ide: remove CONFIG_IDEDISK_MULTI_MODE (7c51c17e) · Commits · 戴 / test

drivers/ide/Kconfig

+0 −23

Original line number	Diff line number	Diff line
		@@ -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

+2 −4

Original line number	Diff line number	Diff line
		@@ -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;
		}
		}