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ide: remove CONFIG_IDEDISK_MULTI_MODE

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Use multi PIO by default when available and remove no longer
needed CONFIG_IDEDISK_MULTI_MODE (it should be safe nowadays,
despite to what help entry has been saying).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-10-10 22:39:26 +02:00
parent 7e59ea21aa
commit 7c51c17e04
2 changed files with 2 additions and 27 deletions
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23
drivers/ide/Kconfig
View File

@ -131,29 +131,6 @@ config BLK_DEV_IDEDISK
If unsure, say Y.
config IDEDISK_MULTI_MODE
bool "Use multiple sector mode for Programmed Input/Output by default"
help
This setting is irrelevant for most IDE disks, with direct memory
access, to which multiple sector mode does not apply. Multiple sector
mode is a feature of most modern IDE hard drives, permitting the
transfer of multiple sectors per Programmed Input/Output interrupt,
rather than the usual one sector per interrupt. When this feature is
enabled, it can reduce operating system overhead for disk Programmed
Input/Output. On some systems, it also can increase the data
throughput of Programmed Input/Output. Some drives, however, seemed
to run slower with multiple sector mode enabled. Some drives claimed
to support multiple sector mode, but lost data at some settings.
Under rare circumstances, such failures could result in massive
filesystem corruption.
If you get the following error, try to say Y here:
hda: set_multmode: status=0x51 { DriveReady SeekComplete Error }
hda: set_multmode: error=0x04 { DriveStatusError }
If in doubt, say N.
config BLK_DEV_IDECS
tristate "PCMCIA IDE support"
depends on PCMCIA

6
drivers/ide/ide-probe.c
View File

@ -89,16 +89,14 @@ static void ide_disk_init_mult_count(ide_drive_t *drive)
u8 max_multsect = id[ATA_ID_MAX_MULTSECT] & 0xff;
if (max_multsect) {
#ifdef CONFIG_IDEDISK_MULTI_MODE
if ((max_multsect / 2) > 1)
id[ATA_ID_MULTSECT] = max_multsect | 0x100;
else
id[ATA_ID_MULTSECT] &= ~0x1ff;
drive->mult_req = id[ATA_ID_MULTSECT] & 0xff;
#endif
if ((id[ATA_ID_MULTSECT] & 0x100) &&
(id[ATA_ID_MULTSECT] & 0xff))
if (drive->mult_req)
drive->special.b.set_multmode = 1;
}
}