From: Anup Patel <Anup.Patel@wdc.com>
Date: Mon, 25 Feb 2019 08:14:36 +0000 (+0000)
Subject: net: macb: Fix clk API usage for RISC-V systems
X-Git-Tag: v2019.04-rc3~9^2~9
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=2e242f5f43ed9945d4b9005672b654d49360e43a;p=oweals%2Fu-boot.git

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 c9ee22279a..0254e211e6 100644
--- 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)