[PATCH 5.15 579/731] rtc: st-lpc: Add missing clk_disable_unprepare in st_rtc_probe()

Greg Kroah-Hartman
2022-12-28T15:44:03Z

From: Gaosheng Cui <cuigaosheng1@huawei.com>

[ Upstream commit 5fb733d7bd6949e90028efdce8bd528c6ab7cf1e ]

The clk_disable_unprepare() should be called in the error handling
of clk_get_rate(), fix it.

Fixes: b5b2bdfc2893 ("rtc: st: Add new driver for ST's LPC RTC")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Link: https://lore.kernel.org/r/20221123014805.1993052-1-cuigaosheng1@huawei.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/rtc/rtc-st-lpc.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/rtc-st-lpc.c b/drivers/rtc/rtc-st-lpc.c
index bdb20f63254e..0f8e4231098e 100644
--- a/drivers/rtc/rtc-st-lpc.c
+++ b/drivers/rtc/rtc-st-lpc.c
@@ -238,6 +238,7 @@ static int st_rtc_probe(struct platform_device *pdev)

rtc->clkrate = clk_get_rate(rtc->clk);
if (!rtc->clkrate) {
+ clk_disable_unprepare(rtc->clk);
dev_err(&pdev->dev, "Unable to fetch clock rate\n");
return -EINVAL;
}
--
2.35.1