serial: Tidy REMOTE_DEBUG

REMOTE_DEBUG does already appear in 2.2 kernel sources but didn't
appear as a config Option in the initial git import 2.6.12-rc. It's
currently just used in one single place of the linux kernel and should
probably be dropped totally
Signed-off-by: NChristoph Egger <siccegge@cs.fau.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/char/serial167.c

@@ -176,23 +176,6 @@ static void config_setup(struct cyclades_port *);
 static void show_status(int);
 #endif
 
-#ifdef CONFIG_REMOTE_DEBUG
-static void debug_setup(void);
-void queueDebugChar(int c);
-int getDebugChar(void);
-
-#define DEBUG_PORT	1
-#define DEBUG_LEN	256
-
-typedef struct {
-	int in;
-	int out;
-	unsigned char buf[DEBUG_LEN];
-} debugq;
-
-debugq debugiq;
-#endif
-
 /*
  * I have my own version of udelay(), as it is needed when initialising
  * the chip, before the delay loop has been calibrated.  Should probably
@@ -515,11 +498,6 @@ static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id)
 	/* determine the channel and change to that context */
 	channel = (u_short) (base_addr[CyLICR] >> 2);
 
-#ifdef CONFIG_REMOTE_DEBUG
-	if (channel == DEBUG_PORT) {
-		panic("TxInt on debug port!!!");
-	}
-#endif
 	/* validate the port number (as configured and open) */
 	if ((channel < 0) || (NR_PORTS <= channel)) {
 		base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
@@ -634,14 +612,6 @@ static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id)
 	info->last_active = jiffies;
 	save_cnt = char_count = base_addr[CyRFOC];
 
-#ifdef CONFIG_REMOTE_DEBUG
-	if (channel == DEBUG_PORT) {
-		while (char_count--) {
-			data = base_addr[CyRDR];
-			queueDebugChar(data);
-		}
-	} else
-#endif
 		/* if there is nowhere to put the data, discard it */
 	if (info->tty == 0) {
 		while (char_count--) {
@@ -2195,9 +2165,7 @@ static int __init serial167_init(void)
 		port_num++;
 		info++;
 	}
-#ifdef CONFIG_REMOTE_DEBUG
-	debug_setup();
-#endif
+
 	ret = request_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt, 0,
 			  "cd2401_errors", cd2401_rxerr_interrupt);
 	if (ret) {
@@ -2518,193 +2486,4 @@ static int __init serial167_console_init(void)
 
 console_initcall(serial167_console_init);
 
