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From: Hans de Goede <hdegoede@redhat.com>
To: Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Hans de Goede <hdegoede@redhat.com>,
	linux-input@vger.kernel.org, linux-leds@vger.kernel.org,
	alsa-devel@alsa-project.org
Subject: [PATCH 1/3] HID: elan: Silence mute LED errors being logged when the device is unplugged
Date: Sat, 20 Feb 2021 17:32:09 +0100	[thread overview]
Message-ID: <20210220163211.323178-1-hdegoede@redhat.com> (raw)

Being integrated into an USB keyboard-dock the mute LED can go away
at any time, leading to the following errors:

[  918.667671] elan 0003:04F3:0755.0002: Failed to set mute led brightness: -19
[  918.667737] leds elan:red:mute: Setting an LED's brightness failed (-19)

Fix this by making the following changes:

1. Don't log an error from elan_mute_led_set_brigtness() when ret == ENODEV
2. Set the LED_HW_PLUGGABLE flag on the mute LED led_classdev

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/hid/hid-elan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-elan.c b/drivers/hid/hid-elan.c
index dae193749d44..71740988a3f6 100644
--- a/drivers/hid/hid-elan.c
+++ b/drivers/hid/hid-elan.c
@@ -445,7 +445,8 @@ static int elan_mute_led_set_brigtness(struct led_classdev *led_cdev,
 	kfree(dmabuf);
 
 	if (ret != ELAN_LED_REPORT_SIZE) {
-		hid_err(hdev, "Failed to set mute led brightness: %d\n", ret);
+		if (ret != -ENODEV)
+			hid_err(hdev, "Failed to set mute led brightness: %d\n", ret);
 		return ret;
 	}
 
@@ -462,6 +463,7 @@ static int elan_init_mute_led(struct hid_device *hdev)
 	mute_led->brightness_get = elan_mute_led_get_brigtness;
 	mute_led->brightness_set_blocking = elan_mute_led_set_brigtness;
 	mute_led->max_brightness = LED_ON;
+	mute_led->flags = LED_HW_PLUGGABLE;
 	mute_led->dev = &hdev->dev;
 
 	return devm_led_classdev_register(&hdev->dev, mute_led);
-- 
2.30.1


WARNING: multiple messages have this Message-ID (diff)
From: Hans de Goede <hdegoede@redhat.com>
To: Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: Hans de Goede <hdegoede@redhat.com>,
	alsa-devel@alsa-project.org, linux-leds@vger.kernel.org,
	linux-input@vger.kernel.org
Subject: [PATCH 1/3] HID: elan: Silence mute LED errors being logged when the device is unplugged
Date: Sat, 20 Feb 2021 17:32:09 +0100	[thread overview]
Message-ID: <20210220163211.323178-1-hdegoede@redhat.com> (raw)

Being integrated into an USB keyboard-dock the mute LED can go away
at any time, leading to the following errors:

[  918.667671] elan 0003:04F3:0755.0002: Failed to set mute led brightness: -19
[  918.667737] leds elan:red:mute: Setting an LED's brightness failed (-19)

Fix this by making the following changes:

1. Don't log an error from elan_mute_led_set_brigtness() when ret == ENODEV
2. Set the LED_HW_PLUGGABLE flag on the mute LED led_classdev

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/hid/hid-elan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-elan.c b/drivers/hid/hid-elan.c
index dae193749d44..71740988a3f6 100644
--- a/drivers/hid/hid-elan.c
+++ b/drivers/hid/hid-elan.c
@@ -445,7 +445,8 @@ static int elan_mute_led_set_brigtness(struct led_classdev *led_cdev,
 	kfree(dmabuf);
 
 	if (ret != ELAN_LED_REPORT_SIZE) {
-		hid_err(hdev, "Failed to set mute led brightness: %d\n", ret);
+		if (ret != -ENODEV)
+			hid_err(hdev, "Failed to set mute led brightness: %d\n", ret);
 		return ret;
 	}
 
@@ -462,6 +463,7 @@ static int elan_init_mute_led(struct hid_device *hdev)
 	mute_led->brightness_get = elan_mute_led_get_brigtness;
 	mute_led->brightness_set_blocking = elan_mute_led_set_brigtness;
 	mute_led->max_brightness = LED_ON;
+	mute_led->flags = LED_HW_PLUGGABLE;
 	mute_led->dev = &hdev->dev;
 
 	return devm_led_classdev_register(&hdev->dev, mute_led);
-- 
2.30.1


             reply	other threads:[~2021-02-20 16:33 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-20 16:32 Hans de Goede [this message]
2021-02-20 16:32 ` [PATCH 1/3] HID: elan: Silence mute LED errors being logged when the device is unplugged Hans de Goede
2021-02-20 16:32 ` [PATCH 2/3] HID: elan: Set default_trigger-s for the mute LED Hans de Goede
2021-02-20 16:32   ` Hans de Goede
2021-02-21  1:45   ` Marek Behún
2021-02-20 16:32 ` [PATCH 3/3] HID: elan: Remove elan_mute_led_get_brigtness() Hans de Goede
2021-02-20 16:32   ` Hans de Goede
2021-02-21  1:47   ` Marek Behún
2021-02-21  1:46 ` [PATCH 1/3] HID: elan: Silence mute LED errors being logged when the device is unplugged Marek Behún

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