On Wed, Jun 20, 2018 at 07:42:40PM +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Since commit 1455cf8dbfd0 ("driver core: emit uevents when
> device is bound to a driver") the kernel started emitting
> "bind" and "unbind" uevents which confuse the hid2hci
> udev rules.
>
> The symptoms on an affected machine (Dell E5400 in my case)
> include bluetooth devices not appearing and udev hogging
> the cpu as it's busy processing a constant stream of these
> "bind"+"unbind" uevents.
>
> Change the udev rules not do anything except for "add" and
> "change" events. This seems to cure my machine at least.
>
> v2: Don't mess up "change" (Zbyszek)
> Fix up the commit message a bit
Ping. Can someone push this?
>
> Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Cc: Marcel Holtmann <marcel@xxxxxxxxxxxx>
> Cc: Kay Sievers <kay.sievers@xxxxxxxx>
> Cc: Zbigniew Jędrzejewski-Szmek <zbyszek@xxxxxxxxx>
> Cc: systemd-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: linux-bluetooth@xxxxxxxxxxxxxxx
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> tools/hid2hci.rules | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/hid2hci.rules b/tools/hid2hci.rules
> index db6bb03d2ef3..5c7208af7a02 100644
> --- a/tools/hid2hci.rules
> +++ b/tools/hid2hci.rules
> @@ -1,6 +1,6 @@
> # do not edit this file, it will be overwritten on update
>
> -ACTION=="remove", GOTO="hid2hci_end"
> +ACTION!="add|change", GOTO="hid2hci_end"
> SUBSYSTEM!="usb*", GOTO="hid2hci_end"
>
> # Variety of Dell Bluetooth devices - match on a mouse device that is
> --
> 2.16.4
--
Ville Syrjälä
Intel
