diff options
authorTakashi Iwai <>2013-08-27 12:03:01 +0200
committerGreg Kroah-Hartman <>2013-09-07 22:09:57 -0700
commitc990ab45cb4fda0767b196f4303372bdad4f9f7a (patch)
parent35133cc34699a77d66a26f6a115b275a38868127 (diff)
ALSA: opti9xx: Fix conflicting driver object name
commit fb615499f0ad28ed74201c1cdfddf9e64e205424 upstream. The recent commit to delay the release of kobject triggered NULL dereferences of opti9xx drivers. The cause is that all snd-opti92x-ad1848, snd-opti92x-cs4231 and snd-opti93x drivers register the PnP card driver with the very same name, and also snd-opti92x-ad1848 and -cs4231 drivers register the ISA driver with the same name, too. When these drivers are built in, quick "register-release-and-re-register" actions occur, and this results in Oops because of the same name is assigned to the kobject. The fix is simply to assign individual names. As a bonus, by using KBUILD_MODNAME, the patch reduces more lines than it adds. The fix is based on the suggestion by Russell King. Reported-and-tested-by: Fengguang Wu <> Signed-off-by: Takashi Iwai <> Signed-off-by: Greg Kroah-Hartman <>
1 files changed, 2 insertions, 6 deletions
diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index b41ed8661b23..e427dbf76368 100644
--- a/sound/isa/opti9xx/opti92x-ad1848.c
+++ b/sound/isa/opti9xx/opti92x-ad1848.c
@@ -173,11 +173,7 @@ MODULE_DEVICE_TABLE(pnp_card, snd_opti9xx_pnpids);
#endif /* CONFIG_PNP */
-#ifdef OPTi93X
-#define DEV_NAME "opti93x"
-#define DEV_NAME "opti92x"
static char * snd_opti9xx_names[] = {
@@ -1168,7 +1164,7 @@ static int snd_opti9xx_pnp_resume(struct pnp_card_link *pcard)
static struct pnp_card_driver opti9xx_pnpc_driver = {
- .name = "opti9xx",
+ .name = DEV_NAME,
.id_table = snd_opti9xx_pnpids,
.probe = snd_opti9xx_pnp_probe,
.remove = snd_opti9xx_pnp_remove,