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b9a4197e26
linux/drivers/ata
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Tejun Heo b9a4197e26 libata: use PIO for non-16 byte aligned ATAPI commands 
The IDE driver used DMA for ATAPI commands if READ/WRITE command is
multiple of sector size or sg command is multiple of 16 bytes.  For
libata, READ/WRITE sector alignment is guaranteed by the high level
driver (sr), so we only have to worry about the 16 byte alignment.

This patch makes ata_check_atapi_dma() always request PIO for all data
transfer commands which are not multiple of 16 bytes.

The following reports are related to this problem.

http://bugzilla.kernel.org/show_bug.cgi?id=8605		(confirmed)
http://thread.gmane.org/gmane.linux.kernel/476620	(confirmed)
https://bugzilla.novell.com/show_bug.cgi?id=229260	(probably)

Albert first pointed out the difference between IDE and libata.  Kudos
to him.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-27 02:50:08 -04:00
..
ahci.c ahci: fix PORTS_IMPL override 2007-06-20 19:56:21 -04:00
ata_generic.c libata: bump versions 2007-05-21 20:26:38 -04:00
ata_piix.c ata_piix: add short 40c quirk for Acer Aspire 2030, take #2 2007-05-24 20:34:48 -04:00
Kconfig [ATA]: Back out bogus (SPARC64 && !PCI) Kconfig depends. 2007-06-04 23:33:04 -07:00
libata-acpi.c libata-acpi: add ATA_FLAG_ACPI_SATA port flag 2007-05-16 01:18:31 -04:00
libata-core.c libata: use PIO for non-16 byte aligned ATAPI commands 2007-06-27 02:50:08 -04:00
libata-eh.c libata: fix infinite EH waiting bug 2007-06-27 02:44:21 -04:00
libata-scsi.c libata: call ata_check_atapi_dma() with qc better prepared 2007-06-27 02:50:08 -04:00
libata-sff.c libata-core/sff: Fix multiple assumptions about DMA 2007-06-09 22:40:28 -04:00
libata.h libata: remove libata.spindown_compat 2007-05-17 20:57:38 -04:00
Makefile libata-acpi: s/CONFIG_SATA_ACPI/CONFIG_ATA_ACPI/ 2007-05-11 18:12:42 -04:00
pata_ali.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_amd.c PATA: Add the MCP73/77 support to PATA driver 2007-06-20 19:56:21 -04:00
pata_artop.c pata: Trivia 2007-05-25 17:29:59 -04:00
pata_atiixp.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_cmd64x.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_cmd640.c libata: Trim trailing whitespace 2007-05-21 20:14:23 -04:00
pata_cs5520.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_cs5530.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_cs5535.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_cypress.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_efar.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_hpt3x2n.c hpt3x2n: Correct revision boundary 2007-05-24 20:34:47 -04:00
pata_hpt3x3.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_hpt37x.c HPT374 is UDMA100 not UDMA133 2007-06-27 02:44:18 -04:00
pata_hpt366.c pata_hpt366: Enable bits are unreliable so don't use them 2007-05-21 20:00:43 -04:00
pata_icside.c [ARM] pata_icside: fix build errors 2007-05-11 17:19:07 +01:00
pata_isapnp.c remove unused variable in pata_isapnp 2007-06-09 22:40:27 -04:00
pata_it821x.c pata_it821x: fix section mismatch warning 2007-06-27 02:44:21 -04:00
pata_it8213.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_ixp4xx_cf.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_jmicron.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_legacy.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_marvell.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_mpc52xx.c libata: reimplement suspend/resume support using sdev->manage_start_stop 2007-05-11 18:01:03 -04:00
pata_mpiix.c libata: reimplement suspend/resume support using sdev->manage_start_stop 2007-05-11 18:01:03 -04:00
pata_netcell.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_ns87410.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_oldpiix.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_opti.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_optidma.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_pcmcia.c pata_pcmcia: recognize 2GB CompactFlash from Transcend 2007-05-11 18:16:00 -04:00
pata_pdc202xx_old.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_pdc2027x.c libata: add deadline support to prereset and reset methods 2007-05-01 07:49:53 -04:00
pata_platform.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_qdi.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_radisys.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_rz1000.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_sc1200.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_scc.c Fix build failure for drivers/ata/pata_scc.c 2007-05-25 04:17:31 -04:00
pata_serverworks.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_sil680.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_sis.c pata_sis: Fix and clean up some timing setups 2007-05-24 20:34:48 -04:00
pata_sl82c105.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_triflex.c libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00
pata_via.c libata: always use polling SETXFER 2007-06-04 16:48:34 -04:00
pata_winbond.c libata: bump versions 2007-05-21 20:26:38 -04:00
pdc_adma.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_inic162x.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_mv.c [libata] sata_mv: add TODO list 2007-05-24 23:40:15 -04:00
sata_nv.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_promise.c sata_promise: use TF interface for polling NODATA commands 2007-06-08 17:23:33 -07:00
sata_promise.h Move libata to drivers/ata. 2006-08-10 07:31:37 -04:00
sata_qstor.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_sil24.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_sil.c libata: Trim trailing whitespace 2007-05-21 20:14:23 -04:00
sata_sis.c libata: sata_sis fixes 2007-05-25 04:18:42 -04:00
sata_svw.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_sx4.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_uli.c libata: bump versions 2007-05-21 20:26:38 -04:00
sata_via.c [libata] sata_via, pata_via: Add PCI IDs. 2007-05-25 05:02:06 -04:00
sata_vsc.c libata: bump versions 2007-05-21 20:26:38 -04:00
sis.h libata: clean up SFF init mess 2007-05-11 18:09:18 -04:00