arm64: zynqmp: Check return value in zynqmp_mmio_rawwrite()

There should be return value check from zynqmp_mmio_read() in
zynqmp_mmio_rawwrite() to make sure that errors are propagated properly.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/arch/arm/cpu/armv8/zynqmp/cpu.c b/arch/arm/cpu/armv8/zynqmp/cpu.c
index e122be5..1279dc8 100644 (file)
--- a/arch/arm/cpu/armv8/zynqmp/cpu.c
+++ b/arch/arm/cpu/armv8/zynqmp/cpu.c
@@ -212,8 +212,12 @@ static int zynqmp_mmio_rawwrite(const u32 address,
 {
        u32 data;
        u32 value_local = value;
+       int ret;
+
+       ret = zynqmp_mmio_read(address, &data);
+       if (ret)
+               return ret;
 
-       zynqmp_mmio_read(address, &data);
        data &= ~mask;
        value_local &= mask;
        value_local |= data;