pdc202xx_old: add missing ->dma_base check
If ->dma_base is not set (== PCI BAR4 cannot be reserved) then DMA hooks
shouldn't be initialized or bad things will happen.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index fbcb0bb..e19a891 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/pdc202xx_old.c Version 0.50 Mar 3, 2007
+ * linux/drivers/ide/pci/pdc202xx_old.c Version 0.51 Jul 27, 2007
*
* Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2006-2007 MontaVista Software, Inc.
@@ -337,15 +337,18 @@
hwif->speedproc = &pdc202xx_tune_chipset;
+ hwif->err_stops_fifo = 1;
+
hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
+ if (hwif->dma_base == 0)
+ return;
+
hwif->ultra_mask = hwif->cds->udma_mask;
hwif->mwdma_mask = 0x07;
hwif->swdma_mask = 0x07;
hwif->atapi_dma = 1;
- hwif->err_stops_fifo = 1;
-
hwif->ide_dma_check = &pdc202xx_config_drive_xfer_rate;
hwif->dma_lost_irq = &pdc202xx_dma_lost_irq;
hwif->dma_timeout = &pdc202xx_dma_timeout;