This is a note to let you know that I've just added the patch titled serial: 8250: 8250_omap: Fix RX_LVL register offset to the 5.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: serial-8250-8250_omap-fix-rx_lvl-register-offset.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 79e9e30a9292a62d25ab75488d3886108db1eaad Mon Sep 17 00:00:00 2001 From: Nishanth Menon <nm@xxxxxx> Date: Fri, 3 Sep 2021 00:05:50 -0500 Subject: serial: 8250: 8250_omap: Fix RX_LVL register offset From: Nishanth Menon <nm@xxxxxx> commit 79e9e30a9292a62d25ab75488d3886108db1eaad upstream. Commit b67e830d38fa ("serial: 8250: 8250_omap: Fix possible interrupt storm on K3 SoCs") introduced fixup including a register read to RX_LVL, however, we should be using word offset than byte offset since our registers are on 4 byte boundary (port.regshift = 2) for 8250_omap. Fixes: b67e830d38fa ("serial: 8250: 8250_omap: Fix possible interrupt storm on K3 SoCs") Cc: stable <stable@xxxxxxxxxxxxxxx> Cc: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> Cc: Vignesh Raghavendra <vigneshr@xxxxxx> Signed-off-by: Nishanth Menon <nm@xxxxxx> Link: https://lore.kernel.org/r/20210903050550.29050-1-nm@xxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serial/8250/8250_omap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -106,7 +106,7 @@ #define UART_OMAP_EFR2_TIMEOUT_BEHAVE BIT(6) /* RX FIFO occupancy indicator */ -#define UART_OMAP_RX_LVL 0x64 +#define UART_OMAP_RX_LVL 0x19 struct omap8250_priv { int line; Patches currently in stable-queue which might be from nm@xxxxxx are queue-5.14/serial-8250-8250_omap-fix-rx_lvl-register-offset.patch