sane irq initialization in sedlbauer hisax

The interrupts schould be disabled until the driver
is ready and the IRQ function was registered.

Thanks to Bastian Friedrich  and Thomas Voegtle for spotting this.
Signed-off-by: NKarsten Keil <kkeil@suse.de>
Signed-off-by: NBastian Friedrich <bastian@bastian-friedrich.de>
Signed-off-by: NThomas Voegtle <tv@lio96.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/isdn/hisax/sedlbauer.c

@@ -451,6 +451,9 @@ Sedl_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 			spin_unlock_irqrestore(&cs->lock, flags);
 			return(0);
 		case CARD_RELEASE:
+			if (cs->hw.sedl.bus == SEDL_BUS_PCI)
+				/* disable all IRQ */
+				byteout(cs->hw.sedl.cfg_reg+ 5, 0);
 			if (cs->hw.sedl.chip == SEDL_CHIP_ISAC_ISAR) {
 				spin_lock_irqsave(&cs->lock, flags);
 				writereg(cs->hw.sedl.adr, cs->hw.sedl.hscx,
@@ -468,6 +471,9 @@ Sedl_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 			return(0);
 		case CARD_INIT:
 			spin_lock_irqsave(&cs->lock, flags);
+			if (cs->hw.sedl.bus == SEDL_BUS_PCI)
+				/* enable all IRQ */
+				byteout(cs->hw.sedl.cfg_reg+ 5, 0x02);
 			reset_sedlbauer(cs);
 			if (cs->hw.sedl.chip == SEDL_CHIP_ISAC_ISAR) {
 				clear_pending_isac_ints(cs);
@@ -667,7 +673,7 @@ setup_sedlbauer(struct IsdnCard *card)
 		byteout(cs->hw.sedl.cfg_reg, 0xff);
 		byteout(cs->hw.sedl.cfg_reg, 0x00);
 		byteout(cs->hw.sedl.cfg_reg+ 2, 0xdd);
-		byteout(cs->hw.sedl.cfg_reg+ 5, 0x02);
+		byteout(cs->hw.sedl.cfg_reg+ 5, 0); /* disable all IRQ */
 		byteout(cs->hw.sedl.cfg_reg +3, cs->hw.sedl.reset_on);
 		mdelay(2);
 		byteout(cs->hw.sedl.cfg_reg +3, cs->hw.sedl.reset_off);