tty: serial: xilinx_uartps: Do not check for 0 return after calling platform_get_irq()

Since commit a85a6c86c25b ("driver core: platform: Clarify that
IRQ 0 is invalid"), there is no possible for
platform_get_irq() to return 0. Use the return value
from platform_get_irq().

Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230803091712.596987-1-ruanjinjie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 20a751663ef9f4d1eae812372f056c5241656be8..2e5e86a00a77d73e5192f5f3d6805d006fa75e35 100644 (file)
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1562,8 +1562,8 @@ static int cdns_uart_probe(struct platform_device *pdev)
        }
 
        irq = platform_get_irq(pdev, 0);
-       if (irq <= 0) {
-               rc = -ENXIO;
+       if (irq < 0) {
+               rc = irq;
                goto err_out_clk_disable;
        }