[PATCH] trivial annotations in rio

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 80 insertions, 84 deletions

diff --git a/drivers/char/rio/rioctrl.c b/drivers/char/rio/rioctrl.c
index 75b2557c37ec..732e7db5f717 100644
--- a/drivers/char/rio/rioctrl.c
+++ b/drivers/char/rio/rioctrl.c
@@ -80,7 +80,7 @@ static char *_rioctrl_c_sccs_ = "@(#)rioctrl.c	1.3";
 static struct LpbReq LpbReq;
 static struct RupReq RupReq;
 static struct PortReq PortReq;
-static struct HostReq HostReq;
+static struct HostReq HostReq;	/* oh really?  global?  and no locking? */
 static struct HostDpRam HostDpRam;
 static struct DebugCtrl DebugCtrl;
 static struct Map MapEnt;
@@ -126,12 +126,7 @@ static int
 
 #define drv_makedev(maj, min) ((((uint) maj & 0xff) << 8) | ((uint) min & 0xff))
 
-int riocontrol(p, dev, cmd, arg, su)
-struct rio_info *p;
-dev_t dev;
-int cmd;
-caddr_t arg;
-int su;
+int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su)
 {
 	uint Host;		/* leave me unsigned! */
 	uint port;		/* and me! */
@@ -139,9 +134,10 @@ int su;
 	ushort loop;
 	int Entry;
 	struct Port *PortP;
-	struct PKT *PacketP;
+	struct PKT __iomem *PacketP;
 	int retval = 0;
 	unsigned long flags;
+	void __user *argp = (void __user *)arg;
 
 	func_enter();
 
@@ -149,7 +145,7 @@ int su;
 	Host = 0;
 	PortP = NULL;
 
-	rio_dprintk(RIO_DEBUG_CTRL, "control ioctl cmd: 0x%x arg: %p\n", cmd, arg);
+	rio_dprintk(RIO_DEBUG_CTRL, "control ioctl cmd: 0x%x arg: %p\n", cmd, argp);
 
 	switch (cmd) {
 		/*
@@ -160,11 +156,11 @@ int su;
 		 ** otherwise just the specified host card will be changed.
 		 */
 	case RIO_SET_TIMER:
-		rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_TIMER to %ldms\n", (unsigned long)arg);
+		rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_TIMER to %ldms\n", arg);
 		{
 			int host, value;
-			host = ((unsigned long) arg >> 16) & 0x0000FFFF;
-			value = (unsigned long) arg & 0x0000ffff;
+			host = (arg >> 16) & 0x0000FFFF;
+			value = arg & 0x0000ffff;
 			if (host == -1) {
 				for (host = 0; host < p->RIONumHosts; host++) {
 					if (p->RIOHosts[host].Flags == RC_RUNNING) {
@@ -183,26 +179,26 @@ int su;
 
 	case RIO_FOAD_RTA:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_FOAD_RTA\n");
-		return RIOCommandRta(p, (unsigned long)arg, RIOFoadRta);
+		return RIOCommandRta(p, arg, RIOFoadRta);
 
 	case RIO_ZOMBIE_RTA:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_ZOMBIE_RTA\n");
-		return RIOCommandRta(p, (unsigned long)arg, RIOZombieRta);
+		return RIOCommandRta(p, arg, RIOZombieRta);
 
 	case RIO_IDENTIFY_RTA:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_IDENTIFY_RTA\n");
-		return RIOIdentifyRta(p, arg);
+		return RIOIdentifyRta(p, argp);
 
 	case RIO_KILL_NEIGHBOUR:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_KILL_NEIGHBOUR\n");
-		return RIOKillNeighbour(p, arg);
+		return RIOKillNeighbour(p, argp);
 
 	case SPECIAL_RUP_CMD:
 		{
 			struct CmdBlk *CmdBlkP;
 
 			rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD\n");
-			if (copy_from_user(&SpecialRupCmd, arg, sizeof(SpecialRupCmd))) {
+			if (copy_from_user(&SpecialRupCmd, argp, sizeof(SpecialRupCmd))) {
 				rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD copy failed\n");
 				p->RIOError.Error = COPYIN_FAILED;
 				return -EFAULT;
@@ -239,7 +235,7 @@ int su;
 		if ((retval = RIOApel(p)) != 0)
 			return retval;
 
-		if (copy_to_user(arg, p->RIOConnectTable, TOTAL_MAP_ENTRIES * sizeof(struct Map))) {
+		if (copy_to_user(argp, p->RIOConnectTable, TOTAL_MAP_ENTRIES * sizeof(struct Map))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_TABLE copy failed\n");
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
@@ -284,7 +280,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_from_user(&p->RIOConnectTable[0], arg, TOTAL_MAP_ENTRIES * sizeof(struct Map))) {
+		if (copy_from_user(&p->RIOConnectTable[0], argp, TOTAL_MAP_ENTRIES * sizeof(struct Map))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_TABLE copy failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -330,7 +326,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_to_user(arg, p->RIOBindTab, (sizeof(ulong) * MAX_RTA_BINDINGS))) {
+		if (copy_to_user(argp, p->RIOBindTab, (sizeof(ulong) * MAX_RTA_BINDINGS))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_BINDINGS copy failed\n");
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
@@ -349,7 +345,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_from_user(&p->RIOBindTab[0], arg, (sizeof(ulong) * MAX_RTA_BINDINGS))) {
+		if (copy_from_user(&p->RIOBindTab[0], argp, (sizeof(ulong) * MAX_RTA_BINDINGS))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_BINDINGS copy failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -373,12 +369,12 @@ int su;
 			for (Entry = 0; Entry < MAX_RTA_BINDINGS; Entry++) {
 				if ((EmptySlot == -1) && (p->RIOBindTab[Entry] == 0L))
 					EmptySlot = Entry;
-				else if (p->RIOBindTab[Entry] == (long)arg) {
+				else if (p->RIOBindTab[Entry] == arg) {
 					/*
 					 ** Already exists - delete
 					 */
 					p->RIOBindTab[Entry] = 0L;
-					rio_dprintk(RIO_DEBUG_CTRL, "Removing Rta %ld from p->RIOBindTab\n", (unsigned long)arg);
+					rio_dprintk(RIO_DEBUG_CTRL, "Removing Rta %ld from p->RIOBindTab\n", arg);
 					return 0;
 				}
 			}
@@ -386,10 +382,10 @@ int su;
 			 ** Dosen't exist - add
 			 */
 			if (EmptySlot != -1) {
-				p->RIOBindTab[EmptySlot] = (unsigned long)arg;
-				rio_dprintk(RIO_DEBUG_CTRL, "Adding Rta %lx to p->RIOBindTab\n", (unsigned long) arg);
+				p->RIOBindTab[EmptySlot] = arg;
+				rio_dprintk(RIO_DEBUG_CTRL, "Adding Rta %lx to p->RIOBindTab\n", arg);
 			} else {
-				rio_dprintk(RIO_DEBUG_CTRL, "p->RIOBindTab full! - Rta %lx not added\n", (unsigned long) arg);
+				rio_dprintk(RIO_DEBUG_CTRL, "p->RIOBindTab full! - Rta %lx not added\n", arg);
 				return -ENOMEM;
 			}
 			return 0;
@@ -397,7 +393,7 @@ int su;
 
 	case RIO_RESUME:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME\n");
-		port = (unsigned long) arg;
+		port = arg;
 		if ((port < 0) || (port > 511)) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Bad port number %d\n", port);
 			p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE;
@@ -433,7 +429,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_from_user(&MapEnt, arg, sizeof(MapEnt))) {
+		if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "Copy from user space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -447,7 +443,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_from_user(&MapEnt, arg, sizeof(MapEnt))) {
+		if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "Copy from user space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -461,7 +457,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_from_user(&MapEnt, arg, sizeof(MapEnt))) {
+		if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "Copy from data space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -469,14 +465,14 @@ int su;
 		return RIODeleteRta(p, &MapEnt);
 
 	case RIO_QUICK_CHECK:
-		if (copy_to_user(arg, &p->RIORtaDisCons, sizeof(unsigned int))) {
+		if (copy_to_user(argp, &p->RIORtaDisCons, sizeof(unsigned int))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
 		return 0;
 
 	case RIO_LAST_ERROR:
-		if (copy_to_user(arg, &p->RIOError, sizeof(struct Error)))
+		if (copy_to_user(argp, &p->RIOError, sizeof(struct Error)))
 			return -EFAULT;
 		return 0;
 
