Messages in this thread | | | Date | Fri, 26 Jul 2019 13:33:16 +0200 | From | Thomas Petazzoni <> | Subject | Re: [Regression] Missing device nodes for ETR, ETF and STM after CONFIG_UEVENT_HELPER=n |
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Hello,
On Fri, 26 Jul 2019 12:19:25 +0200 Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
> > This somehow is not mounting etr, etf, stm devices when uevent-helper is > > disabled. Anyways as Suzuki mentioned, using devtmpfs does fix the issue. > > Last I looked (many years ago) mdev requires uevent-helper in order for > it to work. I recommend that if you rely on mdev to keep that option > enabled, or to just use devtmpfs and udev :)
Since Busybox 1.31.0, mdev has gained a daemon mode. In this mode, mdev runs in the background, and receives uevent through a netlink socket. So there's been some changes in how Busybox mdev works in recent times.
Best regards,
Thomas -- Thomas Petazzoni, CTO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
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