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,
"Marek Behún" <kabel@kernel.org>, "Pavel Machek" <pavel@ucw.cz>
Subject: [PATCH resend 1/3] HID: elan: Silence mute LED errors being logged when the device is unplugged
Date: Sun, 4 Apr 2021 09:52:50 +0200 [thread overview]
Message-ID: <20210404075252.4032-2-hdegoede@redhat.com> (raw)
In-Reply-To: <20210404075252.4032-1-hdegoede@redhat.com>
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
While at it also make sure that elan_mute_led_set_brigtness() returns
an error (-EIO) when ret != 3 but it is not an error (>= 0).
Reviewed-by: Marek Behún <kabel@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
- Return -EIO when ret != 3 and >= 0
---
drivers/hid/hid-elan.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/hid/hid-elan.c b/drivers/hid/hid-elan.c
index dae193749d44..473d8528319d 100644
--- a/drivers/hid/hid-elan.c
+++ b/drivers/hid/hid-elan.c
@@ -445,8 +445,9 @@ 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);
- return ret;
+ if (ret != -ENODEV)
+ hid_err(hdev, "Failed to set mute led brightness: %d\n", ret);
+ return ret < 0 ? ret : -EIO;
}
drvdata->mute_led_state = led_state;
@@ -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);
--
2.30.2
next prev parent reply other threads:[~2021-04-04 7:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-04 7:52 [PATCH resend 0/3] HID: elan: Mute LED support fixes Hans de Goede
2021-04-04 7:52 ` Hans de Goede [this message]
2021-04-04 7:52 ` [PATCH resend 2/3] HID: elan: Set default_trigger for the mute LED Hans de Goede
2021-04-04 7:52 ` [PATCH resend 3/3] HID: elan: Remove elan_mute_led_get_brigtness() Hans de Goede
2021-04-07 10:47 ` [PATCH resend 0/3] HID: elan: Mute LED support fixes Jiri Kosina
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