From: Kangjie Lu <kjlu@umn.edu>
Date: Wed, 26 Dec 2018 02:55:37 +0000 (-0600)
Subject: net: (cpts) fix a missing check of clk_prepare
X-Git-Tag: v5.0-rc1~49^2~35
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=2d822f2dbab7f4c820f72eb8570aacf3f35855bd;p=linux-2.6-block.git

net: (cpts) fix a missing check of clk_prepare

clk_prepare() could fail, so let's check its status, and if it fails,
return its error code upstream.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c
index 054f78295d1d..2a9ba4acd7fa 100644
--- a/drivers/net/ethernet/ti/cpts.c
+++ b/drivers/net/ethernet/ti/cpts.c
@@ -590,7 +590,9 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs,
 		return ERR_CAST(cpts->refclk);
 	}
 
-	clk_prepare(cpts->refclk);
+	ret = clk_prepare(cpts->refclk);
+	if (ret)
+		return ERR_PTR(ret);
 
 	cpts->cc.read = cpts_systim_read;
 	cpts->cc.mask = CLOCKSOURCE_MASK(32);