From: Baolin Wang <baolin.wang@linaro.org>
Date: Fri, 27 Sep 2019 07:10:45 +0000 (+0800)
Subject: hwspinlock: sprd: Check the return value of clk_prepare_enable()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3070c41643609c66d33de3577fc9d8ca15932513;p=linux.git

hwspinlock: sprd: Check the return value of clk_prepare_enable()

We must check the return value of clk_prepare_enable() to make sure the
hardware spinlock controller can be enabled successfully, otherwise we
should return error.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

diff --git a/drivers/hwspinlock/sprd_hwspinlock.c b/drivers/hwspinlock/sprd_hwspinlock.c
index 7a8534f77737b..d2104248013bc 100644
--- a/drivers/hwspinlock/sprd_hwspinlock.c
+++ b/drivers/hwspinlock/sprd_hwspinlock.c
@@ -105,7 +105,9 @@ static int sprd_hwspinlock_probe(struct platform_device *pdev)
 		return PTR_ERR(sprd_hwlock->clk);
 	}
 
-	clk_prepare_enable(sprd_hwlock->clk);
+	ret = clk_prepare_enable(sprd_hwlock->clk);
+	if (ret)
+		return ret;
 
 	/* set the hwspinlock to record user id to identify subsystems */
 	writel(HWSPINLOCK_USER_BITS, sprd_hwlock->base + HWSPINLOCK_RECCTRL);