net: macb: Fix clk API usage for RISC-V systems

Don't fail in macb_enable_clk() if clk_enable() returns
-ENOSYS because we get -ENOSYS for fixed-rate clocks.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index c9ee222..0254e21 100644 (file)
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -1061,14 +1061,13 @@ static int macb_enable_clk(struct udevice *dev)
                return -EINVAL;
 
        /*
-        * Zynq clock driver didn't support for enable or disable
-        * clock. Hence, clk_enable() didn't apply for Zynq
+        * If clock driver didn't support enable or disable then
+        * we get -ENOSYS from clk_enable(). To handle this, we
+        * don't fail for ret == -ENOSYS.
         */
-#ifndef CONFIG_MACB_ZYNQ
        ret = clk_enable(&clk);
-       if (ret)
+       if (ret && ret != -ENOSYS)
                return ret;
-#endif
 
        clk_rate = clk_get_rate(&clk);
        if (!clk_rate)