Commit 1e4cd625 authored Jul 20, 2015 by Dmitry Torokhov Committed by Alexandre Belloni Sep 05, 2015

rtc: dev: properly manage lifetime of dev and cdev in rtc device



struct rtc embeds both struct dev and struct cdev.  Unfortunately character
device structure may outlive the parent rtc structure unless we set it up
as parent of character device so that it will stay pinned until character
device is freed.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

parent c3b399a4

drivers/rtc/rtc-dev.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -477,6 +477,7 @@ void rtc_dev_prepare(struct rtc_device *rtc)

		cdev_init(&rtc->char_dev, &rtc_dev_fops);
		rtc->char_dev.owner = rtc->owner;
		rtc->char_dev.kobj.parent = &rtc->dev.kobj;
		}

		void rtc_dev_add_device(struct rtc_device *rtc)