Tejun Heo d6515e6ff4 libata: make sure port is thawed when skipping resets ... When SCR access is available and the link is offline, softreset is skipped as it only wastes time and some controllers don't respond very well. However, the skip path forgot to thaw the port, which not only blocks further event notification from the port but also causes repeated EH invocations on the same event on drivers which rely on ->thaw() to clear events if the IRQ is shared with another device or port. This problem has always been there but is uncovered by recent sata_nv nf2/3 change which dropped hardreset support while maintaining SCR access. nf2/3 doesn't clear hotplug event mask from the interrupt handler but relies on ->thaw() to clear them. When the hardreset was there, the reset action was never skipped and the port was always thawed but, with the hardreset gone, ->prereset() determines that there's no need for softreset and both ->softreset() and ->thaw() are skipped. This leads to stuck hotplug event in the IRQ status register triggering hotplug event whenever IRQ is delieverd on the same IRQ. As the controller shares the same IRQ for both ports, this happens on every IO if one port is occpupied and the other isn't. This patch fixes the problem by making sure that the port is thawed on reset-skip path. bko#11615 reports this problem. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Robert Hancock <hancockrwd@gmail.com> Reported-by: Dan Andresan <danyer@gmail.com> Reported-by: Arne Woerner <arne_woerner@yahoo.com> Reported-by: Stefan Lippers-Hollmann <s.L-H@gmx.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>		2009-03-05 07:25:43 -05:00
..
ahci.c	ahci: Add the Device IDs for MCP89 and remove IDs of MCP7B to/from ahci.c	2009-03-05 07:25:30 -05:00
ata_generic.c	libata: beef up iterators	2008-12-28 22:43:20 -05:00
ata_piix.c	SATA PIIX: Blacklist system that spins off disks during ACPI power off	2009-01-27 02:15:53 -05:00
Kconfig	sata_mv: no longer experimental (v2)	2009-01-26 06:42:10 -05:00
libata-acpi.c	Merge branch 'linus' into release	2009-01-09 03:39:43 -05:00
libata-core.c	libata: fix dma_unmap_sg misuse	2009-03-05 07:24:57 -05:00
libata-eh.c	libata: make sure port is thawed when skipping resets	2009-03-05 07:25:43 -05:00
libata-pmp.c	libata: add @spd_limit to sata_down_spd_limit()	2009-02-02 23:03:22 -05:00
libata-scsi.c	libata: fix kernel-doc warnings	2009-02-02 22:41:45 -05:00
libata-sff.c	libata-sff: fix 32-bit PIO ATAPI regression	2009-02-16 18:55:56 -05:00
libata.h	libata: add @spd_limit to sata_down_spd_limit()	2009-02-02 23:03:22 -05:00
Makefile	libata: New driver for OCTEON SOC Compact Flash interface (v7).	2009-01-16 10:23:39 -05:00
pata_acpi.c	ACPI: remove private acpica headers from driver files	2008-12-31 01:15:22 -05:00
pata_ali.c	drivers/ata/pata_ali.c: s/isa_bridge/ali_isa_bridge/ to fix alpha build	2009-01-16 10:23:43 -05:00
pata_amd.c	[libata] pata_amd: program FIFO	2009-02-25 15:30:16 -05:00
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	pata_atiixp: update port enabledness test handling	2009-01-16 10:20:27 -05:00
pata_bf54x.c	[libata] Update kernel-doc comments to match source code	2008-12-28 22:43:21 -05:00
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	libata: rename SFF functions	2008-04-17 15:44:21 -04:00
pata_cs5530.c	ata: Switch all my stuff to a common address	2008-10-27 23:54:50 -04:00
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	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	libata: rename SFF functions	2008-04-17 15:44:21 -04:00
pata_hpt3x3.c	[libata] pata_hpt3x3: correct _freeze() function declaration	2009-01-08 16:28:21 -05:00
pata_hpt37x.c	libata: rename SFF functions	2008-04-17 15:44:21 -04:00
pata_hpt366.c	pata_hpt366: reimplement mode programming	2009-01-08 16:29:20 -05:00
