From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Mon, 12 Jun 2017 11:15:14 +0000 (+0530)
Subject: usb: host: ehci-exynos: Handle return value of clk_prepare_enable
X-Git-Tag: v4.13-rc1~185^2~53
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=264ffb194a92df256b604d649faadfbd23a054e2;p=karo-tx-linux.git

usb: host: ehci-exynos: Handle return value of clk_prepare_enable

clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 7a603f66a9bc..26b641100639 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -279,7 +279,9 @@ static int exynos_ehci_resume(struct device *dev)
 	struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd);
 	int ret;
 
-	clk_prepare_enable(exynos_ehci->clk);
+	ret = clk_prepare_enable(exynos_ehci->clk);
+	if (ret)
+		return ret;
 
 	ret = exynos_ehci_phy_enable(dev);
 	if (ret) {