@@ -485,7 +481,7 @@ int su;
 		return -EINVAL;
 
 	case RIO_GET_MODTYPE:
-		if (copy_from_user(&port, arg, sizeof(unsigned int))) {
+		if (copy_from_user(&port, argp, sizeof(unsigned int))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -505,7 +501,7 @@ int su;
 		 ** Return module type of port
 		 */
 		port = PortP->HostP->UnixRups[PortP->RupNum].ModTypes;
-		if (copy_to_user(arg, &port, sizeof(unsigned int))) {
+		if (copy_to_user(argp, &port, sizeof(unsigned int))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
@@ -521,7 +517,7 @@ int su;
 
 	case RIO_SETUP_PORTS:
 		rio_dprintk(RIO_DEBUG_CTRL, "Setup ports\n");
-		if (copy_from_user(&PortSetup, arg, sizeof(PortSetup))) {
+		if (copy_from_user(&PortSetup, argp, sizeof(PortSetup))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			rio_dprintk(RIO_DEBUG_CTRL, "EFAULT");
 			return -EFAULT;
@@ -551,7 +547,7 @@ int su;
 
 	case RIO_GET_PORT_SETUP:
 		rio_dprintk(RIO_DEBUG_CTRL, "Get port setup\n");
-		if (copy_from_user(&PortSetup, arg, sizeof(PortSetup))) {
+		if (copy_from_user(&PortSetup, argp, sizeof(PortSetup))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -572,7 +568,7 @@ int su;
 		PortSetup.XpOn[MAX_XP_CTRL_LEN - 1] = '\0';
 		PortSetup.XpOff[MAX_XP_CTRL_LEN - 1] = '\0';
 
-		if (copy_to_user(arg, &PortSetup, sizeof(PortSetup))) {
+		if (copy_to_user(argp, &PortSetup, sizeof(PortSetup))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
@@ -580,7 +576,7 @@ int su;
 
 	case RIO_GET_PORT_PARAMS:
 		rio_dprintk(RIO_DEBUG_CTRL, "Get port params\n");
-		if (copy_from_user(&PortParams, arg, sizeof(struct PortParams))) {
+		if (copy_from_user(&PortParams, argp, sizeof(struct PortParams))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -593,7 +589,7 @@ int su;
 		PortParams.State = PortP->State;
 		rio_dprintk(RIO_DEBUG_CTRL, "Port %d\n", PortParams.Port);
 
-		if (copy_to_user(arg, &PortParams, sizeof(struct PortParams))) {
+		if (copy_to_user(argp, &PortParams, sizeof(struct PortParams))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
@@ -601,7 +597,7 @@ int su;
 
 	case RIO_GET_PORT_TTY:
 		rio_dprintk(RIO_DEBUG_CTRL, "Get port tty\n");
-		if (copy_from_user(&PortTty, arg, sizeof(struct PortTty))) {
+		if (copy_from_user(&PortTty, argp, sizeof(struct PortTty))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -612,14 +608,14 @@ int su;
 
 		rio_dprintk(RIO_DEBUG_CTRL, "Port %d\n", PortTty.port);
 		PortP = (p->RIOPortp[PortTty.port]);
-		if (copy_to_user(arg, &PortTty, sizeof(struct PortTty))) {
+		if (copy_to_user(argp, &PortTty, sizeof(struct PortTty))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
 		return retval;
 
 	case RIO_SET_PORT_TTY:
-		if (copy_from_user(&PortTty, arg, sizeof(struct PortTty))) {
+		if (copy_from_user(&PortTty, argp, sizeof(struct PortTty))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -634,7 +630,7 @@ int su;
 
 	case RIO_SET_PORT_PARAMS:
 		rio_dprintk(RIO_DEBUG_CTRL, "Set port params\n");
-		if (copy_from_user(&PortParams, arg, sizeof(PortParams))) {
+		if (copy_from_user(&PortParams, argp, sizeof(PortParams))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -650,7 +646,7 @@ int su;
 
 	case RIO_GET_PORT_STATS:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_PORT_STATS\n");
-		if (copy_from_user(&portStats, arg, sizeof(struct portStats))) {
+		if (copy_from_user(&portStats, argp, sizeof(struct portStats))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -665,14 +661,14 @@ int su;
 		portStats.opens = PortP->opens;
 		portStats.closes = PortP->closes;
 		portStats.ioctls = PortP->ioctls;
-		if (copy_to_user(arg, &portStats, sizeof(struct portStats))) {
+		if (copy_to_user(argp, &portStats, sizeof(struct portStats))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
 		return retval;
 
