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| author | Amelie Delaunay <amelie.delaunay@st.com> | 2017-01-16 09:57:38 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-01-23 00:47:15 +0100 |
| commit | a560c527638d78bc05d06585fef2d94b22b727b8 (patch) | |
| tree | cf2eff5660bbd6fc9456942aaccbece73d3c3599 /drivers/rtc/rtc-stm32.c | |
| parent | 5fa4086987506b2ab8c92f8f99f2295db9918856 (diff) | |
| download | lwn-a560c527638d78bc05d06585fef2d94b22b727b8.tar.gz lwn-a560c527638d78bc05d06585fef2d94b22b727b8.zip | |
rtc: stm32: use 0 instead of ~PWR_CR_DBP in regmap_update_bits
Using the ~ operator on a BIT() constant results in a large 'unsigned long'
constant that won't fit into an 'unsigned int' function argument on 64-bit
architectures, resulting in a harmless build warning in x86 allmodconfig:
drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_probe':
drivers/rtc/rtc-stm32.c:651:51: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
regmap_update_bits(rtc->dbp, PWR_CR, PWR_CR_DBP, ~PWR_CR_DBP);
As PWR_CR_DBP mask prevents other bits to be cleared, replace all
~PWR_CR_DBP by 0.
Fixes: 4e64350f42e2 ("rtc: add STM32 RTC driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/rtc-stm32.c')
| -rw-r--r-- | drivers/rtc/rtc-stm32.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c index 8c599f52124c..03c97c1a2140 100644 --- a/drivers/rtc/rtc-stm32.c +++ b/drivers/rtc/rtc-stm32.c @@ -648,7 +648,7 @@ static int stm32_rtc_probe(struct platform_device *pdev) err: clk_disable_unprepare(rtc->ck_rtc); - regmap_update_bits(rtc->dbp, PWR_CR, PWR_CR_DBP, ~PWR_CR_DBP); + regmap_update_bits(rtc->dbp, PWR_CR, PWR_CR_DBP, 0); device_init_wakeup(&pdev->dev, false); @@ -670,7 +670,7 @@ static int stm32_rtc_remove(struct platform_device *pdev) clk_disable_unprepare(rtc->ck_rtc); /* Enable backup domain write protection */ - regmap_update_bits(rtc->dbp, PWR_CR, PWR_CR_DBP, ~PWR_CR_DBP); + regmap_update_bits(rtc->dbp, PWR_CR, PWR_CR_DBP, 0); device_init_wakeup(&pdev->dev, false); |