fix up some compiler warnings when building for 2.4 kernels

git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.2@2188 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 9 insertions, 3 deletions

diff --git a/zaptel-base.c b/zaptel-base.c
index 1391335..7108a9d 100644
--- a/zaptel-base.c
+++ b/zaptel-base.c
@@ -2340,26 +2340,30 @@ static void zt_free_pseudo(struct zt_chan *pseudo)
 static int zt_open(struct inode *inode, struct file *file)
 {
 	int unit = UNIT(file);
-	int ret = -ENXIO;
 	struct zt_chan *chan;
+
 	/* Minor 0: Special "control" descriptor */
 	if (!unit) 
 		return zt_ctl_open(inode, file);
+
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
 	if (unit == 250) {
 		if (!zt_transcode_fops)
 			request_module("zttranscode");
 		if (zt_transcode_fops && zt_transcode_fops->open) {
 			if (try_module_get(zt_transcode_fops->owner)) {
+				int ret;
+
 				ret = zt_transcode_fops->open(inode, file);
 				if (ret)
 					module_put(zt_transcode_fops->owner);
+				return ret;
 			}
-			return ret;
 		}
 		return -ENXIO;
 	}
 #endif
+
 	if (unit == 253) {
 		if (maxspans) {
 			return zt_timing_open(inode, file);
@@ -6166,11 +6170,13 @@ zt_chan_poll(struct file *file, struct poll_table_struct *wait_table, int unit)
 
 static int zt_mmap(struct file *file, struct vm_area_struct *vm)
 {
-	int unit = UNIT(file);
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+	int unit = UNIT(file);
+
 	if (unit == 250)
 		return zt_transcode_fops->mmap(file, vm);
 #endif
+
 	return -ENOSYS;
 }