[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}

To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/isdn/pcbit/capi.c b/drivers/isdn/pcbit/capi.c
index 47c59e95898d..7b55e151f1b0 100644
--- a/drivers/isdn/pcbit/capi.c
+++ b/drivers/isdn/pcbit/capi.c
@@ -429,8 +429,9 @@ int capi_decode_conn_ind(struct pcbit_chan * chan,
                 if (!(info->data.setup.CallingPN = kmalloc(len - count + 1, GFP_ATOMIC)))
                         return -1;
        
-                memcpy(info->data.setup.CallingPN, skb->data + count + 1, 
-                       len - count);
+                skb_copy_from_linear_data_offset(skb, count + 1,
+                                                 info->data.setup.CallingPN,
+                                                 len - count);
                 info->data.setup.CallingPN[len - count] = 0;
 
         }
@@ -457,8 +458,9 @@ int capi_decode_conn_ind(struct pcbit_chan * chan,
                 if (!(info->data.setup.CalledPN = kmalloc(len - count + 1, GFP_ATOMIC)))
                         return -1;
         
-                memcpy(info->data.setup.CalledPN, skb->data + count + 1, 
-                       len - count); 
+                skb_copy_from_linear_data_offset(skb, count + 1,
+                                                 info->data.setup.CalledPN,
+                                                 len - count);
                 info->data.setup.CalledPN[len - count] = 0;
 
         }
@@ -539,7 +541,7 @@ int capi_decode_conn_actv_ind(struct pcbit_chan * chan, struct sk_buff *skb)
 
 #ifdef DEBUG
         if (len > 1 && len < 31) {
-                memcpy(str, skb->data + 2, len - 1);
+                skb_copy_from_linear_data_offset(skb, 2, str, len - 1);
                 str[len] = 0;
                 printk(KERN_DEBUG "Connected Party Number: %s\n", str);
         }