isdn: remove hisax driver

With the decline of ISDN, this seems to have become almost completely
obsolete, and even in the past years before that, almost all remaining
users appear to have used mISDN instead.

Birger Harzenetter noted that he is still using i4l/hisax to take
advantage of the 'divert' driver for call diversion, but otherwise uses
mISDN on the same hardware. This is a rare edge case as far as I
can tell, but we are still breaking an actively used work flow
(see https://xkcd.com/1172/).

We debated moving i4l/hisax to staging as an intermediate step, but as
he is not likely to change the setup, and that would just delay breaking
this use case.  The alternatives here are to stay on stable kernels
< 5.2, to create an external driver repository for isdn4linux, or to
add divert functionality to mISDN.

Cc: Birger Harzenetter <WIMPy@yeti.dk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 32 deletions

diff --git a/drivers/isdn/hisax/isdnl1.h b/drivers/isdn/hisax/isdnl1.h
deleted file mode 100644
index 66ddcab19bba..000000000000
--- a/drivers/isdn/hisax/isdnl1.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* $Id: isdnl1.h,v 2.12.2.3 2004/02/11 13:21:34 keil Exp $
- *
- * Layer 1 defines
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
-
-#define D_RCVBUFREADY	0
-#define D_XMTBUFREADY	1
-#define D_L1STATECHANGE	2
-#define D_CLEARBUSY	3
-#define D_RX_MON0	4
-#define D_RX_MON1	5
-#define D_TX_MON0	6
-#define D_TX_MON1	7
-#define E_RCVBUFREADY	8
-
-#define B_RCVBUFREADY	0
-#define B_XMTBUFREADY	1
-#define B_ACKPENDING	2
-
-__printf(2, 3)
-void debugl1(struct IsdnCardState *cs, char *fmt, ...);
-void DChannel_proc_xmt(struct IsdnCardState *cs);
-void DChannel_proc_rcv(struct IsdnCardState *cs);
-void l1_msg(struct IsdnCardState *cs, int pr, void *arg);
-void l1_msg_b(struct PStack *st, int pr, void *arg);
-void Logl2Frame(struct IsdnCardState *cs, struct sk_buff *skb, char *buf,
-		int dir);
-void BChannel_bh(struct work_struct *work);