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

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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>
This commit is contained in:
Baolin Wang 2019-09-27 15:10:45 +08:00 committed by Bjorn Andersson
parent 74cfa956cb
commit 3070c41643
1 changed files with 3 additions and 1 deletions
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4
drivers/hwspinlock/sprd_hwspinlock.c
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@ -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);