mISDN cleanup user interface

The channelmap should have the same size on 32 and 64 bit systems
and should not depend on endianess.
Thanks to David Woodhouse for spotting this.

Signed-off-by: Karsten Keil <kkeil@suse.de>

5 files changed, 35 insertions, 15 deletions

diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index 2649ea55a9e..10144e871c0 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c
@@ -3971,7 +3971,7 @@ open_bchannel(struct hfc_multi *hc, struct dchannel *dch,
         struct bchannel *bch;
         int             ch;
 
-        if (!test_bit(rq->adr.channel, &dch->dev.channelmap[0]))
+        if (!test_channelmap(rq->adr.channel, dch->dev.channelmap))
                 return -EINVAL;
         if (rq->protocol == ISDN_P_NONE)
                 return -EINVAL;
@@ -4587,7 +4587,7 @@ init_e1_port(struct hfc_multi *hc, struct hm_map *m)
                 list_add(&bch->ch.list, &dch->dev.bchannels);
                 hc->chan[ch].bch = bch;
                 hc->chan[ch].port = 0;
-                test_and_set_bit(bch->nr, &dch->dev.channelmap[0]);
+                set_channelmap(bch->nr, dch->dev.channelmap);
         }
         /* set optical line type */
         if (port[Port_cnt] & 0x001) {
@@ -4755,7 +4755,7 @@ init_multi_port(struct hfc_multi *hc, int pt)
                 list_add(&bch->ch.list, &dch->dev.bchannels);
                 hc->chan[i + ch].bch = bch;
                 hc->chan[i + ch].port = pt;
-                test_and_set_bit(bch->nr, &dch->dev.channelmap[0]);
+                set_channelmap(bch->nr, dch->dev.channelmap);
         }
         /* set master clock */
         if (port[Port_cnt] & 0x001) {
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index 3231814e7ef..9cf5edbb1a9 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -2056,7 +2056,7 @@ setup_card(struct hfc_pci *card)
         card->dch.dev.nrbchan = 2;
         for (i = 0; i < 2; i++) {
                 card->bch[i].nr = i + 1;
-                test_and_set_bit(i + 1, &card->dch.dev.channelmap[0]);
+                set_channelmap(i + 1, card->dch.dev.channelmap);
                 card->bch[i].debug = debug;
                 mISDN_initbchannel(&card->bch[i], MAX_DATA_MEM);
                 card->bch[i].hw = card;
diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c
index 155b99780c4..e42150a5778 100644
--- a/drivers/isdn/mISDN/l1oip_core.c
+++ b/drivers/isdn/mISDN/l1oip_core.c
@@ -1006,8 +1006,7 @@ open_bchannel(struct l1oip *hc, struct dchannel *dch, struct channel_req *rq)
         struct bchannel *bch;
         int             ch;
 
-        if (!test_bit(rq->adr.channel & 0x1f,
-                &dch->dev.channelmap[rq->adr.channel >> 5]))
+        if (!test_channelmap(rq->adr.channel, dch->dev.channelmap))
                 return -EINVAL;
         if (rq->protocol == ISDN_P_NONE)
                 return -EINVAL;
@@ -1412,8 +1411,7 @@ init_card(struct l1oip *hc, int pri, int bundle)
                 bch->ch.nr = i + ch;
                 list_add(&bch->ch.list, &dch->dev.bchannels);
                 hc->chan[i + ch].bch = bch;
-                test_and_set_bit(bch->nr & 0x1f,
-                        &dch->dev.channelmap[bch->nr >> 5]);
+                set_channelmap(bch->nr, dch->dev.channelmap);
         }
         ret = mISDN_register_device(&dch->dev, hc->name);
         if (ret)
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index 4ba4cc364c9..e5a20f9542d 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -379,7 +379,7 @@ data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
                         di.protocol = dev->D.protocol;
                         memcpy(di.channelmap, dev->channelmap,
-                                MISDN_CHMAP_SIZE * 4);
+                                sizeof(di.channelmap));
                         di.nrbchan = dev->nrbchan;
                         strcpy(di.name, dev->name);
                         if (copy_to_user((void __user *)arg, &di, sizeof(di)))
@@ -637,7 +637,7 @@ base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
                         di.protocol = dev->D.protocol;
                         memcpy(di.channelmap, dev->channelmap,
-                                MISDN_CHMAP_SIZE * 4);
+                                sizeof(di.channelmap));
                         di.nrbchan = dev->nrbchan;
                         strcpy(di.name, dev->name);
                         if (copy_to_user((void __user *)arg, &di, sizeof(di)))
diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 5c948f33781..8f2d60da04e 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -37,7 +37,7 @@
  */
 #define MISDN_MAJOR_VERSION     1
 #define MISDN_MINOR_VERSION     0
-#define MISDN_RELEASE           18
+#define MISDN_RELEASE           19
 
 /* primitives for information exchange
  * generell format
@@ -242,7 +242,8 @@ struct mISDNhead {
 #define TEI_SAPI                63
 #define CTRL_SAPI               0
 
-#define MISDN_CHMAP_SIZE        4
+#define MISDN_MAX_CHANNEL       127
+#define MISDN_CHMAP_SIZE        ((MISDN_MAX_CHANNEL + 1) >> 3)
 
 #define SOL_MISDN       0
 
@@ -275,11 +276,32 @@ struct mISDN_devinfo {
         u_int                   Dprotocols;
         u_int                   Bprotocols;
         u_int                   protocol;
-        u_long                  channelmap[MISDN_CHMAP_SIZE];
+        u_char                  channelmap[MISDN_CHMAP_SIZE];
         u_int                   nrbchan;
         char                    name[MISDN_MAX_IDLEN];
 };
 
+static inline int
+test_channelmap(u_int nr, u_char *map)
+{
+        if (nr <= MISDN_MAX_CHANNEL)
+                return map[nr >> 3] & (1 << (nr & 7));
+        else
+                return 0;
+}
+
+static inline void
+set_channelmap(u_int nr, u_char *map)
+{
+        map[nr >> 3] |= (1 << (nr & 7));
+}
+
+static inline void
+clear_channelmap(u_int nr, u_char *map)
+{
+        map[nr >> 3] &= ~(1 << (nr & 7));
+}
+
 /* CONTROL_CHANNEL parameters */
 #define MISDN_CTRL_GETOP                0x0000
 #define MISDN_CTRL_LOOP                 0x0001
@@ -405,7 +427,7 @@ struct mISDNdevice {
         u_int                   Dprotocols;
         u_int                   Bprotocols;
         u_int                   nrbchan;
-        u_long                  channelmap[MISDN_CHMAP_SIZE];
+        u_char                  channelmap[MISDN_CHMAP_SIZE];
         struct list_head        bchannels;
         struct mISDNchannel     *teimgr;
         struct device           dev;
@@ -430,7 +452,7 @@ struct mISDNstack {
 #endif
 };
 
-/* global alloc/queue dunctions */
+/* global alloc/queue functions */
 
 static inline struct sk_buff *
 mI_alloc_skb(unsigned int len, gfp_t gfp_mask)