X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fisdn%2Fcapi%2Fcapi.c;h=d22c0224fde6505e9695e9c702ab42c4e3d7aaf4;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=623adbb0d13abe8098912f0203c9218211967019;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 623adbb0d..d22c0224f 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -9,7 +9,6 @@ * */ -#include #include #include #include @@ -39,7 +38,6 @@ #include #include #include -#include #include #include #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE) @@ -87,6 +85,11 @@ struct capincci; #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE struct capiminor; +struct datahandle_queue { + struct list_head list; + u16 datahandle; +}; + struct capiminor { struct list_head list; struct capincci *nccip; @@ -109,12 +112,9 @@ struct capiminor { int outbytes; /* transmit path */ - struct datahandle_queue { - struct datahandle_queue *next; - u16 datahandle; - } *ackqueue; + struct list_head ackqueue; int nack; - + spinlock_t ackqlock; }; #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ @@ -156,48 +156,54 @@ static LIST_HEAD(capiminor_list); static int capincci_add_ack(struct capiminor *mp, u16 datahandle) { - struct datahandle_queue *n, **pp; + struct datahandle_queue *n; + unsigned long flags; n = kmalloc(sizeof(*n), GFP_ATOMIC); - if (!n) { - printk(KERN_ERR "capi: alloc datahandle failed\n"); - return -1; + if (unlikely(!n)) { + printk(KERN_ERR "capi: alloc datahandle failed\n"); + return -1; } - n->next = NULL; n->datahandle = datahandle; - for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) ; - *pp = n; + INIT_LIST_HEAD(&n->list); + spin_lock_irqsave(&mp->ackqlock, flags); + list_add_tail(&n->list, &mp->ackqueue); mp->nack++; + spin_unlock_irqrestore(&mp->ackqlock, flags); return 0; } static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) { - struct datahandle_queue **pp, *p; + struct datahandle_queue *p, *tmp; + unsigned long flags; - for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) { - if ((*pp)->datahandle == datahandle) { - p = *pp; - *pp = (*pp)->next; + spin_lock_irqsave(&mp->ackqlock, flags); + list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { + if (p->datahandle == datahandle) { + list_del(&p->list); kfree(p); mp->nack--; + spin_unlock_irqrestore(&mp->ackqlock, flags); return 0; } } + spin_unlock_irqrestore(&mp->ackqlock, flags); return -1; } static void capiminor_del_all_ack(struct capiminor *mp) { - struct datahandle_queue **pp, *p; + struct datahandle_queue *p, *tmp; + unsigned long flags; - pp = &mp->ackqueue; - while (*pp) { - p = *pp; - *pp = (*pp)->next; + spin_lock_irqsave(&mp->ackqlock, flags); + list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { + list_del(&p->list); kfree(p); mp->nack--; } + spin_unlock_irqrestore(&mp->ackqlock, flags); } @@ -209,17 +215,18 @@ static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) unsigned int minor = 0; unsigned long flags; - mp = kmalloc(sizeof(*mp), GFP_ATOMIC); + mp = kzalloc(sizeof(*mp), GFP_ATOMIC); if (!mp) { printk(KERN_ERR "capi: can't alloc capiminor\n"); return NULL; } - memset(mp, 0, sizeof(struct capiminor)); mp->ap = ap; mp->ncci = ncci; mp->msgid = 0; atomic_set(&mp->ttyopencount,0); + INIT_LIST_HEAD(&mp->ackqueue); + spin_lock_init(&mp->ackqlock); skb_queue_head_init(&mp->inqueue); skb_queue_head_init(&mp->outqueue); @@ -296,10 +303,9 @@ static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) struct capiminor *mp = NULL; #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ - np = kmalloc(sizeof(*np), GFP_ATOMIC); + np = kzalloc(sizeof(*np), GFP_ATOMIC); if (!np) return NULL; - memset(np, 0, sizeof(struct capincci)); np->ncci = ncci; np->cdev = cdev; #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE @@ -376,10 +382,9 @@ static struct capidev *capidev_alloc(void) struct capidev *cdev; unsigned long flags; - cdev = kmalloc(sizeof(*cdev), GFP_KERNEL); + cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); if (!cdev) return NULL; - memset(cdev, 0, sizeof(struct capidev)); init_MUTEX(&cdev->ncci_list_sem); skb_queue_head_init(&cdev->recvqueue); @@ -1002,7 +1007,7 @@ static int capinc_tty_open(struct tty_struct * tty, struct file * file) { struct capiminor *mp; - if ((mp = capiminor_find(iminor(file->f_dentry->d_inode))) == 0) + if ((mp = capiminor_find(iminor(file->f_path.dentry->d_inode))) == 0) return -ENXIO; if (mp->nccip == 0) return -ENXIO; @@ -1195,7 +1200,7 @@ static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, return error; } -static void capinc_tty_set_termios(struct tty_struct *tty, struct termios * old) +static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) { #ifdef _DEBUG_TTYFUNCS printk(KERN_DEBUG "capinc_tty_set_termios\n"); @@ -1290,7 +1295,7 @@ static int capinc_tty_read_proc(char *page, char **start, off_t off, static struct tty_driver *capinc_tty_driver; -static struct tty_operations capinc_ops = { +static const struct tty_operations capinc_ops = { .open = capinc_tty_open, .close = capinc_tty_close, .write = capinc_tty_write, @@ -1327,7 +1332,6 @@ static int capinc_tty_init(void) drv->owner = THIS_MODULE; drv->driver_name = "capi_nc"; - drv->devfs_name = "capi/"; drv->name = "capi"; drv->major = capi_ttymajor; drv->minor_start = 0; @@ -1485,6 +1489,7 @@ static int __init capi_init(void) { char *p; char *compileinfo; + int major_ret; if ((p = strchr(revision, ':')) != 0 && p[1]) { strlcpy(rev, p + 2, sizeof(rev)); @@ -1493,11 +1498,11 @@ static int __init capi_init(void) } else strcpy(rev, "1.0"); - if (register_chrdev(capi_major, "capi20", &capi_fops)) { + major_ret = register_chrdev(capi_major, "capi20", &capi_fops); + if (major_ret < 0) { printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); - return -EIO; + return major_ret; } - capi_class = class_create(THIS_MODULE, "capi"); if (IS_ERR(capi_class)) { unregister_chrdev(capi_major, "capi20"); @@ -1505,8 +1510,6 @@ static int __init capi_init(void) } class_device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); - devfs_mk_cdev(MKDEV(capi_major, 0), S_IFCHR | S_IRUSR | S_IWUSR, - "isdn/capi20"); #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE if (capinc_tty_init() < 0) { @@ -1541,7 +1544,6 @@ static void __exit capi_exit(void) class_device_destroy(capi_class, MKDEV(capi_major, 0)); class_destroy(capi_class); unregister_chrdev(capi_major, "capi20"); - devfs_remove("isdn/capi20"); #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE capinc_tty_exit();