[PATCH] generic HDLC synclink config mismatch fix

Fix compile errors on mismatch between generic HDLC and synclink drivers.

Notes:

generic HDLC support for synclink drivers is *optional* so you can't just
use depend on in Kconfig

This solution is deemed the best after 7 months of review and criticism by
many developers including AKPM.  Read the threads on LKML before posting
about this solution.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 14 insertions, 12 deletions

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 1bd1229..74d21c1 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -75,8 +75,10 @@
 #include <pcmcia/cisreg.h>
 #include <pcmcia/ds.h>
 
-#ifdef CONFIG_HDLC_MODULE
-#define CONFIG_HDLC 1
+#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_CS_MODULE))
+#define SYNCLINK_GENERIC_HDLC 1
+#else
+#define SYNCLINK_GENERIC_HDLC 0
 #endif
 
 #define GET_USER(error,value,addr) error = get_user(value,addr)
@@ -235,7 +237,7 @@ typedef struct _mgslpc_info {
 	int dosyncppp;
 	spinlock_t netlock;
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 	struct net_device *netdev;
 #endif
 
@@ -392,7 +394,7 @@ static void tx_timeout(unsigned long context);
 
 static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg);
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 #define dev_to_port(D) (dev_to_hdlc(D)->priv)
 static void hdlcdev_tx_done(MGSLPC_INFO *info);
 static void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size);
@@ -1053,7 +1055,7 @@ static void tx_done(MGSLPC_INFO *info)
 		info->drop_rts_on_tx_done = 0;
 	}
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 	if (info->netcount)
 		hdlcdev_tx_done(info);
 	else 
@@ -1164,7 +1166,7 @@ static void dcd_change(MGSLPC_INFO *info)
 	}
 	else
 		info->input_signal_events.dcd_down++;
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 	if (info->netcount) {
 		if (info->serial_signals & SerialSignal_DCD)
 			netif_carrier_on(info->netdev);
@@ -2953,7 +2955,7 @@ static void mgslpc_add_device(MGSLPC_INFO *info)
 	printk( "SyncLink PC Card %s:IO=%04X IRQ=%d\n",
 		info->device_name, info->io_base, info->irq_level);
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 	hdlcdev_init(info);
 #endif
 }
@@ -2969,7 +2971,7 @@ static void mgslpc_remove_device(MGSLPC_INFO *remove_info)
 				last->next_device = info->next_device;
 			else
 				mgslpc_device_list = info->next_device;
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 			hdlcdev_exit(info);
 #endif
 			release_resources(info);
@@ -3901,7 +3903,7 @@ static int rx_get_frame(MGSLPC_INFO *info)
 				return_frame = 1;
 		}
 		framesize = 0;
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 		{
 			struct net_device_stats *stats = hdlc_stats(info->netdev);
 			stats->rx_errors++;
@@ -3935,7 +3937,7 @@ static int rx_get_frame(MGSLPC_INFO *info)
 				++framesize;
 			}
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 			if (info->netcount)
 				hdlcdev_rx(info, buf->data, framesize);
 			else
@@ -4091,7 +4093,7 @@ static void tx_timeout(unsigned long context)
 
 	spin_unlock_irqrestore(&info->lock,flags);
 	
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 	if (info->netcount)
 		hdlcdev_tx_done(info);
 	else
@@ -4099,7 +4101,7 @@ static void tx_timeout(unsigned long context)
 		bh_transmit(info);
 }
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 
 /**
  * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.)