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serial: 8250: 8250_omap: Fix RX_LVL register offset 

Commit b67e830d38 ("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: b67e830d38 ("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>
This commit is contained in:
Nishanth Menon 2021-09-03 00:05:50 -05:00 committed by Greg Kroah-Hartman
parent 6880fa6c56
commit 79e9e30a92
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/8250/8250_omap.c
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@ -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;