diff -puN drivers/isdn/hysdn/hysdn_boot.c~isdn-misplaced-parenthesis-in-pof_handle_data drivers/isdn/hysdn/hysdn_boot.c
--- a/drivers/isdn/hysdn/hysdn_boot.c~isdn-misplaced-parenthesis-in-pof_handle_data
+++ a/drivers/isdn/hysdn/hysdn_boot.c
@@ -143,7 +143,7 @@ pof_handle_data(hysdn_card * card, int d
 					     (boot->pof_recid == TAG_CABSDATA) ? "CABSDATA" : "ABSDATA",
 					     datlen, boot->pof_recoffset);
 
-			if ((boot->last_error = card->writebootseq(card, boot->buf.BootBuf, datlen) < 0))
+			if ((boot->last_error = card->writebootseq(card, boot->buf.BootBuf, datlen)) < 0)
 				return (boot->last_error);	/* error writing data */
 
 			if (boot->pof_recoffset + datlen >= boot->pof_reclen)