[PATCH AUTOSEL for 4.9 090/156] rtc: pcf8563: fix output clock rate

[alexander . levin]

From: Philipp Zabel <p.za...@pengutronix.de>

[ Upstream commit a3350f9c57ffad569c40f7320b89da1f3061c5bb ]

The pcf8563_clkout_recalc_rate function erroneously ignores the
frequency index read from the CLKO register and always returns
32768 Hz.

Fixes: a39a6405d5f9 ("rtc: pcf8563: add CLKOUT to common clock framework")
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.bell...@free-electrons.com>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
---
 drivers/rtc/rtc-pcf8563.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 1227ceab61ee..a4b8b603c807 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -422,7 +422,7 @@ static unsigned long pcf8563_clkout_recalc_rate(struct 
clk_hw *hw,
                return 0;
 
        buf &= PCF8563_REG_CLKO_F_MASK;
-       return clkout_rates[ret];
+       return clkout_rates[buf];
 }
 
 static long pcf8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
-- 
2.11.0