Re: [PATCH] firmware loader: allow disabling of udev as firmware loader

From: Tom Gundersen
Date: Mon Jun 09 2014 - 09:53:39 EST


Hi Balaji,

On Mon, Jun 9, 2014 at 3:26 PM, <B_B_Singh@xxxxxxxx> wrote:
> The existing BIOS-DUPâs will not work on latest kernel, which has
> CONFIG_FW_LOADER_USER_HELPER=n configured in Kernel config by default which
> is not expected by the dell_rbu.
>
>
>
> We have made a changes in BIOS-Dell Update Package so that BIOS-DUP will
> pick the payload from the /lib/firmware/ path & update the BIOS even when
> CONFIG_FW_LOADER_USER_HELPER=n is configured .
>
>
>
> We have tested this patch
> http://www.spinics.net/lists/kernel/msg1755247.html with latest BIOS Dell
> Update Package (which has new implementation for the BIOS update i.e,
> copying the BIOS payload in /lib/firmware path & dell_rbu picks the payload
> from the same path) & with stable upstream kernel-3.14.5 & we donât
> see any negative effects/errors for dell_rbu.

Thanks for testing! May I ask if the dell_rbu still works with my
patch and CONFIG_FW_LOADER_USER_HELPER=n with the old userspace? The
intention was that you should not need to change anything in userspace
at all.

By the way, there is now a new version of this patch:
<https://lkml.org/lkml/2014/6/4/327>, which should allow your (old or
new userspace) Dell RBU to work with FW_LOADER_USER_HELPER_FALLBACK=n,
so maybe it would be best to test that instead.

Cheers,

Tom
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