unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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kernel-hacking-2024-linux-s.../drivers/ata
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Tejun Heo f3faf8fc3f sata_nv: don't diddle with nIEN on mcp55 
On mcp55, nIEN gets stuck once set and liteon blueray rom iHOS104-08
violates ATA specification and fails to set I on D2H Reg FIS if nIEN
is set when the command was issued.  When the other party is following
the spec, both devices can work fine but when the two flaws are put
together, they can't talk to each other.

mcp55 has its own IRQ masking mechanism and there's no reason to mess
with nIEN in the first place.  Fix it by dropping nIEN diddling from
nv_mcp55_freeze/thaw().

This was originally reported by Cengiz.  Although Cengiz hasn't
verified the fix yet, I could reproduce this problem and verfiy the
fix.  Even if Cengiz is experiencing different or additional problems,
this patch is needed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Cengiz Günay <cgunay@emory.edu>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-06-02 13:49:57 -04:00
..
ahci.c ahci: EM message type auto detect 2010-05-14 17:35:51 -04:00
ahci.h ahci: add "em_buffer" attribute for AHCI hosts 2010-05-14 17:35:51 -04:00
ahci_platform.c ahci_platform: properly set up EM messaging 2010-05-14 17:35:51 -04:00
ata_generic.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
ata_piix.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
Kconfig libata-sff: make BMDMA optional 2010-05-25 19:41:12 -04:00
libahci.c ahci: add "em_buffer" attribute for AHCI hosts 2010-05-14 17:35:51 -04:00
libata-acpi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
libata-core.c libata: implement dump_id force param 2010-05-25 19:41:19 -04:00
libata-eh.c libata-sff: separate out BMDMA EH 2010-05-19 13:36:46 -04:00
libata-pmp.c [libata] Disable R_OK (Early ACK) on SII 3726 PMP 2010-05-14 17:08:02 -04:00
libata-scsi.c libata: kill ATA_FLAG_DISABLED 2010-05-17 22:49:02 -04:00
libata-sff.c libata-sff: make BMDMA optional 2010-05-25 19:41:12 -04:00
libata.h libata-sff: separate out BMDMA EH 2010-05-19 13:36:46 -04:00
Makefile libata-sff: make BMDMA optional 2010-05-25 19:41:12 -04:00
pata_acpi.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_ali.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_amd.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_artop.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_at32.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pata_at91.c libata-sff: clean up BMDMA initialization 2010-05-19 13:32:19 -04:00
pata_atiixp.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_atp867x.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_bf54x.c libata-sff: ata_sff_irq_clear() is BMDMA specific 2010-05-25 19:40:19 -04:00
pata_cmd64x.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_cmd640.c libata-sff: clean up BMDMA initialization 2010-05-19 13:32:19 -04:00
pata_cs5520.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_cs5530.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_cs5535.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_cs5536.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_cypress.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_efar.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_hpt3x2n.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_hpt3x3.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_hpt37x.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_hpt366.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_icside.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_isapnp.c
pata_it821x.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_it8213.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_ixp4xx_cf.c
pata_jmicron.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_legacy.c pata_legacy: add pointers to QDI65x0 documentation 2009-12-03 16:06:47 -05:00
pata_macio.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_marvell.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_mpc52xx.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_mpiix.c
pata_netcell.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_ninja32.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_ns87410.c libata: Pass host flags into the pci helper 2010-03-01 14:58:46 -05:00
pata_ns87415.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_octeon_cf.c libata-sff: kill dummy BMDMA ops from sata_qstor and pata_octeon_cf 2010-05-25 19:40:45 -04:00
pata_of_platform.c of: Remove duplicate fields from of_platform_driver 2010-05-22 00:10:40 -06:00
pata_oldpiix.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_opti.c libata: Pass host flags into the pci helper 2010-03-01 14:58:46 -05:00
pata_optidma.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_palmld.c [ARM] 5522/1: PalmLD: IDE support 2009-05-31 14:50:40 +01:00
pata_pcmcia.c Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev 2010-05-20 09:27:37 -07:00
pata_pdc202xx_old.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_pdc2027x.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_piccolo.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_platform.c libata-sff: clean up BMDMA initialization 2010-05-19 13:32:19 -04:00
pata_qdi.c
pata_radisys.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_rb532_cf.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pata_rdc.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_rz1000.c libata: Pass host flags into the pci helper 2010-03-01 14:58:46 -05:00
pata_sc1200.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_scc.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
pata_sch.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_serverworks.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_sil680.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_sis.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_sl82c105.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_triflex.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_via.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
pata_winbond.c
pdc_adma.c libata-sff: ata_sff_[dumb_]qc_prep are BMDMA specific 2010-05-19 13:36:50 -04:00
sata_fsl.c of: Remove duplicate fields from of_platform_driver 2010-05-22 00:10:40 -06:00
sata_inic162x.c libata-sff: clean up BMDMA initialization 2010-05-19 13:32:19 -04:00
sata_mv.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
sata_nv.c sata_nv: don't diddle with nIEN on mcp55 2010-06-02 13:49:57 -04:00
sata_promise.c libata-sff: prd is BMDMA specific 2010-05-19 13:38:54 -04:00
sata_promise.h
sata_qstor.c libata-sff: kill dummy BMDMA ops from sata_qstor and pata_octeon_cf 2010-05-25 19:40:45 -04:00
sata_sil.c libata-sff: ata_sff_irq_clear() is BMDMA specific 2010-05-25 19:40:19 -04:00
sata_sil24.c libata: kill ATA_FLAG_DISABLED 2010-05-17 22:49:02 -04:00
sata_sis.c libata-sff: separate out BMDMA init 2010-05-25 19:40:30 -04:00
sata_svw.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
sata_sx4.c libata-sff: separate out BMDMA EH 2010-05-19 13:36:46 -04:00
sata_uli.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
sata_via.c sata_via: magic vt6421 fix for transmission problems w/ WD drives 2010-06-02 13:49:50 -04:00
sata_vsc.c libata-sff: separate out BMDMA irq handler 2010-05-25 19:40:24 -04:00
sis.h