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Revision 242ce41fc92214c3430495edd43783c3ba3dcd2b authored by Sergei Shtylyov on 30 December 2006, 00:49:18 UTC, committed by Linus Torvalds on 30 December 2006, 18:56:43 UTC 
[PATCH] PIIX: remove check for broken MW DMA mode 0
 
There's no need to check in piix_config_drive_for_dma() for broken MW DMA
mode 0 as this mode is not supported by the driver (it sets
hwif->mwdma_mask to 0x6), and hence can't be selected by ide_dma_speed().

(Alan sayeth "Probably right but if not you've got a subtle corruptor.  Should
at least stick a BUG_ON mode 0 setting right close when the mode is set.")

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 755cd90
Raw File
pbm.h 
/* $Id: pbm.h,v 1.3 1999/12/20 17:06:35 zaitcev Exp $
 *
 * pbm.h: PCI bus module pseudo driver software state
 *        Adopted from sparc64 by V. Roganov and G. Raiko
 *
 * Original header:
 * pbm.h: U2P PCI bus module pseudo driver software state.
 *
 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
 *
 * To put things into perspective, consider sparc64 with a few PCI controllers.
 * Each type would have an own structure, with instances related one to one.
 * We have only pcic on sparc, but we want to be compatible with sparc64 pbm.h.
 * All three represent different abstractions.
 *   pci_bus  - Linux PCI subsystem view of a PCI bus (including bridged buses)
 *   pbm      - Arch-specific view of a PCI bus (sparc or sparc64)
 *   pcic     - Chip-specific information for PCIC.
 */

#ifndef __SPARC_PBM_H
#define __SPARC_PBM_H

#include <linux/pci.h>
#include <asm/oplib.h>
#include <asm/prom.h>

struct linux_pbm_info {
	int		prom_node;
	char		prom_name[64];
	/* struct linux_prom_pci_ranges	pbm_ranges[PROMREG_MAX]; */
	/* int		num_pbm_ranges; */

	/* Now things for the actual PCI bus probes. */
	unsigned int	pci_first_busno;	/* Can it be nonzero? */
	struct pci_bus	*pci_bus;		/* Was inline, MJ allocs now */
};

/* PCI devices which are not bridges have this placed in their pci_dev
 * sysdata member.  This makes OBP aware PCI device drivers easier to
 * code.
 */
struct pcidev_cookie {
	struct linux_pbm_info		*pbm;
	struct device_node		*prom_node;
};

#endif /* !(__SPARC_PBM_H) */
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