libata: kill spurious NCQ completion detection
PATCH 1/1 libata: kill spurious NCQ completion detection
Spurious NCQ completion detection implemented in ahci was incorrect. On AHCI receving and processing FISes and raising interrupts are not interlocked and spurious interrupts are expected.
For example, if an interrupt occurs while interrupt handler is running and the running interrupt handler handles the event the new IRQ indicated, after IRQ handler finishes, it will be executed again because IRQ pending bit is set by the new interrupt but there won't be anything to process.
Please read the following message for more information.
http://article.gmane.org/gmane.linux.ide/26012
This patch...
* Removes all spurious IRQ whining from ahci. Spurious NCQ completion detection was completely wrong. Spurious D2H Register FIS taught us that some early drives send spurious D2H Register FIS with I bit set while NCQ commands are in progress but none of recent drives does that and even the ones which show such behavior can do NCQ fine.
* Kills all NCQ blacklist entries which were added because of spurious NCQ completions. I tracked down each commit and verified all removed ones are actually added because of spurious completions.
WD740ADFD-00NLR1 wasn't deleted but moved upward because the drive not only had spurious NCQ completions but also is slow on sequential data transfers if NCQ is enabled.
Maxtor 7V300F0 was added by 0e3dbc01d53940fe10e5a5cfec15ede3e929c918 from Alan Cox. I can only find evidences that the drive only had troubles with spuruious completions by searching the mailing list. This entry needs to be verified and removed if it doesn't have other NCQ related problems.
--- drivers/ata/ahci.c | 65 ---------------------------------------------- drivers/ata/libata-core.c | 17 ------------ 2 files changed, 2 insertions(+), 80 deletions(-)
drivers/ata/ahci.c +1 -64
@@ -1432,7 +1432,7 @@ static void ahci_port_intr(struct ata_postruct ata_eh_info *ehi = &ap->eh_info;struct ahci_port_priv *pp = ap->private_data;u32 status, qc_active; -int rc, known_irq =0 ; +int rc; status =readl (port_mmio +PORT_IRQ_STAT );writel (status, port_mmio +PORT_IRQ_STAT );
@@ -1448,74 +1448,11 @@ static void ahci_port_intr(struct ata_po qc_active =readl (port_mmio +PORT_CMD_ISSUE ); rc =ata_qc_complete_multiple (ap, qc_active,NULL ); -if (rc >0 ) -return ;if (rc <0 ) { ehi->err_mask |=AC_ERR_HSM ; ehi->action |=ATA_EH_SOFTRESET ;ata_port_freeze (ap); -return ; - } - -/* hmmm... a spurious interupt */ - -/* if !NCQ, ignore. No modern ATA device has broken HSM -* implementation for non-NCQ commands. -*/ -if (!ap->sactive) -return ; - -if (status &PORT_IRQ_D2H_REG_FIS ) { -if (!pp->ncq_saw_d2h) -ata_port_printk (ap,KERN_INFO , -"D2H reg with I during NCQ, " -"this message won't be printed again\n" ); - pp->ncq_saw_d2h =1 ; - known_irq =1 ; - } - -if (status &PORT_IRQ_DMAS_FIS ) { -if (!pp->ncq_saw_dmas) -ata_port_printk (ap,KERN_INFO , -"DMAS FIS during NCQ, " -"this message won't be printed again\n" ); - pp->ncq_saw_dmas =1 ; - known_irq =1 ; - } - -if (status &PORT_IRQ_SDB_FIS ) { -const __le32 *f = pp->rx_fis +RX_FIS_SDB ; - -if (le32_to_cpu (f[1 ])) { -/* SDB FIS containing spurious completions -* might be dangerous, whine and fail commands -* with HSM violation. EH will turn off NCQ -* after several such failures. -*/ -ata_ehi_push_desc (ehi, -"spurious completions during NCQ " -"issue=0x%x SAct=0x%x FIS=%08x:%08x" , -readl (port_mmio +PORT_CMD_ISSUE ), -readl (port_mmio +PORT_SCR_ACT ), -le32_to_cpu (f[0 ]),le32_to_cpu (f[1 ])); - ehi->err_mask |=AC_ERR_HSM ; - ehi->action |=ATA_EH_SOFTRESET ; -ata_port_freeze (ap); - }else { -if (!pp->ncq_saw_sdb) -ata_port_printk (ap,KERN_INFO , -"spurious SDB FIS %08x:%08x during NCQ, " -"this message won't be printed again\n" , -le32_to_cpu (f[0 ]),le32_to_cpu (f[1 ])); - pp->ncq_saw_sdb =1 ; - } - known_irq =1 ; } - -if (!known_irq) -ata_port_printk (ap,KERN_INFO ,"spurious interrupt " -"(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n" , - status, ap->active_tag, ap->sactive); }static void ahci_irq_clear (struct ata_port *ap)
drivers/ata/libata-core.c +1 -16
@@ -3772,6 +3772,7 @@ static const struct ata_blacklist_entry/* Devices where NCQ should be avoided */ /* NCQ is slow */ { "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ }, + { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, /* http://thread.gmane.org/gmane.linux.ide/14907 */ { "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ },/* NCQ is broken */
@@ -3790,22 +3791,6 @@ static const struct ata_blacklist_entry { "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, }, { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, }, { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, }, - /* Drives which do spurious command completion */ - { "HTS541680J9SA00", "SB2IC7EP", ATA_HORKAGE_NONCQ, }, - { "HTS541612J9SA00", "SBDIC7JP", ATA_HORKAGE_NONCQ, }, - { "HDT722516DLA380", "V43OA96A", ATA_HORKAGE_NONCQ, }, - { "Hitachi HTS541616J9SA00", "SB4OC70P", ATA_HORKAGE_NONCQ, }, - { "Hitachi HTS542525K9SA00", "BBFOC31P", ATA_HORKAGE_NONCQ, }, - { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, - { "WDC WD3200AAJS-00RYA0", "12.01B01", ATA_HORKAGE_NONCQ, }, - { "FUJITSU MHV2080BH", "00840028", ATA_HORKAGE_NONCQ, }, - { "ST9120822AS", "3.CLF", ATA_HORKAGE_NONCQ, }, - { "ST9160821AS", "3.CLF", ATA_HORKAGE_NONCQ, }, - { "ST9160821AS", "3.ALD", ATA_HORKAGE_NONCQ, }, - { "ST9160821AS", "3.CCD", ATA_HORKAGE_NONCQ, }, - { "ST3160812AS", "3.ADJ", ATA_HORKAGE_NONCQ, }, - { "ST980813AS", "3.ADB", ATA_HORKAGE_NONCQ, }, - { "SAMSUNG HD401LJ", "ZZ100-15", ATA_HORKAGE_NONCQ, }, /* devices which puke on READ_NATIVE_MAX */ { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, },
Quoted 10 lines · Tejun Heo
Spurious NCQ completion detection implemented in ahci was incorrect. On AHCI receving and processing FISes and raising interrupts are not interlocked and spurious interrupts are expected.
For example, if an interrupt occurs while interrupt handler is running and the running interrupt handler handles the event the new IRQ indicated, after IRQ handler finishes, it will be executed again because IRQ pending bit is set by the new interrupt but there won't be anything to process.
Quoted 5 lines
Please read the following message for more information.
http://article.gmane.org/gmane.linux.ide/26012
This patch...
Is this already in Linus's tree? Is this for 2.6.23-stable, and/or older ones too?
thanks,
greg k-h
Quoted 11 lines · Greg KH
Quoted 10 lines · Tejun Heo
Spurious NCQ completion detection implemented in ahci was incorrect. On AHCI receving and processing FISes and raising interrupts are not interlocked and spurious interrupts are expected.
For example, if an interrupt occurs while interrupt handler is running and the running interrupt handler handles the event the new IRQ indicated, after IRQ handler finishes, it will be executed again because IRQ pending bit is set by the new interrupt but there won't be anything to process.
