xilinx: zynqmp: Check return value from xilinx_pm_request()

xilinx_pm_request() can failed that's why also check return value.

Fixes: 050f10f103cd ("xilinx: zynqmp: remove chip_id function")
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index db3f597..e658245 100644 (file)
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -192,7 +192,11 @@ static char *zynqmp_get_silicon_idcode_name(void)
        u32 ret_payload[PAYLOAD_ARG_CNT];
        int ret;
 
-       xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0, ret_payload);
+       ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0, ret_payload);
+       if (ret) {
+               debug("%s: Getting chipid failed\n", __func__);
+               return "unknown";
+       }
 
        /*
         * Firmware returns: