[ALSA] Fix probe of non-PnP ISA devices
isa_register_driver() returns an error if no device is found
and it's no fatal error for the drivers with pnp support.
Signed-off-by: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/isa/sb/sb16.c b/sound/isa/sb/sb16.c
index 2a19b0a..c4ba24b 100644
--- a/sound/isa/sb/sb16.c
+++ b/sound/isa/sb/sb16.c
@@ -129,6 +129,7 @@
#endif
#ifdef CONFIG_PNP
+static int isa_registered;
static int pnp_registered;
#endif
@@ -702,15 +703,18 @@
int err;
err = isa_register_driver(&snd_sb16_isa_driver, SNDRV_CARDS);
- if (err < 0)
- return err;
#ifdef CONFIG_PNP
- /* PnP cards at last */
+ if (!err)
+ isa_registered = 1;
+
err = pnp_register_card_driver(&sb16_pnpc_driver);
if (!err)
pnp_registered = 1;
+
+ if (isa_registered)
+ err = 0;
#endif
- return 0;
+ return err;
}
static void __exit alsa_card_sb16_exit(void)
@@ -718,8 +722,9 @@
#ifdef CONFIG_PNP
if (pnp_registered)
pnp_unregister_card_driver(&sb16_pnpc_driver);
+ if (isa_registered)
#endif
- isa_unregister_driver(&snd_sb16_isa_driver);
+ isa_unregister_driver(&snd_sb16_isa_driver);
}
module_init(alsa_card_sb16_init)