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| author |   Luis R. Rodriguez <mcgrof@kernel.org> | 2018-03-10 06:14:52 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-20 09:28:47 +0100 |
| commit | 2cd7a1c6dcd33e7c1a82b254871230f29866d4e9 (patch) | |
| tree | a9d2464f9e707e108e0267ed8ff7afcf53aa8ace /drivers/base/firmware_loader/fallback.c | |
| parent | firmware: enable run time change of forcing fallback loader (diff) | |
| download | linux-dev-2cd7a1c6dcd33e7c1a82b254871230f29866d4e9.tar.xz linux-dev-2cd7a1c6dcd33e7c1a82b254871230f29866d4e9.zip | |
firmware: enable to force disable the fallback mechanism at run time
You currently need four different kernel builds to test the firmware
API fully. By adding a proc knob to force disable the fallback mechanism
completely we are able to reduce the amount of kernels you need built
to test the firmware API down to two.
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/firmware_loader/fallback.c')
| -rw-r--r-- | drivers/base/firmware_loader/fallback.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c index 45cc40933a47..d6838e7ec00c 100644 --- a/drivers/base/firmware_loader/fallback.c +++ b/drivers/base/firmware_loader/fallback.c @@ -643,6 +643,11 @@ static bool fw_force_sysfs_fallback(unsigned int opt_flags) static bool fw_run_sysfs_fallback(unsigned int opt_flags) { + if (fw_fallback_config.ignore_sysfs_fallback) { + pr_info_once("Ignoring firmware sysfs fallback due to debugfs knob\n"); + return false; + } + if ((opt_flags & FW_OPT_NOFALLBACK)) return false; |