Re: [PATCH v1 2/2] thunderbolt: Additional step for built-in module to power on

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Oct 23, 2017 at 05:46:18PM +0000, Mario.Limonciello@xxxxxxxx wrote:
> Mika,
> 
> I'm not CC on patch 2/2 of this series (so apologies this probably won't come in threaded right), but I 
> was curious and reviewed it from the web:
> http://www.spinics.net/lists/linux-doc/msg50034.html
> 
> Are you sure this is true?  When I saw this I tried it myself and didn't find the need for rescanning.
> 1) I compiled thunderbolt.ko into the kernel.
> 2) I compiled latest fwupd which contains both thunderbolt and  thunderboltpower plugins.
> 3) Ran /usr/lib/fwupd/fwupd -v
> 4) Looked for thunderbolt and thunderboltpower related messages.
> 
> I saw that:
> 1) Thunderbolt Power was forced to 1
> 2) shortly later the thunderbolt uevent showed and device did enumerate in fwupd successfully.
> 3) Thunderbolt power was set to 0
> 4) Thunderbolt remove event showed up soon (fwupd ignores the remove when forcepowered though).
> 
> Is there something else needed to reproduce your behavior that prompted this doc change?
> 
> If there is a situation like this, it makes sense for fwupd to also do the rescan, but I would like to be able
> to reproduce it.

You are right, there is no need to rescan (like I commented earlier to
this patch). It is handled by whatever hotplug mechanism the system is
using. PCs typically use BIOS assisted hotplug.

I actually talked to Andy about this and he missed
CONFIG_HOTPLUG_PCI_ACPI from his custom .config.
--
To unsubscribe from this list: send the line "unsubscribe linux-doc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux