Messages in this thread | | | Date | Thu, 25 Sep 2014 16:22:26 +0200 | Subject | Re: linux-stable: backport usb related commit to 3.10 and 3.12? | From | Frans Klaver <> |
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On Thu, Sep 25, 2014 at 4:20 PM, Frans Klaver <fransklaver@gmail.com> wrote: > On Sat, Aug 23, 2014 at 1:19 PM, Schrey <debian-kernel@schreyben.de> wrote: >> Greetings. >> >> On an administered server, I noticed that there's a constant load >> around 0.70 when running kernels 3.10 and 3.12, even if >> the system is doing nothing, and in single user mode. >> Culprit seems to be the process 'khubd'. >> No such effect when running kernels 3.4 or 3.14. >> >> I reverse bisected linux-stable and found that the following commit >> fixes it for me, for both kernel 3.10 and 3.12: >> >> [08d1dec6f4054e3613f32051d9b149d4203ce0d2] usb:hub set hub->change_bits when >> over-current happens >> >> >> Could that commit be backported to the stable 3.10 and 3.12 series? >> >> (Disclaimer: I'm not a programmer, but I'd be happy to help with any testing >> involved) >> >> Regards >> Ingmar >> >> -------------------------------------------------------------------------- >> >> $ git diff ac5166bcdb43889a5bd837f5076b78049e1f8bca >> 08d1dec6f4054e3613f32051d9b149d4203ce0d2 >> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c >> index c1422a0..babba88 100644 >> --- a/drivers/usb/core/hub.c >> +++ b/drivers/usb/core/hub.c >> @@ -1147,7 +1147,8 @@ static void hub_activate(struct usb_hub *hub, enum >> hub_activation_type type) >> /* Tell khubd to disconnect the device or >> * check for a new connection >> */ >> - if (udev || (portstatus & USB_PORT_STAT_CONNECTION)) >> + if (udev || (portstatus & USB_PORT_STAT_CONNECTION) >> || >> + (portstatus & USB_PORT_STAT_OVERCURRENT)) >> set_bit(port1, hub->change_bits); >> >> } else if (portstatus & USB_PORT_STAT_ENABLE) { >> > > I think this could be eligible for backporting. I
I was going to say: It seems to tick the boxes in Documentation/stable_kernel_rules.txt.
But then gmail thought it would be a good idea to send out the e-mail.
Frans
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