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Message-Id: <20230510162234.291439-2-hdegoede@redhat.com>
Date: Wed, 10 May 2023 18:22:31 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Pavel Machek <pavel@....cz>,
Jacek Anaszewski <jacek.anaszewski@...il.com>,
Lee Jones <lee@...nel.org>,
Sebastian Reichel <sre@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Michael Grzeschik <m.grzeschik@...gutronix.de>,
Johannes Berg <johannes@...solutions.net>,
Pablo Neira Ayuso <pablo@...filter.org>,
Jozsef Kadlecsik <kadlec@...filter.org>
Cc: Hans de Goede <hdegoede@...hat.com>,
linux-leds@...r.kernel.org,
linux-pm@...r.kernel.org,
linux-usb@...r.kernel.org,
netdev@...r.kernel.org,
netfilter-devel@...r.kernel.org,
coreteam@...filter.org,
Yauhen Kharuzhy <jekhor@...il.com>
Subject: [PATCH RESEND 1/4] leds: Change led_trigger_blink[_oneshot]() delay parameters to pass-by-value
led_blink_set[_oneshot]()'s delay_on and delay_off function parameters
are pass by reference, so that hw-blink implementations can report
back the actual achieved delays when the values have been rounded
to something the hw supports.
This is really only interesting for the sysfs API / the timer trigger.
Other triggers don't really care about this and none of the callers of
led_trigger_blink[_oneshot]() do anything with the returned delay values.
Change the led_trigger_blink[_oneshot]() delay parameters to pass-by-value,
there are 2 reasons for this:
1. led_cdev->blink_set() may sleep, while led_trigger_blink() may not.
So on hw where led_cdev->blink_set() sleeps the call needs to be deferred
to a workqueue, in which case the actual achieved delays are unknown
(this is a preparation patch for the deferring).
2. Since the callers don't care about the actual achieved delays, allowing
callers to directly pass a value leads to simpler code for most callers.
Reviewed-by: Jacek Anaszewski <jacek.anaszewski@...il.com>
Tested-by: Yauhen Kharuzhy <jekhor@...il.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
drivers/leds/led-triggers.c | 16 ++++++++--------
drivers/leds/trigger/ledtrig-disk.c | 9 +++------
drivers/leds/trigger/ledtrig-mtd.c | 8 ++------
drivers/net/arcnet/arcnet.c | 8 ++------
drivers/power/supply/power_supply_leds.c | 5 +----
drivers/usb/common/led.c | 4 +---
include/linux/leds.h | 16 ++++++++--------
net/mac80211/led.c | 2 +-
net/mac80211/led.h | 8 ++------
net/netfilter/xt_LED.c | 3 +--
10 files changed, 29 insertions(+), 50 deletions(-)
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 072491d3e17b..e06361165e9b 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -393,8 +393,8 @@ void led_trigger_event(struct led_trigger *trig,
EXPORT_SYMBOL_GPL(led_trigger_event);
static void led_trigger_blink_setup(struct led_trigger *trig,
- unsigned long *delay_on,
- unsigned long *delay_off,
+ unsigned long delay_on,
+ unsigned long delay_off,
int oneshot,
int invert)
{
@@ -406,25 +406,25 @@ static void led_trigger_blink_setup(struct led_trigger *trig,
rcu_read_lock();
list_for_each_entry_rcu(led_cdev, &trig->led_cdevs, trig_list) {
if (oneshot)
- led_blink_set_oneshot(led_cdev, delay_on, delay_off,
+ led_blink_set_oneshot(led_cdev, &delay_on, &delay_off,
invert);
else
- led_blink_set(led_cdev, delay_on, delay_off);
+ led_blink_set(led_cdev, &delay_on, &delay_off);
}
rcu_read_unlock();
}
void led_trigger_blink(struct led_trigger *trig,
- unsigned long *delay_on,
- unsigned long *delay_off)
+ unsigned long delay_on,
+ unsigned long delay_off)
{
led_trigger_blink_setup(trig, delay_on, delay_off, 0, 0);
}
EXPORT_SYMBOL_GPL(led_trigger_blink);
void led_trigger_blink_oneshot(struct led_trigger *trig,
- unsigned long *delay_on,
- unsigned long *delay_off,
+ unsigned long delay_on,
+ unsigned long delay_off,
int invert)
{
led_trigger_blink_setup(trig, delay_on, delay_off, 1, invert);
