This commit was manufactured by cvs2svn to create tag

[linux-2.6.git] / drivers / net / wan / sdla_chdlc.c

diff --git a/drivers/net/wan/sdla_chdlc.c b/drivers/net/wan/sdla_chdlc.c
index afbe002..e66c250 100644 (file)
--- a/drivers/net/wan/sdla_chdlc.c
+++ b/drivers/net/wan/sdla_chdlc.c
@@ -3739,7 +3739,8 @@ static int wanpipe_tty_open(struct tty_struct *tty, struct file * filp)
        return 0;
 }
 
-static int wanpipe_tty_write(struct tty_struct * tty, const unsigned char *buf, int count)
+static int wanpipe_tty_write(struct tty_struct * tty, int from_user,
+                   const unsigned char *buf, int count)
 {
        unsigned long smp_flags=0;
        sdla_t *card=NULL;
@@ -3783,16 +3784,58 @@ static int wanpipe_tty_write(struct tty_struct * tty, const unsigned char *buf,
                return -EINVAL; 
        }
        
-       if (chdlc_send(card,(void*)buf,count)){
-               dbg_printk(KERN_INFO "%s: Failed to send, retry later: kernel!\n",
-                               card->devname);
-               clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
-
-               wanpipe_tty_trigger_tx_irq(card);
+       if (from_user) {
                
-               if(card->hw.type != SDLA_S514)
-                       s508_unlock(card,&smp_flags);
-               return 0;
+               unsigned char *tmp_buf;
+               
+               if ((tmp_buf=card->tty_buf)==NULL){
+                       dbg_printk(KERN_INFO "No TTY BUF in Write\n");
+                       
+                       clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
+                       
+                       if(card->hw.type != SDLA_S514)
+                               s508_unlock(card,&smp_flags);
+                       
+                       return -ENOMEM;
+               }
+               
+               if (copy_from_user(tmp_buf,buf,count)){
+                       dbg_printk(KERN_INFO "%s: Failed to copy from user!\n",
+                                       card->devname);
+                       
+                       clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
+                       
+                       if(card->hw.type != SDLA_S514)
+                               s508_unlock(card,&smp_flags);
+                       
+                       return -EINVAL;
+               }
+
+               if (chdlc_send(card,(void*)tmp_buf,count)){
+                       dbg_printk(KERN_INFO "%s: Failed to send, retry later: user!\n",
+                                       card->devname);
+                       
+                       clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
+                       
+                       wanpipe_tty_trigger_tx_irq(card);
+                       
+                       if(card->hw.type != SDLA_S514)
+                               s508_unlock(card,&smp_flags);
+                       return 0;
+               }
+
+       }else{
+               if (chdlc_send(card,(void*)buf,count)){
+                       dbg_printk(KERN_INFO "%s: Failed to send, retry later: kernel!\n",
+                                       card->devname);
+                       clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
+       
+                       wanpipe_tty_trigger_tx_irq(card);
+                       
+                       if(card->hw.type != SDLA_S514)
+                               s508_unlock(card,&smp_flags);
+                       return 0;
+               }
        }
        dbg_printk(KERN_INFO "%s: Packet sent OK: %i\n",card->devname,count);
        clear_bit(SEND_CRIT,(void*)&card->wandev.critical);