 	case RIO_RESET_PORT_STATS:
-		port = (unsigned long) arg;
+		port = arg;
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESET_PORT_STATS\n");
 		if (port >= RIO_PORTS) {
 			p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE;
@@ -690,7 +686,7 @@ int su;
 
 	case RIO_GATHER_PORT_STATS:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_GATHER_PORT_STATS\n");
-		if (copy_from_user(&portStats, arg, sizeof(struct portStats))) {
+		if (copy_from_user(&portStats, argp, sizeof(struct portStats))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -706,7 +702,7 @@ int su;
 
 	case RIO_READ_CONFIG:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_CONFIG\n");
-		if (copy_to_user(arg, &p->RIOConf, sizeof(struct Conf))) {
+		if (copy_to_user(argp, &p->RIOConf, sizeof(struct Conf))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
@@ -718,7 +714,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_from_user(&p->RIOConf, arg, sizeof(struct Conf))) {
+		if (copy_from_user(&p->RIOConf, argp, sizeof(struct Conf))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -746,7 +742,7 @@ int su;
 	case RIO_SETDEBUG:
 	case RIO_GETDEBUG:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_SETDEBUG/RIO_GETDEBUG\n");
-		if (copy_from_user(&DebugCtrl, arg, sizeof(DebugCtrl))) {
+		if (copy_from_user(&DebugCtrl, argp, sizeof(DebugCtrl))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -763,7 +759,7 @@ int su;
 				rio_dprintk(RIO_DEBUG_CTRL, "Get global debug 0x%x wait 0x%x\n", p->rio_debug, p->RIODebugWait);
 				DebugCtrl.Debug = p->rio_debug;
 				DebugCtrl.Wait = p->RIODebugWait;
-				if (copy_to_user(arg, &DebugCtrl, sizeof(DebugCtrl))) {
+				if (copy_to_user(argp, &DebugCtrl, sizeof(DebugCtrl))) {
 					rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET/GET DEBUG: bad port number %d\n", DebugCtrl.SysPort);
 					p->RIOError.Error = COPYOUT_FAILED;
 					return -EFAULT;
@@ -785,7 +781,7 @@ int su;
 		} else {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_GETDEBUG 0x%x\n", p->RIOPortp[DebugCtrl.SysPort]->Debug);
 			DebugCtrl.Debug = p->RIOPortp[DebugCtrl.SysPort]->Debug;
-			if (copy_to_user(arg, &DebugCtrl, sizeof(DebugCtrl))) {
+			if (copy_to_user(argp, &DebugCtrl, sizeof(DebugCtrl))) {
 				rio_dprintk(RIO_DEBUG_CTRL, "RIO_GETDEBUG: Bad copy to user space\n");
 				p->RIOError.Error = COPYOUT_FAILED;
 				return -EFAULT;
@@ -800,7 +796,7 @@ int su;
 		 ** textual null terminated string.
 		 */
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_VERSID\n");
-		if (copy_to_user(arg, RIOVersid(), sizeof(struct rioVersion))) {
+		if (copy_to_user(argp, RIOVersid(), sizeof(struct rioVersion))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_VERSID: Bad copy to user space (host=%d)\n", Host);
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
@@ -813,7 +809,7 @@ int su;
 		 ** at init time.
 		 */
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_NUM_HOSTS\n");
-		if (copy_to_user(arg, &p->RIONumHosts, sizeof(p->RIONumHosts))) {
+		if (copy_to_user(argp, &p->RIONumHosts, sizeof(p->RIONumHosts))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_NUM_HOSTS: Bad copy to user space\n");
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
@@ -824,7 +820,7 @@ int su;
 		/*
 		 ** Kill host. This may not be in the final version...
 		 */
-		rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_FOAD %ld\n", (unsigned long) arg);
+		rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_FOAD %ld\n", arg);
 		if (!su) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_FOAD: Not super user\n");
 			p->RIOError.Error = NOT_SUPER_USER;
@@ -858,7 +854,7 @@ int su;
 			p->RIOError.Error = NOT_SUPER_USER;
 			return -EPERM;
 		}
-		if (copy_from_user(&DownLoad, arg, sizeof(DownLoad))) {
+		if (copy_from_user(&DownLoad, argp, sizeof(DownLoad))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Copy in from user space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -888,7 +884,7 @@ int su;
 		{
 			unsigned int host;
 
