card, dev);
struct snd_card *card;
@ -624,10 +628,10 @@ static ssize_t ctl_list(struct device *dev,
return buf2 - buf;
}
static DEVICE_ATTR(attach, 0200, NULL, parse_attach);
static DEVICE_ATTR(detach, 0200, NULL, parse_detach);
static DEVICE_ATTR(reset, 0200, NULL, ctl_reset);
static DEVICE_ATTR(list, 0444, ctl_list, NULL);
static DEVICE_ATTR_WO(attach);
static DEVICE_ATTR_WO(detach);
static DEVICE_ATTR_WO(reset);
static DEVICE_ATTR_RO(list);
static struct attribute *snd_ctl_led_card_attrs[] = {
&dev_attr_attach.attr,