On Wed, Mar 14, 2018 at 12:00 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Sat, Mar 10, 2018 at 06:14:52AM -0800, Luis R. Rodriguez wrote: >> 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@xxxxxxxxxxxx> >> Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxx> >> --- >> drivers/base/firmware_loader/fallback.c | 5 +++++ >> drivers/base/firmware_loader/fallback.h | 4 ++++ >> drivers/base/firmware_loader/fallback_table.c | 9 +++++++++ >> 3 files changed, 18 insertions(+) >> >> 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"); > > s/debugfs/sysctl/ right? Indeed. Will respin with the other space fix. As for the other changes let me know if you have further feedback or if I should just keep them as-is. Luis