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7faa33da9b
linux/drivers/ata
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Tejun Heo 7faa33da9b ahci: start engine only during soft/hard resets 
This is another attempt at fixing the same problem that 270dac35c2
(libata: ahci_start_engine compliant to AHCI spec) tried to solve.
Unfortunately, 270dac35c2 created regressions for a lot more common
controllers and got reverted.

This specific AHCI IP block becomes a brick if the DMA engine is
started while DRQ is set.  It is not possible to avoid the condition
completely but the most common occurrence is caused by spurious use of
ahci_start_engine() from ahci_start_port() during init sequence.

DMA engine is started after both soft and hard resets and
ahci_start_port() is always followed by resets, so there is no reason
to start DMA engine from ahci_start_port().

This patch removes ahci_start_engine() invocation from
ahci_start_port().  This change makes failure path of
ahci_port_suspend() leave engine stopped without following resets.
This is resolved by replacing ahci_start_port() call with
ata_port_freeze() which forces resets afterwards, which is the better
behavior anyway.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Brian Norris <computersforpeace@gmail.com>
Reported-by: Jian Peng <jipeng2005@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-08 19:14:57 -05:00
..
acard-ahci.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
ahci_platform.c [libata] ahci_platform: fix DT probing 2011-11-17 02:10:49 -05:00
ahci.c [libata] ahci: Add ASMedia ASM1061 support 2011-11-09 01:47:36 -05:00
ahci.h ahci: move ahci_sb600_softreset to libahci.c and rename it 2011-07-23 17:57:36 -04:00
ata_generic.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
ata_piix.c ata_piix: unify code for programming PIO and MWDMA timings 2011-10-14 13:37:36 -04:00
Kconfig pata_of_platform: Add missing CONFIG_OF_IRQ dependency. 2011-12-22 15:00:32 -05:00
libahci.c ahci: start engine only during soft/hard resets 2012-01-08 19:14:57 -05:00
libata-acpi.c Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2011-08-02 21:17:02 -10:00
libata-core.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-10-28 16:44:18 -07:00
libata-eh.c [libata] Issue SRST to Sil3726 PMP 2011-11-09 01:38:00 -05:00
libata-pmp.c [libata] Issue SRST to Sil3726 PMP 2011-11-09 01:38:00 -05:00
libata-scsi.c [libata] libata-scsi.c: Add function parameter documentation 2011-11-09 01:32:27 -05:00
libata-sff.c libata: fix build without BMDMA 2011-11-17 02:11:42 -05:00
libata-transport.c drivers/ata/libata-transport.c: include linux/slab.h 2010-10-21 20:21:04 -04:00
libata-transport.h [libata] Add ATA transport class 2010-10-21 20:21:03 -04:00
libata.h libata: plumb sas port scan into standard libata paths 2011-03-02 02:36:45 -05:00
Makefile libata: remove no longer needed pata_qdi driver 2011-10-14 13:25:24 -04:00
pata_acpi.c ata: remove unnecessary code 2011-07-23 18:07:27 -04:00
pata_ali.c pata_ali: fix "Satelite" typo 2011-10-14 13:10:42 -04:00
pata_amd.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_arasan_cf.c pata_arasan_cf: remove bogus to_platform_device() calls 2011-10-14 13:18:34 -04:00
pata_artop.c pata_artop: add Power Management support 2011-10-14 13:32:54 -04:00
pata_at32.c libata: remove ATA_FLAG_MMIO 2011-03-02 02:36:46 -05:00
pata_at91.c Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm 2011-10-27 08:39:10 +02:00
pata_atiixp.c pata_atiixp: add proper ->prereset method 2011-10-14 13:16:49 -04:00
pata_atp867x.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_bf54x.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
pata_cmd64x.c pata_cmd64x: documentation fix 2011-10-14 13:10:46 -04:00
pata_cmd640.c pata_cmd640: implement sff_irq_check() method 2010-10-21 20:21:05 -04:00
pata_cs5520.c ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>( 2011-07-23 17:57:36 -04:00
pata_cs5530.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_cs5535.c pata_cs5535: no need to program PIO0 timings during device init 2011-10-14 13:08:05 -04:00
pata_cs5536.c pata_cs5536: avoid implicit MSR API inclusion on x86-64 2010-12-26 19:42:15 -05:00
pata_cypress.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_efar.c pata_efar: fix register naming used in efar_set_piomode() 2011-10-14 13:38:40 -04:00
pata_hpt3x2n.c ata: pata: Convert pr_*(DRV_NAME ...) to pr_fmt/pr_<level> 2011-03-14 02:56:31 -04:00
pata_hpt3x3.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_hpt37x.c ata: pata: Convert pr_*(DRV_NAME ...) to pr_fmt/pr_<level> 2011-03-14 02:56:31 -04:00
