Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
If this is a must-to-do thing for Intel Panther Point platform, then we need to make sure it's called on power up and resume. Yes, I think moving the code below hc_init label should work and I think it's a better solution than your original patch. Yes it effects a lot of machines (Lenovo), I will send out a new seperate patch with the fix. Thanks Manoj Thanks, Andiry On Tue, 21 Aug 2012, Andiry Xu wrote: On Tue, Aug 21, 2012 at 12:06 PM, wrote: From: Manoj Iyer USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, "MWI active\n"); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + Strange. This should have been called during system power up, in quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get called during power up? Thanks, Andiry xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- Manoj Iyer Ubuntu/Canonical Hardware Enablement -- Manoj Iyer Ubuntu/Canonical Hardware Enablement -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
If this is a must-to-do thing for Intel Panther Point platform, then we need to make sure it's called on power up and resume. Yes, I think moving the code below hc_init label should work and I think it's a better solution than your original patch. Yes it effects a lot of machines (Lenovo), I will send out a new seperate patch with the fix. Thanks Manoj Thanks, Andiry On Tue, 21 Aug 2012, Andiry Xu wrote: On Tue, Aug 21, 2012 at 12:06 PM, manoj.i...@canonical.com wrote: From: Manoj Iyer manoj.i...@canonical.com USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer manoj.i...@canonical.com --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, MWI active\n); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + Strange. This should have been called during system power up, in quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get called during power up? Thanks, Andiry xhci_dbg(xhci, Finished xhci_pci_reinit\n); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- Manoj Iyer Ubuntu/Canonical Hardware Enablement -- Manoj Iyer Ubuntu/Canonical Hardware Enablement -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
On Wed, Aug 22, 2012 at 12:16 AM, Manoj Iyer wrote: > > Looks like in pci-quirks.c, we enter the do() while() loop, reach the end of > extended capabilities and goto hc_init: label, skipping the switch. Probably > moving the switch under the hc_init label might work? Currently we switch > unconditionally on resume, so we could do the same at powerup as well. > If this is a must-to-do thing for Intel Panther Point platform, then we need to make sure it's called on power up and resume. Yes, I think moving the code below hc_init label should work and I think it's a better solution than your original patch. Thanks, Andiry > > On Tue, 21 Aug 2012, Andiry Xu wrote: > >> On Tue, Aug 21, 2012 at 12:06 PM, wrote: >>> >>> From: Manoj Iyer >>> >>> USB 3.0 devices show up as high-speed devices on powerup, after an >>> s3 cycle they are correctly recognized as SuperSpeed. At powerup >>> unconditionally switch the port to xHCI like we do when we resume >>> from suspend. >>> >>> BugLink: http://bugs.launchpad.net/bugs/1000424 >>> >>> Signed-off-by: Manoj Iyer >>> --- >>> drivers/usb/host/xhci-pci.c |8 >>> 1 file changed, 8 insertions(+) >>> >>> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c >>> index 9bfd4ca11..5c8dbea 100644 >>> --- a/drivers/usb/host/xhci-pci.c >>> +++ b/drivers/usb/host/xhci-pci.c >>> @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, >>> struct pci_dev *pdev) >>> if (!pci_set_mwi(pdev)) >>> xhci_dbg(xhci, "MWI active\n"); >>> >>> + /* >>> +* USB SuperSpeed ports are recognized as HighSpeed ports on >>> powerup >>> +* unconditionally switch the ports to xHCI like we do when >>> resume >>> +* from suspend. >>> +*/ >>> + if (usb_is_intel_switchable_xhci(pdev)) >>> + usb_enable_xhci_ports(pdev); >>> + >> >> >> Strange. This should have been called during system power up, in >> quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get >> called during power up? >> >> Thanks, >> Andiry >> >>> xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); >>> return 0; >>> } >>> -- >>> 1.7.9.5 >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-usb" in >>> the body of a message to majord...@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> >> > > -- > > Manoj Iyer > Ubuntu/Canonical > Hardware Enablement > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
Looks like in pci-quirks.c, we enter the do() while() loop, reach the end of extended capabilities and goto hc_init: label, skipping the switch. Probably moving the switch under the hc_init label might work? Currently we switch unconditionally on resume, so we could do the same at powerup as well. On Tue, 21 Aug 2012, Andiry Xu wrote: On Tue, Aug 21, 2012 at 12:06 PM, wrote: From: Manoj Iyer USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, "MWI active\n"); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + Strange. This should have been called during system power up, in quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get called during power up? Thanks, Andiry xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- Manoj Iyer Ubuntu/Canonical Hardware Enablement -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
