From: Nishanth Menon nm@ti.com
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@vger.kernel.org Cc: Jan Kiszka jan.kiszka@siemens.com Cc: Vignesh Raghavendra vigneshr@ti.com Signed-off-by: Nishanth Menon nm@ti.com Link: https://lore.kernel.org/r/20210903050550.29050-1-nm@ti.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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;