[patch] v4l: saa7134 module

[Gerd Knorr]

- fix saa7134 module loading issues.

Signed-off-by: Gerd Knorr <[EMAIL PROTECTED]>
---
 drivers/media/video/saa7134/saa7134-core.c |   47 ++++++++++++++++++++-
 1 files changed, 45 insertions(+), 2 deletions(-)

Index: linux-2.6.10/drivers/media/video/saa7134/saa7134-core.c
===================================================================
--- linux-2.6.10.orig/drivers/media/video/saa7134/saa7134-core.c        
2005-01-10 12:40:58.613644368 +0100
+++ linux-2.6.10/drivers/media/video/saa7134/saa7134-core.c     2005-01-10 
12:40:59.759428971 +0100
@@ -222,6 +222,49 @@ static void dump_statusregs(struct saa71
 }
 #endif
 
+/* ----------------------------------------------------------- */
+/* delayed request_module                                      */
+
+static int need_empress;
+static int need_dvb;
+
+static int pending_call(struct notifier_block *self, unsigned long state,
+                       void *module)
+{
+       if (module != THIS_MODULE || state != MODULE_STATE_LIVE)
+               return NOTIFY_DONE;
+
+        if (need_empress)
+                request_module("saa7134-empress");
+        if (need_dvb)
+                request_module("saa7134-dvb");
+       return NOTIFY_DONE;
+}
+
+static int pending_registered;
+static struct notifier_block pending_notifier = {
+       .notifier_call = pending_call,
+};
+
+static void request_module_depend(char *name, int *flag)
+{
+       switch (THIS_MODULE->state) {
+       case MODULE_STATE_COMING:
+               if (!pending_registered) {
+                       register_module_notifier(&pending_notifier);
+                       pending_registered = 1;
+               }
+               *flag = 1;
+               break;
+       case MODULE_STATE_LIVE:
+               request_module(name);
+               break;
+       default:
+               /* nothing */;
+               break;
+       }
+}
+
 /* ------------------------------------------------------------------ */
 
 /* nr of (saa7134-)pages for the given buffer size */
@@ -941,11 +984,11 @@ static int __devinit saa7134_initdev(str
        if (dev->tda9887_conf)
                request_module("tda9887");
        if (card_is_empress(dev)) {
-               request_module("saa7134-empress");
                request_module("saa6752hs");
+               request_module_depend("saa7134-empress",&need_empress);
        }
        if (card_is_dvb(dev))
-               request_module("saa7134-dvb");
+               request_module_depend("saa7134-dvb",&need_dvb);
 
        v4l2_prio_init(&dev->prio);
 

-- 
#define printk(args...) fprintf(stderr, ## args)
-
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