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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: Sven Wegener <sven.wegener@stealer.net>
Acked-by: Rod Whitby <rod@whitby.id.au>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sven Wegener 2008-10-03 15:23:47 -07:00 committed by Linus Torvalds
parent 7fe7b2f4ec
commit 07f696c777
1 changed files with 14 additions and 14 deletions
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28
drivers/leds/leds-fsg.c
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@ -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;
}