[PATCH] PNP: adjust pnp_register_card_driver() signature: sb_card

Remove the assumption that pnp_register_card_driver() returns the
number of devices claimed.  And fix some __init/__devinit issues.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Jaroslav Kysela <perex@suse.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/sound/oss/sb_card.c b/sound/oss/sb_card.c
index 680b82e..d38e88a 100644 (file)
--- a/sound/oss/sb_card.c
+++ b/sound/oss/sb_card.c
@@ -52,6 +52,7 @@ static int __initdata sm_games        = 0; /* Logitech soundman games? */
 static struct sb_card_config *legacy = NULL;
 
 #ifdef CONFIG_PNP
+static int pnp_registered;
 static int __initdata pnp       = 1;
 /*
 static int __initdata uart401  = 0;
@@ -133,7 +134,7 @@ static void sb_unload(struct sb_card_config *scc)
 }
 
 /* Register legacy card with OSS subsystem */
-static int sb_init_legacy(void)
+static int __init sb_init_legacy(void)
 {
        struct sb_module_options sbmo = {0};
 
@@ -234,6 +235,8 @@ static void sb_dev2cfg(struct pnp_dev *dev, struct sb_card_config *scc)
        }
 }
 
+static unsigned int sb_pnp_devices;
+
 /* Probe callback function for the PnP API */
 static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device_id *card_id)
 {
@@ -264,6 +267,7 @@ static int sb_pnp_probe(struct pnp_card_link *card, const struct pnp_card_device
               scc->conf.dma, scc->conf.dma2);
 
        pnp_set_card_drvdata(card, scc);
+       sb_pnp_devices++;
 
        return sb_register_oss(scc, &sbmo);
 }
@@ -289,6 +293,14 @@ static struct pnp_card_driver sb_pnp_driver = {
 MODULE_DEVICE_TABLE(pnp_card, sb_pnp_card_table);
 #endif /* CONFIG_PNP */
 
+static void __init_or_module sb_unregister_all(void)
+{
+#ifdef CONFIG_PNP
+       if (pnp_registered)
+               pnp_unregister_card_driver(&sb_pnp_driver);
+#endif
+}
+
 static int __init sb_init(void)
 {
        int lres = 0;
@@ -307,17 +319,18 @@ static int __init sb_init(void)
 
 #ifdef CONFIG_PNP
        if(pnp) {
-               pres = pnp_register_card_driver(&sb_pnp_driver);
+               int err = pnp_register_card_driver(&sb_pnp_driver);
+               if (!err)
+                       pnp_registered = 1;
+               pres = sb_pnp_devices;
        }
 #endif
        printk(KERN_INFO "sb: Init: Done\n");
 
        /* If either PnP or Legacy registered a card then return
         * success */
-       if (pres <= 0 && lres <= 0) {
-#ifdef CONFIG_PNP
-               pnp_unregister_card_driver(&sb_pnp_driver);
-#endif
+       if (pres == 0 && lres <= 0) {
+               sb_unregister_all();
                return -ENODEV;
        }
        return 0;
@@ -333,9 +346,7 @@ static void __exit sb_exit(void)
                sb_unload(legacy);
        }
 
-#ifdef CONFIG_PNP
-       pnp_unregister_card_driver(&sb_pnp_driver);
-#endif
+       sb_unregister_all();
 
        if (smw_free) {
                vfree(smw_free);