-#ifdef CONFIG_REMOTE_DEBUG
-void putDebugChar(int c)
-{
-	volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
-	unsigned long flags;
-	volatile u_char sink;
-	u_char ier;
-	int port;
-
-	local_irq_save(flags);
-
-	/* Ensure transmitter is enabled! */
-
-	port = DEBUG_PORT;
-	base_addr[CyCAR] = (u_char) port;
-	while (base_addr[CyCCR])
-		;
-	base_addr[CyCCR] = CyENB_XMTR;
-
-	ier = base_addr[CyIER];
-	base_addr[CyIER] = CyTxMpty;
-
-	while (1) {
-		if (pcc2chip[PccSCCTICR] & 0x20) {
-			/* We have a Tx int. Acknowledge it */
-			sink = pcc2chip[PccTPIACKR];
-			if ((base_addr[CyLICR] >> 2) == port) {
-				base_addr[CyTDR] = c;
-				base_addr[CyTEOIR] = 0;
-				break;
-			} else
-				base_addr[CyTEOIR] = CyNOTRANS;
-		}
-	}
-
-	base_addr[CyIER] = ier;
-
-	local_irq_restore(flags);
-}
-
-int getDebugChar()
-{
-	volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
-	unsigned long flags;
-	volatile u_char sink;
-	u_char ier;
-	int port;
-	int i, c;
-
-	i = debugiq.out;
-	if (i != debugiq.in) {
-		c = debugiq.buf[i];
-		if (++i == DEBUG_LEN)
-			i = 0;
-		debugiq.out = i;
-		return c;
-	}
-	/* OK, nothing in queue, wait in poll loop */
-
-	local_irq_save(flags);
-
-	/* Ensure receiver is enabled! */
-
-	port = DEBUG_PORT;
-	base_addr[CyCAR] = (u_char) port;
-#if 0
-	while (base_addr[CyCCR])
-		;
-	base_addr[CyCCR] = CyENB_RCVR;
-#endif
-	ier = base_addr[CyIER];
-	base_addr[CyIER] = CyRxData;
-
-	while (1) {
-		if (pcc2chip[PccSCCRICR] & 0x20) {
-			/* We have a Rx int. Acknowledge it */
-			sink = pcc2chip[PccRPIACKR];
-			if ((base_addr[CyLICR] >> 2) == port) {
-				int cnt = base_addr[CyRFOC];
-				while (cnt-- > 0) {
-					c = base_addr[CyRDR];
-					if (c == 0)
-						printk
-						    ("!! debug char is null (cnt=%d) !!",
-						     cnt);
-					else
-						queueDebugChar(c);
-				}
-				base_addr[CyREOIR] = 0;
-				i = debugiq.out;
-				if (i == debugiq.in)
-					panic("Debug input queue empty!");
-				c = debugiq.buf[i];
-				if (++i == DEBUG_LEN)
-					i = 0;
-				debugiq.out = i;
-				break;
-			} else
-				base_addr[CyREOIR] = CyNOTRANS;
-		}
-	}
-
-	base_addr[CyIER] = ier;
-
-	local_irq_restore(flags);
-
-	return (c);
-}
-
-void queueDebugChar(int c)
-{
-	int i;
-
-	i = debugiq.in;
-	debugiq.buf[i] = c;
-	if (++i == DEBUG_LEN)
-		i = 0;
-	if (i != debugiq.out)
-		debugiq.in = i;
-}
-
-static void debug_setup()
-{
-	unsigned long flags;
-	volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
-	int i, cflag;
-
-	cflag = B19200;
-
-	local_irq_save(flags);
-
-	for (i = 0; i < 4; i++) {
-		base_addr[CyCAR] = i;
-		base_addr[CyLICR] = i << 2;
-	}
-
-	debugiq.in = debugiq.out = 0;
-
-	base_addr[CyCAR] = DEBUG_PORT;
-
-	/* baud rate */
-	i = cflag & CBAUD;
-
-	base_addr[CyIER] = 0;
-
-	base_addr[CyCMR] = CyASYNC;
-	base_addr[CyLICR] = DEBUG_PORT << 2;
-	base_addr[CyLIVR] = 0x5c;
-
-	/* tx and rx baud rate */
-
-	base_addr[CyTCOR] = baud_co[i];
-	base_addr[CyTBPR] = baud_bpr[i];
-	base_addr[CyRCOR] = baud_co[i] >> 5;
-	base_addr[CyRBPR] = baud_bpr[i];
-
-	/* set line characteristics  according configuration */
-
-	base_addr[CySCHR1] = 0;
-	base_addr[CySCHR2] = 0;
-	base_addr[CySCRL] = 0;
-	base_addr[CySCRH] = 0;
-	base_addr[CyCOR1] = Cy_8_BITS | CyPARITY_NONE;
-	base_addr[CyCOR2] = 0;
-	base_addr[CyCOR3] = Cy_1_STOP;
-	base_addr[CyCOR4] = baud_cor4[i];
-	base_addr[CyCOR5] = 0;
-	base_addr[CyCOR6] = 0;
-	base_addr[CyCOR7] = 0;
-
-	write_cy_cmd(base_addr, CyINIT_CHAN);
-	write_cy_cmd(base_addr, CyENB_RCVR);
-
-	base_addr[CyCAR] = DEBUG_PORT;	/* !!! Is this needed? */
-
-	base_addr[CyRTPRL] = 2;
-	base_addr[CyRTPRH] = 0;
-
-	base_addr[CyMSVR1] = CyRTS;
-	base_addr[CyMSVR2] = CyDTR;
-
-	base_addr[CyIER] = CyRxData;
-
-	local_irq_restore(flags);
-
-}				/* debug_setup */
-
-#endif
-
 MODULE_LICENSE("GPL");