diff options
Diffstat (limited to 'drivers/isdn/capi/capi.c')
| -rw-r--r-- | drivers/isdn/capi/capi.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 6ca0bb9..8a35029 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -20,6 +20,7 @@ #include <linux/signal.h> #include <linux/mutex.h> #include <linux/mm.h> +#include <linux/smp_lock.h> #include <linux/timer.h> #include <linux/wait.h> #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE @@ -465,7 +466,7 @@ static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) ld = tty_ldisc_ref(mp->tty); if (ld == NULL) return -1; - if (ld->receive_buf == NULL) { + if (ld->ops->receive_buf == NULL) { #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS) printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n"); #endif @@ -500,7 +501,7 @@ static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n", datahandle, skb->len); #endif - ld->receive_buf(mp->tty, skb->data, NULL, skb->len); + ld->ops->receive_buf(mp->tty, skb->data, NULL, skb->len); kfree_skb(skb); tty_ldisc_deref(ld); return 0; @@ -983,13 +984,17 @@ capi_ioctl(struct inode *inode, struct file *file, static int capi_open(struct inode *inode, struct file *file) { + int ret; + + lock_kernel(); if (file->private_data) - return -EEXIST; - - if ((file->private_data = capidev_alloc()) == NULL) - return -ENOMEM; - - return nonseekable_open(inode, file); + ret = -EEXIST; + else if ((file->private_data = capidev_alloc()) == NULL) + ret = -ENOMEM; + else + ret = nonseekable_open(inode, file); + unlock_kernel(); + return ret; } static int |