[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/wavefront/wavefront.c b/sound/isa/wavefront/wavefront.c
index 75673f7..83c2fc4 100644
--- a/sound/isa/wavefront/wavefront.c
+++ b/sound/isa/wavefront/wavefront.c
@@ -86,6 +86,7 @@
MODULE_PARM_DESC(use_cs4232_midi, "Use CS4232 MPU-401 interface (inaccessibly located inside your computer)");
#ifdef CONFIG_PNP
+static int isa_registered;
static int pnp_registered;
static struct pnp_card_device_id snd_wavefront_pnpids[] = {
@@ -706,14 +707,18 @@
int err;
err = isa_register_driver(&snd_wavefront_driver, SNDRV_CARDS);
- if (err < 0)
- return err;
#ifdef CONFIG_PNP
+ if (!err)
+ isa_registered = 1;
+
err = pnp_register_card_driver(&wavefront_pnpc_driver);
if (!err)
pnp_registered = 1;
+
+ if (isa_registered)
+ err = 0;
#endif
- return 0;
+ return err;
}
static void __exit alsa_card_wavefront_exit(void)
@@ -721,8 +726,9 @@
#ifdef CONFIG_PNP
if (pnp_registered)
pnp_unregister_card_driver(&wavefront_pnpc_driver);
+ if (isa_registered)
#endif
- isa_unregister_driver(&snd_wavefront_driver);
+ isa_unregister_driver(&snd_wavefront_driver);
}
module_init(alsa_card_wavefront_init)