Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=199fb21d520ac8c09de1f1288e667988815aa79a
Commit:     199fb21d520ac8c09de1f1288e667988815aa79a
Parent:     c11eef21aa119a41fa210b9693f2346997885bcf
Author:     David Brownell <[EMAIL PROTECTED]>
AuthorDate: Wed Oct 31 10:37:37 2007 +0100
Committer:  Richard Purdie <[EMAIL PROTECTED]>
CommitDate: Mon Nov 5 21:54:41 2007 +0000

    leds: bugfixes for leds-gpio
    
    Three bugfixes to the leds-gpio driver, plus minor whitespace tweaks:
    
     - Do the INIT_WORK() before registering each LED, so if its trigger
       becomes immediately active it can schedule work without oopsing..
    
     - Use normal registration, not platform_driver_probe(), so that
       devices appearing "late" (hotplug type) can still be bound.
    
     - Mark the driver remove code as "__devexit", preventing oopses
       when the underlying device is removed.
    
    These issues came up when using this driver with some GPIO expanders
    living on serial busses, which act unlike "normal" platform devices:
    they can appear and vanish along with the serial bus driver.
    
    Signed-off-by: David Brownell <[EMAIL PROTECTED]>
    Signed-off-by: Richard Purdie <[EMAIL PROTECTED]>
---
 drivers/leds/leds-gpio.c |   20 +++++++++++---------
 1 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 47d90db..99bc500 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -60,7 +60,7 @@ static void gpio_led_set(struct led_classdev *led_cdev,
                gpio_set_value(led_dat->gpio, level);
 }
 
-static int __init gpio_led_probe(struct platform_device *pdev)
+static int gpio_led_probe(struct platform_device *pdev)
 {
        struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
        struct gpio_led *cur_led;
@@ -93,13 +93,13 @@ static int __init gpio_led_probe(struct platform_device 
*pdev)
 
                gpio_direction_output(led_dat->gpio, led_dat->active_low);
 
+               INIT_WORK(&led_dat->work, gpio_led_work);
+
                ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
                if (ret < 0) {
                        gpio_free(led_dat->gpio);
                        goto err;
                }
-
-               INIT_WORK(&led_dat->work, gpio_led_work);
        }
 
        platform_set_drvdata(pdev, leds_data);
@@ -110,17 +110,17 @@ err:
        if (i > 0) {
                for (i = i - 1; i >= 0; i--) {
                        led_classdev_unregister(&leds_data[i].cdev);
+                       cancel_work_sync(&leds_data[i].work);
                        gpio_free(leds_data[i].gpio);
                }
        }
 
-       flush_scheduled_work();
        kfree(leds_data);
 
        return ret;
 }
 
-static int __exit gpio_led_remove(struct platform_device *pdev)
+static int __devexit gpio_led_remove(struct platform_device *pdev)
 {
        int i;
        struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
@@ -130,9 +130,10 @@ static int __exit gpio_led_remove(struct platform_device 
*pdev)
 
        for (i = 0; i < pdata->num_leds; i++) {
                led_classdev_unregister(&leds_data[i].cdev);
+               cancel_work_sync(&leds_data[i].work);
                gpio_free(leds_data[i].gpio);
        }
-       
+
        kfree(leds_data);
 
        return 0;
@@ -144,7 +145,7 @@ static int gpio_led_suspend(struct platform_device *pdev, 
pm_message_t state)
        struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
        struct gpio_led_data *leds_data;
        int i;
-       
+
        leds_data = platform_get_drvdata(pdev);
 
        for (i = 0; i < pdata->num_leds; i++)
@@ -172,7 +173,8 @@ static int gpio_led_resume(struct platform_device *pdev)
 #endif
 
 static struct platform_driver gpio_led_driver = {
-       .remove         = __exit_p(gpio_led_remove),
+       .probe          = gpio_led_probe,
+       .remove         = __devexit_p(gpio_led_remove),
        .suspend        = gpio_led_suspend,
        .resume         = gpio_led_resume,
        .driver         = {
@@ -183,7 +185,7 @@ static struct platform_driver gpio_led_driver = {
 
 static int __init gpio_led_init(void)
 {
-       return platform_driver_probe(&gpio_led_driver, gpio_led_probe);
+       return platform_driver_register(&gpio_led_driver);
 }
 
 static void __exit gpio_led_exit(void)
-
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