-			if (copy_from_user(&host, arg, sizeof(host))) {
+			if (copy_from_user(&host, argp, sizeof(host))) {
 				rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Copy in from user space failed\n");
 				p->RIOError.Error = COPYIN_FAILED;
 				return -EFAULT;
@@ -897,7 +893,7 @@ int su;
 			 ** Fetch the parmmap
 			 */
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_PARMS\n");
-			if (copy_to_user(arg, p->RIOHosts[host].ParmMapP, sizeof(PARM_MAP))) {
+			if (copy_to_user(argp, p->RIOHosts[host].ParmMapP, sizeof(PARM_MAP))) {
 				p->RIOError.Error = COPYOUT_FAILED;
 				rio_dprintk(RIO_DEBUG_CTRL, "RIO_PARMS: Copy out to user space failed\n");
 				return -EFAULT;
@@ -907,7 +903,7 @@ int su;
 
 	case RIO_HOST_REQ:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ\n");
-		if (copy_from_user(&HostReq, arg, sizeof(HostReq))) {
+		if (copy_from_user(&HostReq, argp, sizeof(HostReq))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Copy in from user space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -928,7 +924,7 @@ int su;
 
 	case RIO_HOST_DPRAM:
 		rio_dprintk(RIO_DEBUG_CTRL, "Request for DPRAM\n");
-		if (copy_from_user(&HostDpRam, arg, sizeof(HostDpRam))) {
+		if (copy_from_user(&HostDpRam, argp, sizeof(HostDpRam))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Copy in from user space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -945,7 +941,7 @@ int su;
 			/* It's hardware like this that really gets on my tits. */
 			static unsigned char copy[sizeof(struct DpRam)];
 			for (off = 0; off < sizeof(struct DpRam); off++)
-				copy[off] = readb(&p->RIOHosts[HostDpRam.HostNum].Caddr[off]);
+				copy[off] = readb(p->RIOHosts[HostDpRam.HostNum].Caddr + off);
 			if (copy_to_user(HostDpRam.DpRamP, copy, sizeof(struct DpRam))) {
 				p->RIOError.Error = COPYOUT_FAILED;
 				rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Bad copy to user space\n");
@@ -960,13 +956,13 @@ int su;
 
 	case RIO_SET_BUSY:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_BUSY\n");
-		if ((unsigned long) arg > 511) {
-			rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_BUSY: Bad port number %ld\n", (unsigned long) arg);
+		if (arg > 511) {
+			rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_BUSY: Bad port number %ld\n", arg);
 			p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE;
 			return -EINVAL;
 		}
 		rio_spin_lock_irqsave(&PortP->portSem, flags);
-		p->RIOPortp[(unsigned long) arg]->State |= RIO_BUSY;
+		p->RIOPortp[arg]->State |= RIO_BUSY;
 		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 		return retval;
 
@@ -976,7 +972,7 @@ int su;
 		 ** (probably for debug reasons)
 		 */
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT\n");
-		if (copy_from_user(&PortReq, arg, sizeof(PortReq))) {
+		if (copy_from_user(&PortReq, argp, sizeof(PortReq))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT: Copy in from user space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -1001,7 +997,7 @@ int su;
 		 ** (probably for debug reasons)
 		 */
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP\n");
-		if (copy_from_user(&RupReq, arg, sizeof(RupReq))) {
+		if (copy_from_user(&RupReq, argp, sizeof(RupReq))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Copy in from user space failed\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -1038,7 +1034,7 @@ int su;
 		 ** (probably for debug reasons)
 		 */
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB\n");
-		if (copy_from_user(&LpbReq, arg, sizeof(LpbReq))) {
+		if (copy_from_user(&LpbReq, argp, sizeof(LpbReq))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Bad copy from user space\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -1136,7 +1132,7 @@ int su;
 	case RIO_MAP_B110_TO_110:
 	case RIO_MAP_B110_TO_115200:
 		rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping\n");
-		port = (unsigned long) arg;
+		port = arg;
 		if (port < 0 || port > 511) {
 			rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping: Bad port number %d\n", port);
 			p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE;
@@ -1166,7 +1162,7 @@ int su;
 
 	case RIO_SEND_PACKET:
 		rio_dprintk(RIO_DEBUG_CTRL, "RIO_SEND_PACKET\n");
-		if (copy_from_user(&SendPack, arg, sizeof(SendPack))) {
+		if (copy_from_user(&SendPack, argp, sizeof(SendPack))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_SEND_PACKET: Bad copy from user space\n");
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
@@ -1210,7 +1206,7 @@ int su;
 		return su ? 0 : -EPERM;
 
