Recently we found the fifo_read() and fifo_write() are broken in our
5.15 kernel after rebase to the latest 5.15.y, the 5.15.y integrated
the commit e635f652696e ("serial: sc16is7xx: convert from _raw_ to
_noinc_ regmap functions for FIFO"), but it forgot to integrate a
prerequisite commit 3837a0379533 ("serial: sc16is7xx: improve regmap
debugfs by using one regmap per port").
And about the prerequisite commit, there are also 4 commits to fix it,
So in total, I backported 5 patches to 5.15.y to fix this regression.
0002-xxx and 0004-xxx could be cleanly applied to 5.15.y, the remaining
3 patches need to resolve some conflict.
Hugo Villeneuve (5):
serial: sc16is7xx: improve regmap debugfs by using one regmap per port
serial: sc16is7xx: remove wasteful static buffer in
sc16is7xx_regmap_name()
serial: sc16is7xx: remove global regmap from struct sc16is7xx_port
serial: sc16is7xx: remove unused line structure member
serial: sc16is7xx: change EFR lock to operate on each channels
drivers/tty/serial/sc16is7xx.c | 185 +++++++++++++++++++--------------
1 file changed, 107 insertions(+), 78 deletions(-)
--
2.34.1
