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ide: remove CONFIG_IDEDMA_{ICS,PCI}_AUTO config options

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All modern distributions have been setting these options to "y" for ages.
(additionally "n" cases have been obsoleted for few years).  Therefore use
DMA by default and remove CONFIG_IDEDMA_{ICS,PCI}_AUTO (also remove no longer
needed CONFIG_IDEDMA_AUTO).  This fixes DMA support for rare configurations
where CONFIG_IDEDMA_{ICS,PCI}_AUTO was set to "n" but "hdparm -d 1" was used
to enable DMA support and which were forced to PIO mode by "ide: don't allow
DMA to be enabled if CONFIG_IDEDMA_{ICS,PCI}_AUTO=n" patch.  There is no
functionality loss because "ide=nodma" kernel option is still available.

Cc: Patrick Horn <phrh@yahoo.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-03-17 21:57:41 +01:00
parent 6f5050a96c
commit 120b9cfddf
4 changed files with 1 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/ide/Kconfig
View File

@ -434,24 +434,8 @@ config BLK_DEV_IDEDMA_FORCED
Generally say N here.
config IDEDMA_PCI_AUTO
bool "Use PCI DMA by default when available"
---help---
Prior to kernel version 2.1.112, Linux used to automatically use
DMA for IDE drives and chipsets which support it. Due to concerns
about a couple of cases where buggy hardware may have caused damage,
the default is now to NOT use DMA automatically. To revert to the
previous behaviour, say Y to this question.
If you suspect your hardware is at all flakey, say N here.
Do NOT email the IDE kernel people regarding this issue!
It is normally safe to answer Y to this question unless your
motherboard uses a VIA VP2 chipset, in which case you should say N.
config IDEDMA_ONLYDISK
bool "Enable DMA only for disks "
depends on IDEDMA_PCI_AUTO
help
This is used if you know your ATAPI Devices are going to fail DMA
Transfers.
@ -851,19 +835,6 @@ config BLK_DEV_IDEDMA_ICS
Say Y here if you want to add DMA (Direct Memory Access) support to
the ICS IDE driver.
config IDEDMA_ICS_AUTO
bool "Use ICS DMA by default"
depends on BLK_DEV_IDEDMA_ICS
help
Prior to kernel version 2.1.112, Linux used to automatically use
DMA for IDE drives and chipsets which support it. Due to concerns
about a couple of cases where buggy hardware may have caused damage,
the default is now to NOT use DMA automatically. To revert to the
previous behaviour, say Y to this question.
If you suspect your hardware is at all flakey, say N here.
Do NOT email the IDE kernel people regarding this issue!
config BLK_DEV_IDE_RAPIDE
tristate "RapIDE interface support"
depends on ARM && ARCH_ACORN
@ -1086,9 +1057,6 @@ config IDEDMA_IVB
It is normally safe to answer Y; however, the default is N.
config IDEDMA_AUTO
def_bool IDEDMA_PCI_AUTO || IDEDMA_ICS_AUTO
endif
config BLK_DEV_HD_ONLY

13
drivers/ide/arm/icside.c
View File

@ -196,11 +196,6 @@ static void icside_maskproc(ide_drive_t *drive, int mask)
}
#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
#ifndef CONFIG_IDEDMA_ICS_AUTO
#warning CONFIG_IDEDMA_ICS_AUTO=n support is obsolete, and will be removed soon.
#endif
/*
* SG-DMA support.
*
@ -474,12 +469,6 @@ static int icside_dma_lostirq(ide_drive_t *drive)
static void icside_dma_init(ide_hwif_t *hwif)
{
int autodma = 0;
#ifdef CONFIG_IDEDMA_ICS_AUTO
autodma = 1;
#endif
printk(" %s: SG-DMA", hwif->name);
hwif->atapi_dma = 1;
@ -489,7 +478,7 @@ static void icside_dma_init(ide_hwif_t *hwif)
hwif->dmatable_cpu = NULL;
hwif->dmatable_dma = 0;
hwif->speedproc = icside_set_speed;
hwif->autodma = autodma;
hwif->autodma = 1;
hwif->ide_dma_check = icside_dma_check;
hwif->dma_host_off = icside_dma_host_off;

4
drivers/ide/ide.c
View File

@ -177,11 +177,7 @@ DECLARE_MUTEX(ide_cfg_sem);
static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
#endif
#ifdef CONFIG_IDEDMA_AUTO
int noautodma = 0;
#else
int noautodma = 1;
#endif
EXPORT_SYMBOL(noautodma);

5
drivers/ide/setup-pci.c
View File

@ -505,11 +505,6 @@ static void ide_hwif_setup_dma(struct pci_dev *dev, ide_pci_device_t *d, ide_hwi
}
}
}
#ifndef CONFIG_IDEDMA_PCI_AUTO
#warning CONFIG_IDEDMA_PCI_AUTO=n support is obsolete, and will be removed soon.
#endif
#endif /* CONFIG_BLK_DEV_IDEDMA_PCI*/
/**