Quoted 8 lines
Quoted 5 lines
Please read the following message for more information.
http://article.gmane.org/gmane.linux.ide/26012
This patch...
Is this already in Linus's tree? Is this for 2.6.23-stable, and/or older ones too?
Yes, this is in Linus's tree and it's for 2.6.23-stable. 2.6.22 is affected too so it'll be a good idea to update 2.6.22 too. Kernels before 2.6.22 are fine.
Thanks.
Signature · 1 line
tejun
patch libata-kill-spurious-ncq-completion-detection.patch queued to -stable tree
In reply to Tejun HeoThis is a note to let you know that we have just queued up the patch titled
Subject: s [PATCH -stable] libata: kill spurious NCQ completion detection
to the 2.6.23-stable tree. Its filename is
libata-kill-spurious-ncq-completion-detection.patch
A git repo of this tree can be found at
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
Quoted 1 line
From [email protected] Fri Dec 7 16:26:06 2007
From: Tejun Heo <[email protected]>
Date: Sat, 08 Dec 2007 09:25:31 +0900
Subject: [stable] [PATCH -stable] libata: kill spurious NCQ completion detection
To: [email protected], IDE/ATA development list <[email protected]>
Cc: Michael Tokarev <[email protected]>, Jeff Garzik <[email protected]>, Diego Torres <[email protected]>
Message-ID: <[email protected]>
From: Tejun Heo <[email protected]>
patch 459ad68893a84fb0881e57919340b97edbbc3dc7 in mainline.
Spurious NCQ completion detection implemented in ahci was incorrect. On AHCI receving and processing FISes and raising interrupts are not interlocked and spurious interrupts are expected.
For example, if an interrupt occurs while interrupt handler is running and the running interrupt handler handles the event the new IRQ indicated, after IRQ handler finishes, it will be executed again because IRQ pending bit is set by the new interrupt but there won't be anything to process.
Please read the following message for more information.
http://article.gmane.org/gmane.linux.ide/26012
This patch...
* Removes all spurious IRQ whining from ahci. Spurious NCQ completion detection was completely wrong. Spurious D2H Register FIS taught us that some early drives send spurious D2H Register FIS with I bit set while NCQ commands are in progress but none of recent drives does that and even the ones which show such behavior can do NCQ fine.
* Kills all NCQ blacklist entries which were added because of spurious NCQ completions. I tracked down each commit and verified all removed ones are actually added because of spurious completions.
WD740ADFD-00NLR1 wasn't deleted but moved upward because the drive not only had spurious NCQ completions but also is slow on sequential data transfers if NCQ is enabled.
Maxtor 7V300F0 was added by 0e3dbc01d53940fe10e5a5cfec15ede3e929c918 from Alan Cox. I can only find evidences that the drive only had troubles with spuruious completions by searching the mailing list. This entry needs to be verified and removed if it doesn't have other NCQ related problems.
