Tejun Heo 6a6b97d360 libata: improve phantom device detection ... Currently libata uses four methods to detect device presence. 1. PHY status if available. 2. TF register R/W test (only promotes presence, never demotes) 3. device signature after reset 4. IDENTIFY failure detection in SFF state machine Combination of the above works well in most cases but recently there have been a few reports where a phantom device causes unnecessary delay during probe. In both cases, PHY status wasn't available. In one case, it passed #2 and #3 and failed IDENTIFY with ATA_ERR which didn't qualify as #4. The other failed #2 but as it passed #3 and #4, it still caused failure. In both cases, phantom device reported diagnostic failure, so these cases can be safely worked around by considering any !ATA_DRQ IDENTIFY failure as NODEV_HINT if diagnostic failure is set. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>		2008-11-14 18:51:57 -05:00
..
ahci.c
ata_generic.c
ata_piix.c
Kconfig
libata-acpi.c
libata-core.c	libata: Avoid overflow in ata_tf_read_block() when tf->hba_lbal > 127	2008-11-11 02:59:27 -05:00
libata-eh.c	libata: fix last_reset timestamp handling	2008-11-11 03:01:21 -05:00
libata-pmp.c
libata-scsi.c	libata: revert convert-to-block-tagging patches	2008-11-10 08:04:47 -08:00
libata-sff.c	libata: improve phantom device detection	2008-11-14 18:51:57 -05:00
libata.h	libata: revert convert-to-block-tagging patches	2008-11-10 08:04:47 -08:00
Makefile
pata_acpi.c
pata_ali.c
pata_amd.c
pata_artop.c
pata_at32.c
pata_atiixp.c
pata_bf54x.c
pata_cmd64x.c
pata_cmd640.c
pata_cs5520.c
pata_cs5530.c
pata_cs5535.c	[libata] pata_cs553*.c: cleanup kernel-doc	2008-11-11 02:58:30 -05:00
pata_cs5536.c	[libata] pata_cs553*.c: cleanup kernel-doc	2008-11-11 02:58:30 -05:00
pata_cypress.c
pata_efar.c
pata_hpt3x2n.c
pata_hpt3x3.c
pata_hpt37x.c
pata_hpt366.c
pata_icside.c
pata_isapnp.c
pata_it821x.c
pata_it8213.c
pata_ixp4xx_cf.c
pata_jmicron.c
pata_legacy.c
pata_marvell.c
pata_mpc52xx.c
pata_mpiix.c
pata_netcell.c
pata_ninja32.c
pata_ns87410.c
pata_ns87415.c
pata_of_platform.c
pata_oldpiix.c
pata_opti.c
pata_optidma.c
pata_pcmcia.c	[libata] pata_pcmcia: another memory card support	2008-11-11 02:59:13 -05:00
pata_pdc202xx_old.c
pata_pdc2027x.c
pata_platform.c
pata_qdi.c
pata_radisys.c
pata_rb532_cf.c
pata_rz1000.c
pata_sc1200.c
pata_scc.c
pata_sch.c	[libata] pata_sch: notice attached slave devices	2008-11-11 02:58:59 -05:00
pata_serverworks.c
pata_sil680.c
pata_sis.c
pata_sl82c105.c
pata_triflex.c
pata_via.c
pata_winbond.c
pdc_adma.c
sata_fsl.c
sata_inic162x.c
sata_mv.c
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
sata_sil.c
sata_sil24.c
sata_sis.c
sata_svw.c
sata_sx4.c
sata_uli.c
sata_via.c	sata_via: restore vt*_prepare_host error handling	2008-11-04 01:08:06 -05:00
sata_vsc.c
sis.h