/*
* linux/sound/wm8996.h -- Platform data for WM8996
*
* Copyright 2011 Wolfson Microelectronics. PLC.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __LINUX_SND_WM8996_H
#define __LINUX_SND_WM8996_H
enum wm8996_inmode {
WM8996_DIFFERRENTIAL_1 = 0, /* IN1xP - IN1xN */
WM8996_INVERTING = 1, /* IN1xN */
WM8996_NON_INVERTING = 2, /* IN1xP */
WM8996_DIFFERENTIAL_2 = 3, /* IN2xP - IN2xP */
};
/**
* ReTune Mobile configurations are specified with a label, sample
* rate and set of values to write (the enable bits will be ignored).
*
* Configurations are expected to be generated using the ReTune Mobile
* control panel in WISCE - see http://www.wolfsonmicro.com/wisce/
*/
struct wm8996_retune_mobile_config {
const char *name;
int rate;
u16 regs[20];
};
#define WM8996_SET_DEFAULT 0x10000
struct wm8996_pdata {
int irq_flags; /** Set IRQ trigger flags; default active low */
int ldo_ena; /** GPIO for LDO1; -1 for none */
int micdet_def; /** Default MICDET_SRC/HP1FB_SRC/MICD_BIAS */
enum wm8996_inmode inl_mode;
enum wm8996_inmode inr_mode;
u32 spkmute_seq; /** Value for register 0x802 */
int gpio_base;
u32 gpio_default[5];
int num_retune_mobile_cfgs;
struct wm8996_retune_mobile_config *retune_mobile_cfgs;
};
#endif
tch'/>
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node. This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.
The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards. There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()")
Cc: stable@vger.kernel.org # v4.6+