--- drivers/ata/ahci.c | 65 ---------------------------------------------- drivers/ata/libata-core.c | 17 ------------ 2 files changed, 2 insertions(+), 80 deletions(-)
drivers/ata/ahci.c +1 -64
@@ -1432,7 +1432,7 @@ static void ahci_port_intr(struct ata_postruct ata_eh_info *ehi = &ap->eh_info;struct ahci_port_priv *pp = ap->private_data;u32 status, qc_active; -int rc, known_irq =0 ; +int rc; status =readl (port_mmio +PORT_IRQ_STAT );writel (status, port_mmio +PORT_IRQ_STAT );
@@ -1448,74 +1448,11 @@ static void ahci_port_intr(struct ata_po qc_active =readl (port_mmio +PORT_CMD_ISSUE ); rc =ata_qc_complete_multiple (ap, qc_active,NULL ); -if (rc >0 ) -return ;if (rc <0 ) { ehi->err_mask |=AC_ERR_HSM ; ehi->action |=ATA_EH_SOFTRESET ;ata_port_freeze (ap); -return ; - } - -/* hmmm... a spurious interupt */ - -/* if !NCQ, ignore. No modern ATA device has broken HSM -* implementation for non-NCQ commands. -*/ -if (!ap->sactive) -return ; - -if (status &PORT_IRQ_D2H_REG_FIS ) { -if (!pp->ncq_saw_d2h) -ata_port_printk (ap,KERN_INFO , -"D2H reg with I during NCQ, " -"this message won't be printed again\n" ); - pp->ncq_saw_d2h =1 ; - known_irq =1 ; - } - -if (status &PORT_IRQ_DMAS_FIS ) { -if (!pp->ncq_saw_dmas) -ata_port_printk (ap,KERN_INFO , -"DMAS FIS during NCQ, " -"this message won't be printed again\n" ); - pp->ncq_saw_dmas =1 ; - known_irq =1 ; - } - -if (status &PORT_IRQ_SDB_FIS ) { -const __le32 *f = pp->rx_fis +RX_FIS_SDB ; - -if (le32_to_cpu (f[1 ])) { -/* SDB FIS containing spurious completions -* might be dangerous, whine and fail commands -* with HSM violation. EH will turn off NCQ -* after several such failures. -*/ -ata_ehi_push_desc (ehi, -"spurious completions during NCQ " -"issue=0x%x SAct=0x%x FIS=%08x:%08x" , -readl (port_mmio +PORT_CMD_ISSUE ), -readl (port_mmio +PORT_SCR_ACT ), -le32_to_cpu (f[0 ]),le32_to_cpu (f[1 ])); - ehi->err_mask |=AC_ERR_HSM ; - ehi->action |=ATA_EH_SOFTRESET ; -ata_port_freeze (ap); - }else { -if (!pp->ncq_saw_sdb) -ata_port_printk (ap,KERN_INFO , -"spurious SDB FIS %08x:%08x during NCQ, " -"this message won't be printed again\n" , -le32_to_cpu (f[0 ]),le32_to_cpu (f[1 ])); - pp->ncq_saw_sdb =1 ; - } - known_irq =1 ; } - -if (!known_irq) -ata_port_printk (ap,KERN_INFO ,"spurious interrupt " -"(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n" , - status, ap->active_tag, ap->sactive); }static void ahci_irq_clear (struct ata_port *ap)
drivers/ata/libata-core.c +1 -16
@@ -3772,6 +3772,7 @@ static const struct ata_blacklist_entry/* Devices where NCQ should be avoided */ /* NCQ is slow */ { "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ }, + { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, /* http://thread.gmane.org/gmane.linux.ide/14907 */ { "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ },/* NCQ is broken */
@@ -3790,22 +3791,6 @@ static const struct ata_blacklist_entry { "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, }, { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, }, { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, }, - /* Drives which do spurious command completion */ - { "HTS541680J9SA00", "SB2IC7EP", ATA_HORKAGE_NONCQ, }, - { "HTS541612J9SA00", "SBDIC7JP", ATA_HORKAGE_NONCQ, }, - { "HDT722516DLA380", "V43OA96A", ATA_HORKAGE_NONCQ, }, - { "Hitachi HTS541616J9SA00", "SB4OC70P", ATA_HORKAGE_NONCQ, }, - { "Hitachi