[PATCH] gdth: cleanup compat clutter

This patch

- removes support for 2.2.x and 2.4.x without the full dma API
  (<= 2.4.13 or 2.4.9rh)
- makes sure we don't acquire or release unessecary locks around
  ->scsi_done - it's a small BH/softirq that doesn't care about
  the callers lock state
- cleans up the 2.4 vs 2.6 compat code a little
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/gdth_kcompat.h

+
+
+#ifndef IRQ_HANDLED
+typedef void irqreturn_t;
+#define IRQ_NONE
+#define IRQ_HANDLED
+#endif
+
+#ifndef MODULE_LICENSE
+#define MODULE_LICENSE(x)
+#endif
+
+#ifndef SERVICE_ACTION_IN
+#define SERVICE_ACTION_IN	0x9e
+#endif
+#ifndef READ_16
+#define READ_16			0x88
+#endif
+#ifndef WRITE_16
+#define WRITE_16		0x8a
+#endif

drivers/scsi/gdth_proc.h

@@ -14,14 +14,10 @@ static int gdth_get_info(char *buffer,char **start,off_t offset,int length,
 static void gdth_do_req(Scsi_Request *srp, gdth_cmd_str *cmd, 
                         char *cmnd, int timeout);
 static int gdth_set_asc_info(char *buffer,int length,int hanum,Scsi_Request *scp);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+#else
 static void gdth_do_cmd(Scsi_Cmnd *scp, gdth_cmd_str *cmd, 
                         char *cmnd, int timeout);
 static int gdth_set_asc_info(char *buffer,int length,int hanum,Scsi_Cmnd *scp);
-#else 
-static void gdth_do_cmd(Scsi_Cmnd *scp, gdth_cmd_str *cmd, 
-                        char *cmnd, int timeout);
-static int gdth_set_asc_info(char *buffer,int length,int hanum,Scsi_Cmnd scp);
 #endif
 
 static char *gdth_ioctl_alloc(int hanum, int size, int scratch,