 	case RIO_WHAT_MESG:
-		if (copy_to_user(arg, &p->RIONoMessage, sizeof(p->RIONoMessage))) {
+		if (copy_to_user(argp, &p->RIONoMessage, sizeof(p->RIONoMessage))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_WHAT_MESG: Bad copy to user space\n");
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
@@ -1218,7 +1214,7 @@ int su;
 		return 0;
 
 	case RIO_MEM_DUMP:
-		if (copy_from_user(&SubCmd, arg, sizeof(struct SubCmdStruct))) {
+		if (copy_from_user(&SubCmd, argp, sizeof(struct SubCmdStruct))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -1248,7 +1244,7 @@ int su;
 			PortP->State |= RIO_BUSY;
 
 		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
-		if (copy_to_user(arg, p->RIOMemDump, MEMDUMP_SIZE)) {
+		if (copy_to_user(argp, p->RIOMemDump, MEMDUMP_SIZE)) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP copy failed\n");
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
@@ -1256,30 +1252,30 @@ int su;
 		return 0;
 
 	case RIO_TICK:
-		if ((unsigned long) arg >= p->RIONumHosts)
+		if (arg >= p->RIONumHosts)
 			return -EINVAL;
-		rio_dprintk(RIO_DEBUG_CTRL, "Set interrupt for host %ld\n", (unsigned long) arg);
-		writeb(0xFF, &p->RIOHosts[(unsigned long) arg].SetInt);
+		rio_dprintk(RIO_DEBUG_CTRL, "Set interrupt for host %ld\n", arg);
+		writeb(0xFF, &p->RIOHosts[arg].SetInt);
 		return 0;
 
 	case RIO_TOCK:
-		if ((unsigned long) arg >= p->RIONumHosts)
+		if (arg >= p->RIONumHosts)
 			return -EINVAL;
-		rio_dprintk(RIO_DEBUG_CTRL, "Clear interrupt for host %ld\n", (unsigned long) arg);
-		writeb(0xFF, &p->RIOHosts[(unsigned long) arg].ResetInt);
+		rio_dprintk(RIO_DEBUG_CTRL, "Clear interrupt for host %ld\n", arg);
+		writeb(0xFF, &p->RIOHosts[arg].ResetInt);
 		return 0;
 
 	case RIO_READ_CHECK:
 		/* Check reads for pkts with data[0] the same */
 		p->RIOReadCheck = !p->RIOReadCheck;
-		if (copy_to_user(arg, &p->RIOReadCheck, sizeof(unsigned int))) {
+		if (copy_to_user(argp, &p->RIOReadCheck, sizeof(unsigned int))) {
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
 		}
 		return 0;
 
 	case RIO_READ_REGISTER:
-		if (copy_from_user(&SubCmd, arg, sizeof(struct SubCmdStruct))) {
+		if (copy_from_user(&SubCmd, argp, sizeof(struct SubCmdStruct))) {
 			p->RIOError.Error = COPYIN_FAILED;
 			return -EFAULT;
 		}
@@ -1314,7 +1310,7 @@ int su;
 			PortP->State |= RIO_BUSY;
 
 		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
-		if (copy_to_user(arg, &p->CdRegister, sizeof(unsigned int))) {
+		if (copy_to_user(argp, &p->CdRegister, sizeof(unsigned int))) {
 			rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER copy failed\n");
 			p->RIOError.Error = COPYOUT_FAILED;
 			return -EFAULT;
@@ -1327,10 +1323,10 @@ int su;
 		 */
 	case RIO_MAKE_DEV:
 		{
-			unsigned int port = (unsigned long) arg & RIO_MODEM_MASK;
+			unsigned int port = arg & RIO_MODEM_MASK;
 			unsigned int ret;
 
-			switch ((unsigned long) arg & RIO_DEV_MASK) {
+			switch (arg & RIO_DEV_MASK) {
 			case RIO_DEV_DIRECT:
 				ret = drv_makedev(MAJOR(dev), port);
 				rio_dprintk(RIO_DEBUG_CTRL, "Makedev direct 0x%x is 0x%x\n", port, ret);
@@ -1358,7 +1354,7 @@ int su;
 			int mino;
 			unsigned long ret;
 
-			dv = (dev_t) ((unsigned long) arg);
+			dv = (dev_t) (arg);
 			mino = RIO_UNMODEM(dv);
 
 			if (RIO_ISMODEM(dv)) {