ALSA: do not create OPL3 timers if there is no OPL3 irq wired

Most cards have OPL3 FM synthetiser but
they do not have OPL3 interrupt wired to
a sound chip or CPU.

Do not create OPL3 timers for such cards
as the timers are useless witthout interrupt.

This patch removes OPL3 timers for following
alsa drivers: snd-ad1816a, snd-opti93x,
snd-opti92x, snd-sc6000, snd-cmi8330.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 5 deletions

diff --git a/sound/isa/ad1816a/ad1816a.c b/sound/isa/ad1816a/ad1816a.c
index 77524244a846..3810833d3a87 100644
--- a/sound/isa/ad1816a/ad1816a.c
+++ b/sound/isa/ad1816a/ad1816a.c
@@ -207,11 +207,8 @@ static int __devinit snd_card_ad1816a_probe(int dev, struct pnp_card_link *pcard
                                     OPL3_HW_AUTO, 0, &opl3) < 0) {
                         printk(KERN_ERR PFX "no OPL device at 0x%lx-0x%lx.\n", fm_port[dev], fm_port[dev] + 2);
                 } else {
-                        if ((error = snd_opl3_timer_new(opl3, 1, 2)) < 0) {
-                                snd_card_free(card);
-                                return error;
-                        }
-                        if ((error = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
+                        error = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
+                        if (error < 0) {
                                 snd_card_free(card);
                                 return error;
                         }