On Tue, 15 Feb 2022 23:27:46 +0100
Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> wrote:
> Hello,
>
> On 17/01/2022 17:56:24-0500, Hugo Villeneuve wrote:
> > From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>
> >
> > If PCF2127 device is absent from the I2C bus, or if there is a
> > communication problem, disabling POR0 may fail silently and we
> > still continue with probing the device. In that case, abort probe
> > operation and display an error message.
> >
> > Signed-off-by: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>
> > ---
> > drivers/rtc/rtc-pcf2127.c | 6 +++++-
> > 1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
> > index 81a5b1f2e68c..e6d0838ccfe3 100644
> > --- a/drivers/rtc/rtc-pcf2127.c
> > +++ b/drivers/rtc/rtc-pcf2127.c
> > @@ -690,8 +690,12 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
> > * The "Power-On Reset Override" facility prevents the RTC to do a reset
> > * after power on. For normal operation the PORO must be disabled.
> > */
> > - regmap_clear_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
> > + ret = regmap_clear_bits(pcf2127->regmap, PCF2127_REG_CTRL1,
> > PCF2127_BIT_CTRL1_POR_OVRD);
> > + if (ret < 0) {
> > + dev_err(dev, "PORO disabling failed\n");
>
> As discussed on the other patches, please do not add a message here.
I forgot to resend that patch without the message. I will do it soon.
Hugo.
> > + return ret;
> > + }
> >
> > ret = regmap_read(pcf2127->regmap, PCF2127_REG_CLKOUT, &val);
> > if (ret < 0)
> > --
> > 2.30.2
> >
>
> --
> Alexandre Belloni, co-owner and COO, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com
--
Hugo Villeneuve <hugo@xxxxxxxxxxx>
