[PATCH] libata: Use ATA_FLAG_PIO_POLLING for pdc_adma

pdc_adma was overlooked and broken by the irq-pio patch:
Only HSM_ST_LAST interrupts should be delivered to this LLDD.

Adding ATA_FLAG_PIO_POLLING to pdc_adma fixes the problem (temporarily),
before we convert the irq handler of pdc_adma to handle all interrupts.
Signed-off-by: NAlbert Lee <albertcc@tw.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/scsi/pdc_adma.c

@@ -183,7 +183,8 @@ static struct ata_port_info adma_port_info[] = {
 	{
 		.sht		= &adma_ata_sht,
 		.host_flags	= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST |
-				  ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO,
+				  ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO |
+				  ATA_FLAG_PIO_POLLING,
 		.pio_mask	= 0x10, /* pio4 */
 		.udma_mask	= 0x1f, /* udma0-4 */
 		.port_ops	= &adma_ata_ops,