[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/synclinkmp.c b/drivers/char/synclinkmp.c
index 13a57245cf2e..20a96ef250be 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -67,8 +67,10 @@
 #include <linux/workqueue.h>
 #include <linux/hdlc.h>
 
-#ifdef CONFIG_HDLC_MODULE
-#define CONFIG_HDLC 1
+#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINKMP_MODULE))
+#define SYNCLINK_GENERIC_HDLC 1
+#else
+#define SYNCLINK_GENERIC_HDLC 0
 #endif
 
 #define GET_USER(error,value,addr) error = get_user(value,addr)
@@ -280,7 +282,7 @@ typedef struct _synclinkmp_info {
         int dosyncppp;
         spinlock_t netlock;
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
         struct net_device *netdev;
 #endif
 
@@ -536,7 +538,7 @@ static void throttle(struct tty_struct * tty);
 static void unthrottle(struct tty_struct * tty);
 static void set_break(struct tty_struct *tty, int break_state);
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 #define dev_to_port(D) (dev_to_hdlc(D)->priv)
 static void hdlcdev_tx_done(SLMP_INFO *info);
 static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size);
@@ -1607,7 +1609,7 @@ static void set_break(struct tty_struct *tty, int break_state)
         spin_unlock_irqrestore(&info->lock,flags);
 }
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
 
 /**
  * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.)
@@ -2339,7 +2341,7 @@ static void isr_txeom(SLMP_INFO * info, unsigned char status)
                         set_signals(info);
                 }
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
                 if (info->netcount)
                         hdlcdev_tx_done(info);
                 else
@@ -2523,7 +2525,7 @@ void isr_io_pin( SLMP_INFO *info, u16 status )
                                 info->input_signal_events.dcd_up++;
                         } else
                                 info->input_signal_events.dcd_down++;
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
                         if (info->netcount) {
                                 if (status & SerialSignal_DCD)
                                         netif_carrier_on(info->netdev);
@@ -3783,7 +3785,7 @@ void add_device(SLMP_INFO *info)
                 info->irq_level,
                 info->max_frame_size );
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
         hdlcdev_init(info);
 #endif
 }
@@ -3977,7 +3979,7 @@ static void synclinkmp_cleanup(void)
         /* release devices */
         info = synclinkmp_device_list;
         while(info) {
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
                 hdlcdev_exit(info);
 #endif
                 free_dma_bufs(info);
@@ -4979,7 +4981,7 @@ CheckAgain:
                         info->icount.rxcrc++;
 
                 framesize = 0;
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
                 {
                         struct net_device_stats *stats = hdlc_stats(info->netdev);
                         stats->rx_errors++;
@@ -5020,7 +5022,7 @@ CheckAgain:
                                         index = 0;
                         }
 
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
                         if (info->netcount)
                                 hdlcdev_rx(info,info->tmp_rx_buf,framesize);
                         else
@@ -5531,7 +5533,7 @@ 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