1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/isdn/gigaset/i4l.c b/drivers/isdn/gigaset/i4l.c
index c22e5ace8276..f01c3c2e2e46 100644
--- a/drivers/isdn/gigaset/i4l.c
+++ b/drivers/isdn/gigaset/i4l.c
@@ -16,7 +16,10 @@
 #include "gigaset.h"
 #include <linux/isdnif.h>
 
+#define SBUFSIZE        4096    /* sk_buff payload size */
+#define TRANSBUFSIZE    768     /* bytes per skb for transparent receive */
 #define HW_HDR_LEN      2       /* Header size used to store ack info */
+#define MAX_BUF_SIZE    (SBUFSIZE - HW_HDR_LEN) /* max data packet from LL */
 
 /* == Handling of I4L IO =====================================================*/
 
@@ -231,6 +234,15 @@ static int command_from_LL(isdn_ctrl *cntrl)
                         dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n");
                         return -EBUSY;
                 }
+                switch (bcs->proto2) {
+                case L2_HDLC:
+                        bcs->rx_bufsize = SBUFSIZE;
+                        break;
+                default:                        /* assume transparent */
+                        bcs->rx_bufsize = TRANSBUFSIZE;
+                }
+                dev_kfree_skb(bcs->rx_skb);
+                gigaset_new_rx_skb(bcs);
 
                 commands = kzalloc(AT_NUM*(sizeof *commands), GFP_ATOMIC);
                 if (!commands) {
@@ -314,6 +326,15 @@ static int command_from_LL(isdn_ctrl *cntrl)
                         return -EINVAL;
                 }
                 bcs = cs->bcs + ch;
+                switch (bcs->proto2) {
+                case L2_HDLC:
+                        bcs->rx_bufsize = SBUFSIZE;
+                        break;
+                default:                        /* assume transparent */
+                        bcs->rx_bufsize = TRANSBUFSIZE;
+                }
+                dev_kfree_skb(bcs->rx_skb);
+                gigaset_new_rx_skb(bcs);
                 if (!gigaset_add_event(cs, &bcs->at_state,
                                        EV_ACCEPT, NULL, 0, NULL))
                         return -ENOMEM;