pata_hpt366.c pata_hpt366: add hpt36x_find_mode() helper 2011-10-14 13:07:18 -04:00
pata_icside.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
pata_imx.c ata: Add iMX pata support 2011-08-18 23:57:58 -04:00
pata_isapnp.c [libata] Improve timeout handling 2009-03-24 22:52:39 -04:00
pata_it821x.c pata_it821x: Fix RAID type display, by adding missing comma 2011-07-23 18:04:25 -04:00
pata_it8213.c pata_it8213: fix register naming used in it8213_set_piomode() 2011-10-14 13:25:17 -04:00
pata_ixp4xx_cf.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_jmicron.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_legacy.c pata_legacy: use PIO mask defines 2011-10-14 13:27:23 -04:00
pata_macio.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
pata_marvell.c pata_marvell: Add support for 88SE91A0, 88SE91A4 2011-06-24 02:07:35 -04:00
pata_mpc52xx.c ata: irq: Remove IRQF_DISABLED 2011-10-08 00:07:16 -04:00
pata_mpiix.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_netcell.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_ninja32.c [libata] trivial: trim trailing whitespace for drivers/ata/*.[ch] 2011-03-02 02:36:45 -05:00
pata_ns87410.c ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>( 2011-07-23 17:57:36 -04:00
pata_ns87415.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_octeon_cf.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_of_platform.c pata_of_platform: Don't use NO_IRQ 2011-11-10 15:57:59 -05:00
pata_oldpiix.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_opti.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_optidma.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_palmld.c Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel-stable 2011-03-26 10:03:03 +00:00
pata_pcmcia.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
pata_pdc202xx_old.c pata_pdc202xx_old: implement sff_irq_check() method 2010-10-21 20:21:06 -04:00
pata_pdc2027x.c pata_pdc2027x: add Power Management support 2011-10-14 13:32:52 -04:00
pata_piccolo.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_platform.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
pata_pxa.c libata: remove ATA_FLAG_MMIO 2011-03-02 02:36:46 -05:00
pata_radisys.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_rb532_cf.c drivers: Final irq namespace conversion 2011-03-29 14:48:19 +02:00
pata_rdc.c pata_rdc: add Power Management support 2011-10-14 13:38:36 -04:00
pata_rz1000.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_samsung_cf.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
pata_sc1200.c pata_sc1200: do not use c99 style comments 2011-10-14 13:01:42 -04:00
pata_scc.c pata_scc: add proper cable detection method 2011-10-14 13:19:51 -04:00
pata_sch.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_serverworks.c pata_serverworks: add serverworks_fixup() 2011-10-14 13:16:35 -04:00
pata_sil680.c pata_sil680: minor CodingStyle fixups 2011-10-14 12:46:45 -04:00
pata_sis.c pata_sis: code style cleanups for consistency 2011-10-08 00:07:16 -04:00
pata_sl82c105.c pata_sl82c105: add Power Management support 2011-10-14 13:32:53 -04:00
pata_triflex.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
pata_via.c pata_via: add via_fixup() 2011-10-14 13:22:54 -04:00
pdc_adma.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_dwc_460ex.c drivers/ata/sata_dwc_460ex.c: add missing kfree 2011-08-18 23:58:11 -04:00
sata_fsl.c ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> 2011-07-23 17:57:36 -04:00
sata_inic162x.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_mv.c sata_mv: use {platform|pci}_get_drvdata() 2011-10-07 23:46:20 -04:00
sata_nv.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_promise.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_promise.h libata annotations and fixes 2008-01-23 05:24:15 -05:00
sata_qstor.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_sil24.c sata_sil24: Use const 2011-10-08 00:07:15 -04:00
sata_sil.c [libata] sata_sil: fix used-uninit warning 2011-08-18 23:52:36 -04:00
sata_sis.c sata_sis.c: trivial spelling fix 2011-11-09 01:36:49 -05:00
sata_svw.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_sx4.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_uli.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sata_via.c ata: sata_via: Use dev_dbg 2011-07-23 17:57:36 -04:00
sata_vsc.c ata: Add and use ata_print_version_once 2011-07-23 17:57:36 -04:00
sis.h libata: PATA-mode fixes for sis_sata 2007-07-02 10:17:42 -04:00