From: George Stark <gnstark@salutedevices.com>
To: <andy.shevchenko@gmail.com>, <pavel@ucw.cz>, <lee@kernel.org>,
<vadimp@nvidia.com>, <mpe@ellerman.id.au>, <npiggin@gmail.com>,
<christophe.leroy@csgroup.eu>, <hdegoede@redhat.com>,
<mazziesaccount@gmail.com>, <peterz@infradead.org>,
<mingo@redhat.com>, <will@kernel.org>, <longman@redhat.com>,
<boqun.feng@gmail.com>, <nikitos.tr@gmail.com>
Cc: <linux-leds@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linuxppc-dev@lists.ozlabs.org>, <kernel@salutedevices.com>,
George Stark <gnstark@salutedevices.com>
Subject: [PATCH v4 07/10] leds: nic78bx: use devm API to cleanup module's resources
Date: Thu, 14 Dec 2023 20:36:11 +0300 [thread overview]
Message-ID: <20231214173614.2820929-8-gnstark@salutedevices.com> (raw)
In-Reply-To: <20231214173614.2820929-1-gnstark@salutedevices.com>
In this driver LEDs are registered using devm_led_classdev_register()
so they are automatically unregistered after module's remove() is done.
led_classdev_unregister() calls module's led_set_brightness() to turn off
the LEDs and that callback uses resources which were destroyed already
in module's remove() so use devm API instead of remove().
Signed-off-by: George Stark <gnstark@salutedevices.com>
---
drivers/leds/leds-nic78bx.c | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/drivers/leds/leds-nic78bx.c b/drivers/leds/leds-nic78bx.c
index f196f52eec1e..f3049fa14f04 100644
--- a/drivers/leds/leds-nic78bx.c
+++ b/drivers/leds/leds-nic78bx.c
@@ -118,6 +118,15 @@ static struct nic78bx_led nic78bx_leds[] = {
}
};
+static void lock_led_reg_action(void *data)
+{
+ struct nic78bx_led_data *led_data = (struct nic78bx_led_data *)data;
+
+ /* Lock LED register */
+ outb(NIC78BX_LOCK_VALUE,
+ led_data->io_base + NIC78BX_LOCK_REG_OFFSET);
+}
+
static int nic78bx_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -152,6 +161,10 @@ static int nic78bx_probe(struct platform_device *pdev)
led_data->io_base = io_rc->start;
spin_lock_init(&led_data->lock);
+ ret = devm_add_action(dev, lock_led_reg_action, led_data);
+ if (ret)
+ return ret;
+
for (i = 0; i < ARRAY_SIZE(nic78bx_leds); i++) {
nic78bx_leds[i].data = led_data;
@@ -167,17 +180,6 @@ static int nic78bx_probe(struct platform_device *pdev)
return ret;
}
-static int nic78bx_remove(struct platform_device *pdev)
-{
- struct nic78bx_led_data *led_data = platform_get_drvdata(pdev);
-
- /* Lock LED register */
- outb(NIC78BX_LOCK_VALUE,
- led_data->io_base + NIC78BX_LOCK_REG_OFFSET);
-
- return 0;
-}
-
static const struct acpi_device_id led_device_ids[] = {
{"NIC78B3", 0},
{"", 0},
@@ -186,7 +188,6 @@ MODULE_DEVICE_TABLE(acpi, led_device_ids);
static struct platform_driver led_driver = {
.probe = nic78bx_probe,
- .remove = nic78bx_remove,
.driver = {
.name = KBUILD_MODNAME,
.acpi_match_table = ACPI_PTR(led_device_ids),
--
2.25.1
next prev parent reply other threads:[~2023-12-14 17:36 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 17:36 [PATCH v4 00/10] devm_led_classdev_register() usage problem George Stark
2023-12-14 17:36 ` [PATCH v4 01/10] leds: aw2013: unlock mutex before destroying it George Stark
2024-02-23 15:07 ` (subset) " Lee Jones
2023-12-14 17:36 ` [PATCH v4 02/10] locking: introduce devm_mutex_init George Stark
2023-12-14 18:48 ` Waiman Long
2023-12-14 19:53 ` Christophe Leroy
2023-12-14 21:48 ` Waiman Long
2023-12-15 5:46 ` Christophe Leroy
2023-12-17 1:05 ` George Stark
2023-12-17 9:31 ` Christophe Leroy
2023-12-18 13:26 ` George Stark
2023-12-14 19:47 ` Christophe Leroy
2023-12-15 6:22 ` [PATCH RFC v4-bis] " Christophe Leroy
2023-12-15 15:58 ` Andy Shevchenko
2023-12-15 17:51 ` Christophe Leroy
2023-12-16 1:30 ` Waiman Long
2023-12-14 17:36 ` [PATCH v4 03/10] leds: aw2013: use devm API to cleanup module's resources George Stark
2023-12-14 17:36 ` [PATCH v4 04/10] leds: aw200xx: " George Stark
2023-12-14 17:36 ` [PATCH v4 05/10] leds: lp3952: " George Stark
2023-12-14 17:36 ` [PATCH v4 06/10] leds: lm3532: " George Stark
2023-12-14 17:36 ` George Stark [this message]
2023-12-14 17:36 ` [PATCH v4 08/10] leds: mlxreg: use devm_mutex_init for mutex initializtion George Stark
2023-12-14 17:36 ` [PATCH v4 09/10] leds: an30259a: use devm_mutext_init for mutext initialization George Stark
2023-12-14 17:36 ` [PATCH v4 10/10] leds: powernv: use LED_RETAIN_AT_SHUTDOWN flag for leds George Stark
2023-12-21 15:11 ` [PATCH v4 00/10] devm_led_classdev_register() usage problem Lee Jones
2024-02-09 17:11 ` Andy Shevchenko
2024-02-11 23:52 ` [DMARC error][SPF error] " George Stark
2024-02-12 9:53 ` Andy Shevchenko
2024-02-13 0:14 ` George Stark
2024-02-13 10:55 ` Andy Shevchenko
2024-02-13 23:56 ` George Stark
2024-02-09 17:17 ` Andy Shevchenko
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