HTS542525K9SA00", "BBFOC31P", ATA_HORKAGE_NONCQ, }, - { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, - { "WDC WD3200AAJS-00RYA0", "12.01B01", ATA_HORKAGE_NONCQ, }, - { "FUJITSU MHV2080BH", "00840028", ATA_HORKAGE_NONCQ, }, - { "ST9120822AS", "3.CLF", ATA_HORKAGE_NONCQ, }, - { "ST9160821AS", "3.CLF", ATA_HORKAGE_NONCQ, }, - { "ST9160821AS", "3.ALD", ATA_HORKAGE_NONCQ, }, - { "ST9160821AS", "3.CCD", ATA_HORKAGE_NONCQ, }, - { "ST3160812AS", "3.ADJ", ATA_HORKAGE_NONCQ, }, - { "ST980813AS", "3.ADB", ATA_HORKAGE_NONCQ, }, - { "SAMSUNG HD401LJ", "ZZ100-15", ATA_HORKAGE_NONCQ, }, /* devices which puke on READ_NATIVE_MAX */ { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, },
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.23/libata-kill-spurious-ncq-completion-detection.patch
patch libata-kill-spurious-ncq-completion-detection.patch queued to -stable tree
In reply to Tejun HeoThis is a note to let you know that we have just queued up the patch titled
Subject: s [PATCH -stable] libata: kill spurious NCQ completion detection
to the 2.6.22-stable tree. Its filename is
libata-kill-spurious-ncq-completion-detection.patch
A git repo of this tree can be found at
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
Quoted 1 line
From [email protected] Fri Dec 7 16:26:06 2007
From: Tejun Heo <[email protected]>
Date: Sat, 08 Dec 2007 09:25:31 +0900
Subject: [stable] [PATCH -stable] libata: kill spurious NCQ completion detection
To: [email protected], IDE/ATA development list <[email protected]>
Cc: Michael Tokarev <[email protected]>, Jeff Garzik <[email protected]>, Diego Torres <[email protected]>
Message-ID: <[email protected]>
From: Tejun Heo <[email protected]>
patch 459ad68893a84fb0881e57919340b97edbbc3dc7 in mainline.
Spurious NCQ completion detection implemented in ahci was incorrect. On AHCI receving and processing FISes and raising interrupts are not interlocked and spurious interrupts are expected.
For example, if an interrupt occurs while interrupt handler is running and the running interrupt handler handles the event the new IRQ indicated, after IRQ handler finishes, it will be executed again because IRQ pending bit is set by the new interrupt but there won't be anything to process.
Please read the following message for more information.
http://article.gmane.org/gmane.linux.ide/26012
This patch...
* Removes all spurious IRQ whining from ahci. Spurious NCQ completion detection was completely wrong. Spurious D2H Register FIS taught us that some early drives send spurious D2H Register FIS with I bit set while NCQ commands are in progress but none of recent drives does that and even the ones which show such behavior can do NCQ fine.
* Kills all NCQ blacklist entries which were added because of spurious NCQ completions. I tracked down each commit and verified all removed ones are actually added because of spurious completions.
WD740ADFD-00NLR1 wasn't deleted but moved upward because the drive not only had spurious NCQ completions but also is slow on sequential data transfers if NCQ is enabled.
Maxtor 7V300F0 was added by 0e3dbc01d53940fe10e5a5cfec15ede3e929c918 from Alan Cox. I can only find evidences that the drive only had troubles with spuruious completions by searching the mailing list. This entry needs to be verified and removed if it doesn't have other NCQ related problems.
