drivers/rtc/rtc-omap.c: fix a memory leak
request_mem_region() will call kzalloc to allocate memory for struct
resource. release_resource() unregisters the resource but does not free
the allocated memory, thus use release_mem_region() instead to fix the
memory leak.
Also add a missing iounmap() in omap_rtc_remove().
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 73377b0..e72b523 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -429,13 +429,14 @@
fail0:
iounmap(rtc_base);
fail:
- release_resource(mem);
+ release_mem_region(mem->start, resource_size(mem));
return -EIO;
}
static int __exit omap_rtc_remove(struct platform_device *pdev)
{
struct rtc_device *rtc = platform_get_drvdata(pdev);
+ struct resource *mem = dev_get_drvdata(&rtc->dev);
device_init_wakeup(&pdev->dev, 0);
@@ -447,8 +448,9 @@
if (omap_rtc_timer != omap_rtc_alarm)
free_irq(omap_rtc_alarm, rtc);
- release_resource(dev_get_drvdata(&rtc->dev));
rtc_device_unregister(rtc);
+ iounmap(rtc_base);
+ release_mem_region(mem->start, resource_size(mem));
return 0;
}