diff --git a/drivers/leds/trigger/ledtrig-disk.c b/drivers/leds/trigger/ledtrig-disk.c
index 0b7dfbd04273..e9b87ee944f2 100644
--- a/drivers/leds/trigger/ledtrig-disk.c
+++ b/drivers/leds/trigger/ledtrig-disk.c
@@ -19,16 +19,13 @@ DEFINE_LED_TRIGGER(ledtrig_disk_write);
void ledtrig_disk_activity(bool write)
{
- unsigned long blink_delay = BLINK_DELAY;
-
- led_trigger_blink_oneshot(ledtrig_disk,
- &blink_delay, &blink_delay, 0);
+ led_trigger_blink_oneshot(ledtrig_disk, BLINK_DELAY, BLINK_DELAY, 0);
if (write)
led_trigger_blink_oneshot(ledtrig_disk_write,
- &blink_delay, &blink_delay, 0);
+ BLINK_DELAY, BLINK_DELAY, 0);
else
led_trigger_blink_oneshot(ledtrig_disk_read,
- &blink_delay, &blink_delay, 0);
+ BLINK_DELAY, BLINK_DELAY, 0);
}
EXPORT_SYMBOL(ledtrig_disk_activity);
diff --git a/drivers/leds/trigger/ledtrig-mtd.c b/drivers/leds/trigger/ledtrig-mtd.c
index 8fa763c2269b..bbe6876a249d 100644
--- a/drivers/leds/trigger/ledtrig-mtd.c
+++ b/drivers/leds/trigger/ledtrig-mtd.c
@@ -22,12 +22,8 @@ DEFINE_LED_TRIGGER(ledtrig_nand);
void ledtrig_mtd_activity(void)
{
- unsigned long blink_delay = BLINK_DELAY;
-
- led_trigger_blink_oneshot(ledtrig_mtd,
- &blink_delay, &blink_delay, 0);
- led_trigger_blink_oneshot(ledtrig_nand,
- &blink_delay, &blink_delay, 0);
+ led_trigger_blink_oneshot(ledtrig_mtd, BLINK_DELAY, BLINK_DELAY, 0);
+ led_trigger_blink_oneshot(ledtrig_nand, BLINK_DELAY, BLINK_DELAY, 0);
}
EXPORT_SYMBOL(ledtrig_mtd_activity);
diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index 1bad1866ae46..99265667538c 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -196,13 +196,10 @@ static void arcnet_dump_packet(struct net_device *dev, int bufnum,
void arcnet_led_event(struct net_device *dev, enum arcnet_led_event event)
{
struct arcnet_local *lp = netdev_priv(dev);
- unsigned long led_delay = 350;
- unsigned long tx_delay = 50;
switch (event) {
case ARCNET_LED_EVENT_RECON:
- led_trigger_blink_oneshot(lp->recon_led_trig,
- &led_delay, &led_delay, 0);
+ led_trigger_blink_oneshot(lp->recon_led_trig, 350, 350, 0);
break;
case ARCNET_LED_EVENT_OPEN:
led_trigger_event(lp->tx_led_trig, LED_OFF);
@@ -213,8 +210,7 @@ void arcnet_led_event(struct net_device *dev, enum arcnet_led_event event)
led_trigger_event(lp->recon_led_trig, LED_OFF);
break;
case ARCNET_LED_EVENT_TX:
- led_trigger_blink_oneshot(lp->tx_led_trig,
- &tx_delay, &tx_delay, 0);
+ led_trigger_blink_oneshot(lp->tx_led_trig, 50, 50, 0);
break;
}
}
diff --git a/drivers/power/supply/power_supply_leds.c b/drivers/power/supply/power_supply_leds.c
index 702bf83f6e6d..e2f554e4e4e6 100644
--- a/drivers/power/supply/power_supply_leds.c
+++ b/drivers/power/supply/power_supply_leds.c
@@ -22,8 +22,6 @@
static void power_supply_update_bat_leds(struct power_supply *psy)
{
union power_supply_propval status;
- unsigned long delay_on = 0;
- unsigned long delay_off = 0;
if (power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
return;
@@ -42,8 +40,7 @@ static void power_supply_update_bat_leds(struct power_supply *psy)
led_trigger_event(psy->charging_full_trig, LED_FULL);
led_trigger_event(psy->charging_trig, LED_FULL);
led_trigger_event(psy->full_trig, LED_OFF);
- led_trigger_blink(psy->charging_blink_full_solid_trig,
- &delay_on, &delay_off);
+ led_trigger_blink(psy->charging_blink_full_solid_trig, 0, 0);
break;
default:
led_trigger_event(psy->charging_full_trig, LED_OFF);
diff --git a/drivers/usb/common/led.c b/drivers/usb/common/led.c
index 0865dd44a80a..1de18d90b134 100644
--- a/drivers/usb/common/led.c
+++ b/drivers/usb/common/led.c
@@ -14,8 +14,6 @@
#define BLINK_DELAY 30
-static unsigned long usb_blink_delay = BLINK_DELAY;
-
DEFINE_LED_TRIGGER(ledtrig_usb_gadget);
DEFINE_LED_TRIGGER(ledtrig_usb_host);
@@ -32,7 +30,7 @@ void usb_led_activity(enum usb_led_event ev)
break;
}
/* led_trigger_blink_oneshot() handles trig == NULL gracefully */
- led_trigger_blink_oneshot(trig, &usb_blink_delay, &usb_blink_delay, 0);
