1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c
index 6d05946b445e..124ff530da82 100644
--- a/drivers/isdn/hardware/mISDN/hfcsusb.c
+++ b/drivers/isdn/hardware/mISDN/hfcsusb.c
@@ -262,8 +262,7 @@ hfcsusb_ph_info(struct hfcsusb *hw)
         struct dchannel *dch = &hw->dch;
         int i;
 
-        phi = kzalloc(sizeof(struct ph_info) +
-                      dch->dev.nrbchan * sizeof(struct ph_info_ch), GFP_ATOMIC);
+        phi = kzalloc(struct_size(phi, bch, dch->dev.nrbchan), GFP_ATOMIC);
         phi->dch.ch.protocol = hw->protocol;
         phi->dch.ch.Flags = dch->Flags;
         phi->dch.state = dch->state;