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 <[email protected]> Signed-off-by: Bjorn Andersson <[email protected]>
eguchi1904 · Oct 5, 2019 · 3070c41 · 3070c41
1 parent 74cfa95
commit 3070c41
Showing 1 changed file with 3 additions and 1 deletion.
diff --git 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);