Paul Bolle 8d2c3ab444 ser_gigaset: use container_of() instead of detour ... The purpose of gigaset_device_release() is to kfree() the struct ser_cardstate that contains our struct device. This is done via a bit of a detour. First we make our struct device's driver_data point to the container of our struct ser_cardstate (which is a struct cardstate). In gigaset_device_release() we then retrieve that driver_data again. And after that we finally kfree() the struct ser_cardstate that was saved in the struct cardstate. All of this can be achieved much easier by using container_of() to get from our struct device to its container, struct ser_cardstate. Do so. Note that at the time the detour was implemented commit b8b2c7d845 ("base/platform: assert that dev_pm_domain callbacks are called unconditionally") had just entered the tree. That commit disconnected our platform_device and our platform_driver. These were reconnected again in v4.5-rc2 through commit 25cad69f21 ("base/platform: Fix platform drivers with no probe callback"). And one of the consequences of that fix was that it broke the detour via driver_data. That's because it made __device_release_driver() stop being a NOP for our struct device and actually do stuff again. One of the things it now does, is setting our driver_data to NULL. That, in turn, makes it impossible for gigaset_device_release() to get to our struct cardstate. Which has the net effect of leaking a struct ser_cardstate at every call of this driver's tty close() operation. So using container_of() has the additional benefit of actually working. Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-02-19 15:52:41 -05:00
..
act2000	isdn: act200: fix MODULE_PARM_DESC() typo	2016-01-08 13:24:20 -05:00
capi	isdn/capi: Use setup_timer	2015-05-31 21:36:37 -07:00
divert	isdn: divert, hysdn: fix interruptible_sleep_on race	2014-02-26 16:06:13 -05:00
gigaset	ser_gigaset: use container_of() instead of detour	2016-02-19 15:52:41 -05:00
hardware	mISDN: prevent possible NULL pointer dereference	2016-02-18 14:59:35 -05:00
hisax	isdn: Partially revert debug format string usage clean up	2015-11-25 11:49:58 -05:00
hysdn	isdn: fix misspelling of current function in string	2014-12-09 16:18:46 -05:00
i4l	isdn: remove spellcaster driver	2015-12-01 16:06:44 -05:00
icn	arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead	2015-08-10 23:07:05 -04:00
isdnloop	drivers: isdn: isdnloop: isdnloop.c: Remove parenthesis around return values, as specified in CodingStyle.	2015-02-05 15:40:23 -08:00
mISDN	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-24 06:54:12 -07:00
pcbit	isdn: fix misspelling of current function in string	2014-12-09 16:18:46 -05:00
Kconfig	tty: Added a CONFIG_TTY option to allow removal of TTY	2013-01-18 16:15:27 -08:00
Makefile	isdn: remove spellcaster driver	2015-12-01 16:06:44 -05:00