--- drivers/ata/ahci.c | 65 ---------------------------------------------- drivers/ata/libata-core.c | 10 ------- 2 files changed, 2 insertions(+), 73 deletions(-)
drivers/ata/ahci.c +1 -64
@@ -1241,7 +1241,7 @@ static void ahci_host_intr(struct ata_postruct ata_eh_info *ehi = &ap->eh_info;struct ahci_port_priv *pp = ap->private_data;u32 status, qc_active; -int rc, known_irq =0 ; +int rc; status =readl (port_mmio +PORT_IRQ_STAT );writel (status, port_mmio +PORT_IRQ_STAT );
@@ -1257,74 +1257,11 @@ static void ahci_host_intr(struct ata_po qc_active =readl (port_mmio +PORT_CMD_ISSUE ); rc =ata_qc_complete_multiple (ap, qc_active,NULL ); -if (rc >0 ) -return ;if (rc <0 ) { ehi->err_mask |=AC_ERR_HSM ; ehi->action |=ATA_EH_SOFTRESET ;ata_port_freeze (ap); -return ; - } - -/* hmmm... a spurious interupt */ - -/* if !NCQ, ignore. No modern ATA device has broken HSM -* implementation for non-NCQ commands. -*/ -if (!ap->sactive) -return ; - -if (status &PORT_IRQ_D2H_REG_FIS ) { -if (!pp->ncq_saw_d2h) -ata_port_printk (ap,KERN_INFO , -"D2H reg with I during NCQ, " -"this message won't be printed again\n" ); - pp->ncq_saw_d2h =1 ; - known_irq =1 ; - } - -if (status &PORT_IRQ_DMAS_FIS ) { -if (!pp->ncq_saw_dmas) -ata_port_printk (ap,KERN_INFO , -"DMAS FIS during NCQ, " -"this message won't be printed again\n" ); - pp->ncq_saw_dmas =1 ; - known_irq =1 ; - } - -if (status &PORT_IRQ_SDB_FIS ) { -const __le32 *f = pp->rx_fis +RX_FIS_SDB ; - -if (le32_to_cpu (f[1 ])) { -/* SDB FIS containing spurious completions -* might be dangerous, whine and fail commands -* with HSM violation. EH will turn off NCQ -* after several such failures. -*/ -ata_ehi_push_desc (ehi, -"spurious completions during NCQ " -"issue=0x%x SAct=0x%x FIS=%08x:%08x" , -readl (port_mmio +PORT_CMD_ISSUE ), -readl (port_mmio +PORT_SCR_ACT ), -le32_to_cpu (f[0 ]),le32_to_cpu (f[1 ])); - ehi->err_mask |=AC_ERR_HSM ; - ehi->action |=ATA_EH_SOFTRESET ; -ata_port_freeze (ap); - }else { -if (!pp->ncq_saw_sdb) -ata_port_printk (ap,KERN_INFO , -"spurious SDB FIS %08x:%08x during NCQ, " -"this message won't be printed again\n" , -le32_to_cpu (f[0 ]),le32_to_cpu (f[1 ])); - pp->ncq_saw_sdb =1 ; - } - known_irq =1 ; } - -if (!known_irq) -ata_port_printk (ap,KERN_INFO ,"spurious interrupt " -"(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n" , - status, ap->active_tag, ap->sactive); }static void ahci_irq_clear (struct ata_port *ap)
drivers/ata/libata-core.c +1 -9
@@ -3785,6 +3785,7 @@ static const struct ata_blacklist_entry/* Devices where NCQ should be avoided */ /* NCQ is slow */ { "WDC WD740ADFD-00", NULL, ATA_HORKAGE_NONCQ }, + { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, /* http://thread.gmane.org/gmane.linux.ide/14907 */ { "FUJITSU MHT2060BH", NULL, ATA_HORKAGE_NONCQ },/* NCQ is broken */
@@ -3803,15 +3804,6 @@ static const struct ata_blacklist_entry { "HTS541060G9SA00", "MB3OC60D", ATA_HORKAGE_NONCQ, }, { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, }, { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, }, - /* Drives which do spurious command completion */ - { "HTS541680J9SA00", "SB2IC7EP", ATA_HORKAGE_NONCQ, }, - { "HTS541612J9SA00", "SBDIC7JP", ATA_HORKAGE_NONCQ, }, - { "Hitachi HTS541616J9SA00", "SB4OC70P", ATA_HORKAGE_NONCQ, }, - { "WDC WD740ADFD-00NLR1", NULL, ATA_HORKAGE_NONCQ, }, - { "FUJITSU MHV2080BH", "00840028", ATA_HORKAGE_NONCQ, }, - { "ST9160821AS", "3.CLF", ATA_HORKAGE_NONCQ, }, - { "ST3160812AS", "3.AD", ATA_HORKAGE_NONCQ, }, - { "SAMSUNG HD401LJ", "ZZ100-15", ATA_HORKAGE_NONCQ, }, /* End Marker */ { }
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.22/libata-kill-spurious-ncq-completion-detection.patch