[ALSA] Add snd_card_set_generic_dev() call

ARM,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,MIPS
MIPS AU1x00 driver,PPC,PPC PowerMac driver,SPARC,SPARC AMD7930 driver
SPARC cs4231 driver,SPARC DBRI driver
- Added snd_card_set_generic_dev() call.
- Added SND_GENERIC_DRIVER to Kconfig.
- Clean up the error path in probe if necessary.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/drivers/serial-u16550.c b/sound/drivers/serial-u16550.c
index 986df35..fd3bb9d 100644
--- a/sound/drivers/serial-u16550.c
+++ b/sound/drivers/serial-u16550.c
@@ -928,15 +928,11 @@
 					base[dev],
 					adaptor[dev],
 					droponfull[dev],
-					&uart)) < 0) {
-		snd_card_free(card);
-		return err;
-	}
+					&uart)) < 0)
+		goto _err;
 
-	if ((err = snd_uart16550_rmidi(uart, 0, outs[dev], ins[dev], &uart->rmidi)) < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if ((err = snd_uart16550_rmidi(uart, 0, outs[dev], ins[dev], &uart->rmidi)) < 0)
+		goto _err;
 
 	sprintf(card->longname, "%s at 0x%lx, irq %d speed %d div %d outs %d ins %d adaptor %s droponfull %d",
 		card->shortname,
@@ -949,12 +945,18 @@
 		adaptor_names[uart->adaptor],
 		uart->drop_on_full);
 
-	if ((err = snd_card_register(card)) < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	if ((err = snd_card_set_generic_dev(card)) < 0)
+		goto _err;
+
+	if ((err = snd_card_register(card)) < 0)
+		goto _err;
+
 	snd_serial_cards[dev] = card;
 	return 0;
+
+ _err:
+	snd_card_free(card);
+	return err;
 }
 
 static int __init alsa_card_serial_init(void)