build XPP on the kernels that Xorcom says are OK to build on

update workqueue usage to conform to kernel 2.6.20 API


git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.2@2110 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 15 insertions, 6 deletions

diff --git a/xpp/xbus-core.c b/xpp/xbus-core.c
index d39c10c..ca14b38 100644
--- a/xpp/xbus-core.c
+++ b/xpp/xbus-core.c
@@ -72,7 +72,6 @@ DEF_PARM(uint, poll_timeout, POLL_TIMEOUT,"Timeout (in jiffies) waiting for unit
 static DEVICE_ATTR_FUNC(connector_show, dev, buf);
 static DEVICE_ATTR_FUNC(status_show, dev, buf);
 
-static int xbus_poll(void *data);
 static void xbus_release(struct device *dev);
 static int xbus_read_proc(char *page, char **start, off_t off, int count, int *eof, void *data);
 static int xbus_read_waitfor_xpds(char *page, char **start, off_t off, int count, int *eof, void *data);
@@ -429,8 +428,16 @@ out:
  * it returns only when all XPD's on the bus are detected and
  * initialized.
  */
-static int xbus_poll(void *data)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+static void xbus_poll(struct work_struct *work)
 {
+	xbus_t			*xbus = container_of(work, xbus_t, xpds_init_work);
+#else
+static void xbus_poll(void *data)
+{
+	xbus_t			*xbus = data;
+#endif
+
 	int			id;
 	int			ret = 0;
 	unsigned long		flags;
@@ -440,11 +447,10 @@ static int xbus_poll(void *data)
 	struct list_head	additions_list;
 	int			count_removed;
 	int			count_added;
-	xbus_t			*xbus = data;
 
 	if(!down_read_trylock(&xbus->in_use)) {
 		ERR("%s is being removed...\n", xbus->busname);
-		return -EBUSY;
+		return;
 	}
 	msleep(2);	/* roundtrip for older polls */
 	spin_lock_irqsave(&xbus->lock, flags);
@@ -543,7 +549,6 @@ static int xbus_poll(void *data)
 	wake_up(&xbus->wait_for_xpd_initialization);
 out:
 	up_read(&xbus->in_use);
-	return ret;
 }
 
 
@@ -560,7 +565,11 @@ void xbus_activate(xbus_t *xbus)
 	xbus->hardware_exists = 1;
 	DBG("Activating: %s\n", xbus->busname);
 	/* Poll it */
-	INIT_WORK(&xbus->xpds_init_work, (void (*)(void *))xbus_poll, (void *)xbus);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+	INIT_WORK(&xbus->xpds_init_work, xbus_poll);
+#else
+	INIT_WORK(&xbus->xpds_init_work, xbus_poll, xbus);
+#endif
 	if(!queue_work(xpp_worker, &xbus->xpds_init_work)) {
 		ERR("Failed to queue xpd initialization work\n");
 		/* FIXME: need to return error */