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	pata_it821x: resume from hibernation fails with RAID volume	2009-02-25 15:22:44 -05:00
pata_it8213.c	libata: rename SFF functions	2008-04-17 15:44:21 -04:00
pata_ixp4xx_cf.c	libata: beef up iterators	2008-12-28 22:43:20 -05:00
pata_jmicron.c	ata: Switch all my stuff to a common address	2008-10-27 23:54:50 -04:00
pata_legacy.c	[libata] pata_legacy: for VLB 32bit PIO don't try tricks with slop	2009-02-25 15:30:23 -05:00
pata_marvell.c	ata: Switch all my stuff to a common address	2008-10-27 23:54:50 -04:00
pata_mpc52xx.c	powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver	2008-12-21 02:54:29 -07:00
pata_mpiix.c	libata: Add 32bit PIO support	2009-01-08 16:34:27 -05:00
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: update ID table	2008-12-09 00:44:19 -05:00
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_octeon_cf.c	libata: New driver for OCTEON SOC Compact Flash interface (v7).	2009-01-16 10:23:39 -05:00
pata_of_platform.c	powerpc: Fix no interrupt handling in pata_of_platform	2008-10-10 15:55:17 +11:00
pata_oldpiix.c	[libata] Update kernel-doc comments to match source code	2008-12-28 22:43:21 -05:00
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	[libata] pata_pcmcia: another memory card support	2008-11-11 02:59:13 -05:00
pata_pdc202xx_old.c	ata: Switch all my stuff to a common address	2008-10-27 23:54:50 -04:00
pata_pdc2027x.c	[libata] Update kernel-doc comments to match source code	2008-12-28 22:43:21 -05:00
pata_platform.c	pata_platform: __pata_platform_remove() shouldn't be in discard section	2009-01-08 16:10:29 -05:00
pata_qdi.c	Fix my email address in qd65xx.[ch]/pata_qdi.c	2009-02-03 16:53:56 -08:00
pata_radisys.c	[libata] Update kernel-doc comments to match source code	2008-12-28 22:43:21 -05:00
pata_rb532_cf.c	pata-rb532-cf: remove set_irq_type from finish_io	2009-01-27 02:13:03 -05:00
pata_rz1000.c	libata: beef up iterators	2008-12-28 22:43:20 -05:00
pata_sc1200.c	ata: Switch all my stuff to a common address	2008-10-27 23:54:50 -04:00
pata_scc.c	[libata] Update kernel-doc comments to match source code	2008-12-28 22:43:21 -05:00
pata_sch.c	[libata] pata_sch: notice attached slave devices	2008-11-11 02:58:59 -05:00
pata_serverworks.c	[libata] Update kernel-doc comments to match source code	2008-12-28 22:43:21 -05:00
pata_sil680.c	libata: Add 32bit PIO support	2009-01-08 16:34:27 -05:00
pata_sis.c	[libata] Update kernel-doc comments to match source code	2008-12-28 22:43:21 -05:00
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	Add support for VT6415 PCIE PATA IDE Host Controller	2009-02-17 16:56:31 -08:00
pata_winbond.c	ata: Switch all my stuff to a common address	2008-10-27 23:54:50 -04:00
pdc_adma.c	libata: rename SFF functions	2008-04-17 15:44:21 -04:00
sata_fsl.c	sata_fsl: Return non-zero on error in probe()	2009-01-16 10:23:58 -05:00
sata_inic162x.c	libata: make SCR access ops per-link	2008-09-29 00:22:28 -04:00
sata_mv.c	sata_mv: fix SoC interrupt breakage	2009-02-25 15:25:35 -05:00
sata_nv.c	sata_nv: fix module parameter description	2009-03-05 07:25:37 -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	libata annotations and fixes	2008-01-23 05:24:15 -05:00
sata_qstor.c	libata: make SCR access ops per-link	2008-09-29 00:22:28 -04:00
sata_sil24.c	sata_sil24: remove unused sil24_port_multiplier	2009-01-08 16:09:59 -05:00
sata_sil.c	[libata] sata_sil: Fix compilation error with libata debugging enabled	2009-02-02 22:38:29 -05:00
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	libata: add qc_fill_rtf port operation	2008-04-17 15:44:23 -04:00
sata_uli.c	libata: make SCR access ops per-link	2008-09-29 00:22:28 -04:00
sata_via.c	sata_via: Add VT8261 support	2009-01-16 10:23:22 -05:00
sata_vsc.c	libata: make SCR access ops per-link	2008-09-29 00:22:28 -04:00
sis.h	libata: PATA-mode fixes for sis_sata	2007-07-02 10:17:42 -04:00