+ led_trigger_blink_oneshot(trig, BLINK_DELAY, BLINK_DELAY, 0);
}
EXPORT_SYMBOL_GPL(usb_led_activity);
diff --git a/include/linux/leds.h b/include/linux/leds.h
index c39bbf17a25b..c3dc22d184e2 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -433,11 +433,11 @@ void led_trigger_register_simple(const char *name,
struct led_trigger **trigger);
void led_trigger_unregister_simple(struct led_trigger *trigger);
void led_trigger_event(struct led_trigger *trigger, enum led_brightness event);
-void led_trigger_blink(struct led_trigger *trigger, unsigned long *delay_on,
- unsigned long *delay_off);
+void led_trigger_blink(struct led_trigger *trigger, unsigned long delay_on,
+ unsigned long delay_off);
void led_trigger_blink_oneshot(struct led_trigger *trigger,
- unsigned long *delay_on,
- unsigned long *delay_off,
+ unsigned long delay_on,
+ unsigned long delay_off,
int invert);
void led_trigger_set_default(struct led_classdev *led_cdev);
int led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger);
@@ -487,11 +487,11 @@ static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {}
static inline void led_trigger_event(struct led_trigger *trigger,
enum led_brightness event) {}
static inline void led_trigger_blink(struct led_trigger *trigger,
- unsigned long *delay_on,
- unsigned long *delay_off) {}
+ unsigned long delay_on,
+ unsigned long delay_off) {}
static inline void led_trigger_blink_oneshot(struct led_trigger *trigger,
- unsigned long *delay_on,
- unsigned long *delay_off,
+ unsigned long delay_on,
+ unsigned long delay_off,
int invert) {}
static inline void led_trigger_set_default(struct led_classdev *led_cdev) {}
static inline int led_trigger_set(struct led_classdev *led_cdev,
diff --git a/net/mac80211/led.c b/net/mac80211/led.c
index 6de8d0ad5497..2dc732147e85 100644
--- a/net/mac80211/led.c
+++ b/net/mac80211/led.c
@@ -282,7 +282,7 @@ static void tpt_trig_timer(struct timer_list *t)
}
}
- led_trigger_blink(&local->tpt_led, &on, &off);
+ led_trigger_blink(&local->tpt_led, on, off);
}
const char *
diff --git a/net/mac80211/led.h b/net/mac80211/led.h
index b71a1428d883..d25f13346b82 100644
--- a/net/mac80211/led.h
+++ b/net/mac80211/led.h
@@ -13,22 +13,18 @@
static inline void ieee80211_led_rx(struct ieee80211_local *local)
{
#ifdef CONFIG_MAC80211_LEDS
- unsigned long led_delay = MAC80211_BLINK_DELAY;
-
if (!atomic_read(&local->rx_led_active))
return;
- led_trigger_blink_oneshot(&local->rx_led, &led_delay, &led_delay, 0);
+ led_trigger_blink_oneshot(&local->rx_led, MAC80211_BLINK_DELAY, MAC80211_BLINK_DELAY, 0);
#endif
}
static inline void ieee80211_led_tx(struct ieee80211_local *local)
{
#ifdef CONFIG_MAC80211_LEDS
- unsigned long led_delay = MAC80211_BLINK_DELAY;
-
if (!atomic_read(&local->tx_led_active))
return;
- led_trigger_blink_oneshot(&local->tx_led, &led_delay, &led_delay, 0);
+ led_trigger_blink_oneshot(&local->tx_led, MAC80211_BLINK_DELAY, MAC80211_BLINK_DELAY, 0);
#endif
}
diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c
index 66b0f941d8fb..36c9720ad8d6 100644
--- a/net/netfilter/xt_LED.c
+++ b/net/netfilter/xt_LED.c
@@ -43,7 +43,6 @@ led_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct xt_led_info *ledinfo = par->targinfo;
struct xt_led_info_internal *ledinternal = ledinfo->internal_data;
- unsigned long led_delay = XT_LED_BLINK_DELAY;
/*
* If "always blink" is enabled, and there's still some time until the
@@ -52,7 +51,7 @@ led_tg(struct sk_buff *skb, const struct xt_action_param *par)
if ((ledinfo->delay > 0) && ledinfo->always_blink &&
timer_pending(&ledinternal->timer))
led_trigger_blink_oneshot(&ledinternal->netfilter_led_trigger,
- &led_delay, &led_delay, 1);
+ XT_LED_BLINK_DELAY, XT_LED_BLINK_DELAY, 1);
else
led_trigger_event(&ledinternal->netfilter_led_trigger, LED_FULL);
--
2.40.1
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