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    Subject[RFT 0/7] firmware: enable caching of firmware for reboot optimization
    Date
    Some devices have optimizations in place which enable devices to retain the
    firmware on reboot. Some drivers check for this and if present on probe they
    don't request the firmware. This can be an issue if the system suspends after
    this given the firmware is still needed on resume. Since the request firmware
    call was not issued no cache was done.

    This series exposes a way for drivers to setup the cache, while also
    doing some minor sanity checks. This series only contains the delta from
    my last submission of patches for the firmware API for v4.17.

    Cantabile, please give these patches a spin and let me know if it fixes
    your reported issue. They depend on other pending patches I have in line
    waiting to be merged so the easiest I thing I think is for you to test my
    20180227-firmware-cache branch [0], based on Linus' tree. To get that
    tree, cd into your Linus git tree and do:

    git remote add mcgrof https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git
    git checkout -b 20180227-firmware-cache mcgrof/20180227-firmware-cache

    Please let me know if this resolves your issue and thanks for your report.

    Luis

    [0] https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=20180227-firmware-cache


    Luis R. Rodriguez (7):
    rename: _request_firmware_load() fw_load_sysfs_fallback()
    firmware: fix checking for return values for fw_add_devm_name()
    firmware: make fw_add_devm_name() return 0 if cache present
    firmware: add helper to check to see if fw cache is setup
    firmware: ensure the firmware cache is not used on incompatible calls
    firmware: add request_firmware_cache() to help with cache on reboot
    mt7601u: use request_firmware_cache() to address cache on reboot

    .../driver-api/firmware/fallback-mechanisms.rst | 2 +-
    .../driver-api/firmware/request_firmware.rst | 14 +++++
    drivers/base/firmware_fallback.c | 4 +-
    drivers/base/firmware_loader.c | 61 ++++++++++++++++++++--
    drivers/net/wireless/mediatek/mt7601u/mcu.c | 2 +-
    include/linux/firmware.h | 3 ++
    6 files changed, 77 insertions(+), 9 deletions(-)

    --
    2.16.2

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