Subject: [PATCH AUTOSEL 4.14 085/127] net: (cpts) fix a missing check of clk_prepare

From: Sasha Levin <[email-masked]>
Date: Fri, 22 Nov 2019 00:55:03 -0500

From: Kangjie Lu <[email-masked]>

[ Upstream commit 2d822f2dbab7f4c820f72eb8570aacf3f35855bd ]

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

Signed-off-by: Kangjie Lu <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 drivers/net/ethernet/ti/cpts.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c
index e7b76f6b4f67e..7d1281d812480 100644
--- a/drivers/net/ethernet/ti/cpts.c
+++ b/drivers/net/ethernet/ti/cpts.c
@@ -567,7 +567,9 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs,
 		return ERR_PTR(PTR_ERR(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);
-- 
2.20.1