linux-kernel - [PATCH v2 0/3] serial: core: fix up sysrq regressions

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Date:   Wed, 10 Jun 2020 17:22:29 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Jiri Slaby <jslaby@...e.com>,
        Dmitry Safonov <0x7f454c46@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...nel.org>
Subject: [PATCH v2 0/3] serial: core: fix up sysrq regressions

This series fixes a few regressions introduced by the recent sysrq
rework that went into 5.6.

The fix for the unnecessary per-character overhead probably could have
been marked for stable but I left that decision to the maintainers as it
is a bit intrusive (although mostly shuffling code around).

Johan

Changes in v2
 - inline uart_unlock_and_check_sysrq() along with the other helpers
   (restoring the interrupt state in a helper was never an issue)


Johan Hovold (3):
  Revert "serial: core: Refactor uart_unlock_and_check_sysrq()"
  serial: core: fix sysrq overhead regression
  serial: core: drop redundant sysrq checks

 drivers/tty/serial/serial_core.c |  96 +----------------------------
 include/linux/serial_core.h      | 102 +++++++++++++++++++++++++++++--
 2 files changed, 100 insertions(+), 98 deletions(-)

-- 
2.26.2