This series fixes a few regressions introduced by the recent sysrq rework that went into 5.6.
The port unlock fix is tagged for stable, and the fix for the unnecessary per-character overhead probably could be as well although it is a bit more intrusive. Johan Johan Hovold (4): Revert "serial: core: Refactor uart_unlock_and_check_sysrq()" serial: core: fix broken sysrq port unlock serial: core: fix sysrq overhead regression serial: core: drop redundant sysrq checks drivers/tty/serial/serial_core.c | 96 +--------------------------- include/linux/serial_core.h | 105 +++++++++++++++++++++++++++++-- 2 files changed, 103 insertions(+), 98 deletions(-) -- 2.26.2
