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Commit 07f696c7 authored by Sven Wegener's avatar Sven Wegener Committed by Linus Torvalds
Browse files

leds-fsg: change order of initialization and deinitialization 



On initialization, we first do the ioremap and then register the led devices.
On deinitialization, we do it in reverse order. This prevents someone calling
into the brightness_set functions with an invalid latch_address.

Signed-off-by: default avatarSven Wegener <sven.wegener@stealer.net>
Acked-by: default avatarRod Whitby <rod@whitby.id.au>
Acked-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7fe7b2f4

drivers/leds/leds-fsg.c

+14 −14
Original line number Diff line number Diff line
@@ -161,6 +161,16 @@ static int fsg_led_probe(struct platform_device *pdev) 
{

	int ret;



	/* Map the LED chip select address space */

	latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);

	if (!latch_address) {

		ret = -ENOMEM;

		goto failremap;

	}



	latch_value = 0xffff;

	*latch_address = latch_value;



	ret = led_classdev_register(&pdev->dev, &fsg_wlan_led);

	if (ret < 0)

		goto failwlan;
@@ -185,20 +195,8 @@ static int fsg_led_probe(struct platform_device *pdev) 
	if (ret < 0)

		goto failring;



	/* Map the LED chip select address space */

	latch_address = (unsigned short *) ioremap(IXP4XX_EXP_BUS_BASE(2), 512);

	if (!latch_address) {

		ret = -ENOMEM;

		goto failremap;

	}



	latch_value = 0xffff;

	*latch_address = latch_value;



	return ret;



 failremap:

	led_classdev_unregister(&fsg_ring_led);

 failring:

	led_classdev_unregister(&fsg_sync_led);

 failsync:
@@ -210,14 +208,14 @@ static int fsg_led_probe(struct platform_device *pdev) 
 failwan:

	led_classdev_unregister(&fsg_wlan_led);

 failwlan:

	iounmap(latch_address);

 failremap:



	return ret;

}



static int fsg_led_remove(struct platform_device *pdev)

{

	iounmap(latch_address);



	led_classdev_unregister(&fsg_wlan_led);

	led_classdev_unregister(&fsg_wan_led);

	led_classdev_unregister(&fsg_sata_led);
@@ -225,6 +223,8 @@ static int fsg_led_remove(struct platform_device *pdev) 
	led_classdev_unregister(&fsg_sync_led);

	led_classdev_unregister(&fsg_ring_led);



	iounmap(latch_address);



	return 0;

}