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authorSven Wegener <sven.wegener@stealer.net>2008-10-03 15:23:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-03 18:22:18 -0700
commit07f696c7772fb3501e9531de38333c49143a8d52 (patch)
tree790f946dac7a7be022cc9f87cc79768fe431327f
parent7fe7b2f4ec14d6517078c5bc32b04301b468041c (diff)
downloadlinux-stericsson-07f696c7772fb3501e9531de38333c49143a8d52.tar.gz
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>
-rw-r--r--drivers/leds/leds-fsg.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/drivers/leds/leds-fsg.c b/drivers/leds/leds-fsg.c
index be0e12144b8b..34935155c1c0 100644
--- a/drivers/leds/leds-fsg.c
+++ b/drivers/leds/leds-fsg.c
@@ -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;
}