On Tue, Aug 21, 2012 at 12:06 PM, wrote: > From: Manoj Iyer > > USB 3.0 devices show up as high-speed devices on powerup, after an > s3 cycle they are correctly recognized as SuperSpeed. At powerup > unconditionally switch the port to xHCI like we do when we resume > from suspend. > > BugLink: http://bugs.launchpad.net/bugs/1000424 > > Signed-off-by: Manoj Iyer > --- > drivers/usb/host/xhci-pci.c |8 > 1 file changed, 8 insertions(+) > > diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c > index 9bfd4ca11..5c8dbea 100644 > --- a/drivers/usb/host/xhci-pci.c > +++ b/drivers/usb/host/xhci-pci.c > @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct > pci_dev *pdev) > if (!pci_set_mwi(pdev)) > xhci_dbg(xhci, "MWI active\n"); > > + /* > +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup > +* unconditionally switch the ports to xHCI like we do when resume > +* from suspend. > +*/ > + if (usb_is_intel_switchable_xhci(pdev)) > + usb_enable_xhci_ports(pdev); > + Strange. This should have been called during system power up, in quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get called during power up? Thanks, Andiry > xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); > return 0; > } > -- > 1.7.9.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
Hello. On 21-08-2012 8:06, manoj.i...@canonical.com wrote: From: Manoj Iyer USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, "MWI active\n"); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup Devices, not ports? +* unconditionally switch the ports to xHCI like we do when resume s/resume/resuming/ +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
On Wed, Aug 22, 2012 at 12:16 AM, Manoj Iyer manoj.i...@canonical.com wrote: Looks like in pci-quirks.c, we enter the do() while() loop, reach the end of extended capabilities and goto hc_init: label, skipping the switch. Probably moving the switch under the hc_init label might work? Currently we switch unconditionally on resume, so we could do the same at powerup as well. If this is a must-to-do thing for Intel Panther Point platform, then we need to make sure it's called on power up and resume. Yes, I think moving the code below hc_init label should work and I think it's a better solution than your original patch. Thanks, Andiry On Tue, 21 Aug 2012, Andiry Xu wrote: On Tue, Aug 21, 2012 at 12:06 PM, manoj.i...@canonical.com wrote: From: Manoj Iyer manoj.i...@canonical.com USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer manoj.i...@canonical.com --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, MWI active\n); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + Strange. This should have been called during system power up, in quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get called during power up? Thanks, Andiry xhci_dbg(xhci, Finished xhci_pci_reinit\n); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- Manoj Iyer Ubuntu/Canonical Hardware Enablement -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
Hello. On 21-08-2012 8:06, manoj.i...@canonical.com wrote: From: Manoj Iyer manoj.i...@canonical.com USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer manoj.i...@canonical.com --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, MWI active\n); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup Devices, not ports? +* unconditionally switch the ports to xHCI like we do when resume s/resume/resuming/ +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + WBR, Sergei -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
On Tue, Aug 21, 2012 at 12:06 PM, manoj.i...@canonical.com wrote: From: Manoj Iyer manoj.i...@canonical.com USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer manoj.i...@canonical.com --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, MWI active\n); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + Strange. This should have been called during system power up, in quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get called during power up? Thanks, Andiry xhci_dbg(xhci, Finished xhci_pci_reinit\n); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
Looks like in pci-quirks.c, we enter the do() while() loop, reach the end of extended capabilities and goto hc_init: label, skipping the switch. Probably moving the switch under the hc_init label might work? Currently we switch unconditionally on resume, so we could do the same at powerup as well. On Tue, 21 Aug 2012, Andiry Xu wrote: On Tue, Aug 21, 2012 at 12:06 PM, manoj.i...@canonical.com wrote: From: Manoj Iyer manoj.i...@canonical.com USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer manoj.i...@canonical.com --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, MWI active\n); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + Strange. This should have been called during system power up, in quirk_usb_handoff_xhci() of pci_quirks.c. Do you see that routine get called during power up? Thanks, Andiry xhci_dbg(xhci, Finished xhci_pci_reinit\n); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- Manoj Iyer Ubuntu/Canonical Hardware Enablement -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
From: Manoj Iyer USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, "MWI active\n"); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 1/1] xhci: Unconditionally switch ports to xHCI on powerup
From: Manoj Iyer manoj.i...@canonical.com USB 3.0 devices show up as high-speed devices on powerup, after an s3 cycle they are correctly recognized as SuperSpeed. At powerup unconditionally switch the port to xHCI like we do when we resume from suspend. BugLink: http://bugs.launchpad.net/bugs/1000424 Signed-off-by: Manoj Iyer manoj.i...@canonical.com --- drivers/usb/host/xhci-pci.c |8 1 file changed, 8 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 9bfd4ca11..5c8dbea 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -48,6 +48,14 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) if (!pci_set_mwi(pdev)) xhci_dbg(xhci, MWI active\n); + /* +* USB SuperSpeed ports are recognized as HighSpeed ports on powerup +* unconditionally switch the ports to xHCI like we do when resume +* from suspend. +*/ + if (usb_is_intel_switchable_xhci(pdev)) + usb_enable_xhci_ports(pdev); + xhci_dbg(xhci, Finished xhci_pci_reinit\n); return 0; } -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
