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Commit e98d6e50 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
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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: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 01cc643a

drivers/ide/pci/pdc202xx_old.c

+6 −3
Original line number Diff line number Diff line 
/*

 *  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 @@ static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif) 


	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;