1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 8a66a2871b3a..f6db2f37efad 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -378,6 +378,9 @@ static unsigned int __devinit init_chipset_pdcnew(struct pci_dev *dev, const cha
         int f, r;
         u8 pll_ctl0, pll_ctl1;
 
+        if (dma_base == 0)
+                return -EFAULT;
+
 #ifdef CONFIG_PPC_PMAC
         apple_kiwi_init(dev);
 #endif
@@ -494,15 +497,18 @@ static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
         hwif->speedproc = &pdcnew_tune_chipset;
         hwif->resetproc = &pdcnew_reset;
 
+        hwif->err_stops_fifo = 1;
+
         hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
 
+        if (hwif->dma_base == 0)
+                return;
+
         hwif->atapi_dma  = 1;
 
         hwif->ultra_mask = hwif->cds->udma_mask;
         hwif->mwdma_mask = 0x07;
 
-        hwif->err_stops_fifo = 1;
-
         hwif->ide_dma_check = &pdcnew_config_drive_xfer_rate;
 
         if (hwif->cbl != ATA_CBL_PATA40_SHORT)