mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-22 18:44:44 +08:00
4a102b4d14
There is a bug in omap2_mbox_probe() where we try do:
mbox->irq = platform_get_irq(pdev, info->irq_id);
if (mbox->irq < 0) {
The problem is that mbox->irq is unsigned so the error handling doesn't
work. I've changed it to a signed integer.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Suman Anna <s-anna@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Omar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
|
|
* omap-mbox.h: OMAP mailbox internal definitions
|
|
*
|
|
* 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 OMAP_MBOX_H
|
|
#define OMAP_MBOX_H
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kfifo.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/omap-mailbox.h>
|
|
|
|
typedef int __bitwise omap_mbox_type_t;
|
|
#define OMAP_MBOX_TYPE1 ((__force omap_mbox_type_t) 1)
|
|
#define OMAP_MBOX_TYPE2 ((__force omap_mbox_type_t) 2)
|
|
|
|
struct omap_mbox_ops {
|
|
omap_mbox_type_t type;
|
|
int (*startup)(struct omap_mbox *mbox);
|
|
void (*shutdown)(struct omap_mbox *mbox);
|
|
/* fifo */
|
|
mbox_msg_t (*fifo_read)(struct omap_mbox *mbox);
|
|
void (*fifo_write)(struct omap_mbox *mbox, mbox_msg_t msg);
|
|
int (*fifo_empty)(struct omap_mbox *mbox);
|
|
int (*fifo_full)(struct omap_mbox *mbox);
|
|
/* irq */
|
|
void (*enable_irq)(struct omap_mbox *mbox,
|
|
omap_mbox_irq_t irq);
|
|
void (*disable_irq)(struct omap_mbox *mbox,
|
|
omap_mbox_irq_t irq);
|
|
void (*ack_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
|
|
int (*is_irq)(struct omap_mbox *mbox, omap_mbox_irq_t irq);
|
|
/* ctx */
|
|
void (*save_ctx)(struct omap_mbox *mbox);
|
|
void (*restore_ctx)(struct omap_mbox *mbox);
|
|
};
|
|
|
|
struct omap_mbox_queue {
|
|
spinlock_t lock;
|
|
struct kfifo fifo;
|
|
struct work_struct work;
|
|
struct tasklet_struct tasklet;
|
|
struct omap_mbox *mbox;
|
|
bool full;
|
|
};
|
|
|
|
struct omap_mbox {
|
|
const char *name;
|
|
int irq;
|
|
struct omap_mbox_queue *txq, *rxq;
|
|
struct omap_mbox_ops *ops;
|
|
struct device *dev;
|
|
void *priv;
|
|
int use_count;
|
|
struct blocking_notifier_head notifier;
|
|
};
|
|
|
|
int omap_mbox_register(struct device *parent, struct omap_mbox **);
|
|
int omap_mbox_unregister(void);
|
|
|
|
#endif /* OMAP_MBOX_H */
|