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8a8bc22332
kernel-ark/drivers/ata
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Tejun Heo 8a8bc22332 libata: revert convert-to-block-tagging patches 
This patch reverts the following three commits which convert libata to
use block layer tagging.

 43a49cbdf3
 e013e13bf6
 2fca5ccf97

Although using block layer tagging is the right direction, due to the
tight coupling among tag number, data structure allocation and
hardware command slot allocation, libata doesn't work correctly with
the current conversion.

The biggest problem is guaranteeing that tag 0 is always used for
non-NCQ commands.  Due to the way blk-tag is implemented and how SCSI
starts and finishes requests, such guarantee can't be made.  I'm not
sure whether this would actually break any low level driver but it
doesn't look like a good idea to break such assumption given the
frailty of ATA controllers.

So, for the time being, keep using the old dumb in-libata qc
allocation.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axobe <jens.axboe@oracle.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-10 08:04:47 -08:00
..
ahci.c libata: ahci enclosure management bit mask 2008-10-28 00:37:15 -04:00
ata_generic.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
ata_piix.c ATA: remove excess kernel-doc notation 2008-10-31 01:42:49 -04:00
Kconfig Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-10-11 12:39:35 -07:00
libata-acpi.c dock: introduce .uevent for devices in dock, eg libata 2008-09-23 23:23:00 -04:00
libata-core.c libata: revert convert-to-block-tagging patches 2008-11-10 08:04:47 -08:00
libata-eh.c libata: clear saved xfer_mode and ncq_enabled on device detach 2008-10-27 23:55:40 -04:00
libata-pmp.c libata: improve EH retry delay handling 2008-07-14 15:59:32 -04:00
libata-scsi.c libata: revert convert-to-block-tagging patches 2008-11-10 08:04:47 -08:00
libata-sff.c libata-sff: fix ata_sff_post_internal_cmd() 2008-10-22 20:40:15 -04:00
libata.h libata: revert convert-to-block-tagging patches 2008-11-10 08:04:47 -08:00
Makefile libata: Add Intel SCH PATA driver 2008-05-06 11:33:58 -04:00
pata_acpi.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_ali.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_amd.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_artop.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_at32.c avr32: Use <mach/foo.h> instead of <asm/arch/foo.h> 2008-08-05 14:36:57 +02:00
pata_atiixp.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_bf54x.c [libata] pata_bf54x: Add proper PM operation 2008-09-29 00:28:29 -04:00
pata_cmd64x.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_cmd640.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_cs5520.c
pata_cs5530.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_cs5535.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_cs5536.c
pata_cypress.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_efar.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_hpt3x2n.c
pata_hpt3x3.c
pata_hpt37x.c
pata_hpt366.c
pata_icside.c libata-sff: Fix oops reported in kerneloops.org for pnp devices with no ctl 2008-06-04 06:40:41 -04:00
pata_isapnp.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_it821x.c libata: Fix LBA48 on pata_it821x RAID volumes. 2008-10-27 23:56:33 -04:00
pata_it8213.c
pata_ixp4xx_cf.c [ARM] 5179/1: Replace obsolete IRQT_* and __IRQT_* values with IRQ_TYPE_* 2008-07-27 09:46:18 +01:00
pata_jmicron.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_legacy.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_marvell.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_mpc52xx.c powerpc/pata_mpc52xx: use linux/of_platform.h instead of asm 2008-07-12 12:10:52 -06:00
pata_mpiix.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_netcell.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_ninja32.c pata_ninja32: suspend/resume support 2008-10-28 00:35:59 -04:00
pata_ns87410.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_ns87415.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_of_platform.c powerpc: Fix no interrupt handling in pata_of_platform 2008-10-10 15:55:17 +11:00
pata_oldpiix.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_opti.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_optidma.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_pcmcia.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_pdc202xx_old.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_pdc2027x.c
pata_platform.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_qdi.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_radisys.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_rb532_cf.c libata-sff: Fix oops reported in kerneloops.org for pnp devices with no ctl 2008-06-04 06:40:41 -04:00
pata_rz1000.c
pata_sc1200.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_scc.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_sch.c libata: Add Intel SCH PATA driver 2008-05-06 11:33:58 -04:00
pata_serverworks.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_sil680.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_sis.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_sl82c105.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_triflex.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_via.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pata_winbond.c ata: Switch all my stuff to a common address 2008-10-27 23:54:50 -04:00
pdc_adma.c
sata_fsl.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_inic162x.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_mv.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_nv.c sata_nv: fix generic, nf2/3 detection regression 2008-11-04 01:08:11 -05:00
sata_promise.c sata_promise: add ATA engine reset to reset ops 2008-11-04 01:08:03 -05:00
sata_promise.h
sata_qstor.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_sil24.c sata_sil24: configure max read request size to 4k 2008-10-27 23:55:27 -04:00
sata_sil.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_sis.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_svw.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_sx4.c
sata_uli.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sata_via.c sata_via: restore vt*_prepare_host error handling 2008-11-04 01:08:06 -05:00
sata_vsc.c libata: make SCR access ops per-link 2008-09-29 00:22:28 -04:00
sis.h