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Input: serio - add lockdep annotations

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Signed-off-by: Jiri Kosina <jikos@jikos.cz>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Jiri Kosina 2006-10-11 01:45:31 -04:00 committed by Dmitry Torokhov
parent 4dfbb9d8c6
commit 88aa0103e4
3 changed files with 8 additions and 2 deletions
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3
drivers/input/serio/libps2.c
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@ -189,7 +189,7 @@ int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command)
return -1; return -1;
} }
mutex_lock_nested(&ps2dev->cmd_mutex, SINGLE_DEPTH_NESTING); mutex_lock(&ps2dev->cmd_mutex);
serio_pause_rx(ps2dev->serio); serio_pause_rx(ps2dev->serio);
ps2dev->flags = command == PS2_CMD_GETID ? PS2_FLAG_WAITID : 0; ps2dev->flags = command == PS2_CMD_GETID ? PS2_FLAG_WAITID : 0;
@ -296,6 +296,7 @@ EXPORT_SYMBOL(ps2_schedule_command);
void ps2_init(struct ps2dev *ps2dev, struct serio *serio) void ps2_init(struct ps2dev *ps2dev, struct serio *serio)
{ {
mutex_init(&ps2dev->cmd_mutex); mutex_init(&ps2dev->cmd_mutex);
lockdep_set_subclass(&ps2dev->cmd_mutex, serio->depth);
init_waitqueue_head(&ps2dev->wait); init_waitqueue_head(&ps2dev->wait);
ps2dev->serio = serio; ps2dev->serio = serio;
} }

6
drivers/input/serio/serio.c
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@ -538,8 +538,12 @@ static void serio_init_port(struct serio *serio)
"serio%ld", (long)atomic_inc_return(&serio_no) - 1); "serio%ld", (long)atomic_inc_return(&serio_no) - 1);
serio->dev.bus = &serio_bus; serio->dev.bus = &serio_bus;
serio->dev.release = serio_release_port; serio->dev.release = serio_release_port;
if (serio->parent) if (serio->parent) {
serio->dev.parent = &serio->parent->dev; serio->dev.parent = &serio->parent->dev;
serio->depth = serio->parent->depth + 1;
} else
serio->depth = 0;
lockdep_set_subclass(&serio->lock, serio->depth);
} }
/* /*

1
include/linux/serio.h
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@ -41,6 +41,7 @@ struct serio {
void (*stop)(struct serio *); void (*stop)(struct serio *);
struct serio *parent, *child; struct serio *parent, *child;
unsigned int depth; /* level of nesting in serio hierarchy */
struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */ struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */
struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */ struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */