Re: [PATCH v5 0/2] firmware_loader: allow firmware_class.path to take multiple paths

Jeff Layton
2026-03-23T14:45:04Z

Erm, obviously I forgot to update the subject line on the b4 cover
letter. Just pretend it says:

"firmware_loader: add search= module option for multi-path firmware
lookup"

Thanks,
Jeff

On Mon, 2026-03-23 at 10:39 -0400, Jeff Layton wrote:
> This is something Michal had asked for last year, and I just got around
> to implementing. This version also adds some selftests for this
> functionality.
>
> Signed-off-by: Jeff Layton <jlayton@kernel.org>
> ---
> Changes in v5:
> - Increase search= string length from 256 to 4096
> - Preprocess search= path when it's set rather than on every firmware load
> - Add selftests for search= functionality
> - Link to v4: https://lore.kernel.org/r/20260320-fw-path-v4-1-7547e2f0dc64@kernel.org
>
> Changes in v4:
> - Move search path to new search= option that is tried after path=
> - Link to v3: https://lore.kernel.org/r/20260318-fw-path-v3-1-a701a08bc025@kernel.org
>
> Changes in v3:
> - Allow '\' to escape a literal ':' or '\' in the string
> - Link to v2: https://lore.kernel.org/r/20260318-fw-path-v2-1-8a106eb91eb4@kernel.org
>
> Changes in v2:
> - switch to using ':' as path delimiter
> - Link to v1: https://lore.kernel.org/r/20260318-fw-path-v1-1-7884d9bf618f@kernel.org
>
> ---
> Jeff Layton (2):
> firmware_loader: add search= module option for multi-path firmware lookup
> selftests/firmware: add search path test for firmware_class.search=
>
> drivers/base/firmware_loader/main.c | 273 +++++++++++++++++++-------
> tools/testing/selftests/firmware/Makefile | 2 +-
> tools/testing/selftests/firmware/fw_search.sh | 222 +++++++++++++++++++++
> 3 files changed, 420 insertions(+), 77 deletions(-)
> ---
> base-commit: c369299895a591d96745d6492d4888259b004a9e
> change-id: 20260317-fw-path-a094c30259a5
>
> Best regards,

--
Jeff Layton <jlayton@kernel.org>