serial: uartlite: Fix uninitialized ret in debug uartlite

Endianness detection is checked against uninitialized ret variable.
Assign ret with read value from status register to fix this.

Fixes: 31a359f87eaa ("serial: uartlite: Add support to work with any endianness")
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c
index 236ab86..1453fb4 100644 (file)
--- a/drivers/serial/serial_xuartlite.c
+++ b/drivers/serial/serial_xuartlite.c
@@ -148,7 +148,7 @@ static inline void _debug_uart_init(void)
 
        uart_out32(&regs->control, 0);
        uart_out32(&regs->control, ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX);
-       uart_in32(&regs->status);
+       ret = uart_in32(&regs->status);
        /* Endianness detection */
        if ((ret & SR_TX_FIFO_EMPTY) != SR_TX_FIFO_EMPTY) {
                little_endian = true;