Messages in this thread | | | From | Andy Shevchenko <> | Date | Sun, 11 Apr 2021 21:07:22 +0300 | Subject | Re: [PATCH v4 2/2] iio: temperature: add driver support for ti tmp117 |
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On Sun, Apr 11, 2021 at 5:53 PM Jonathan Cameron <jic23@kernel.org> wrote: > > On Wed, 7 Apr 2021 23:51:47 +0530 > Puranjay Mohan <puranjay12@gmail.com> wrote: > > > TMP117 is a Digital temperature sensor with integrated Non-Volatile memory. > > Add support for tmp117 driver in iio subsystem.
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> > + off = clamp(val, S16_MIN, S16_MAX); > > With a C=1 W=1 build (sparse an lots of warnings) this causes problems because > the S16_MIN and S16_MAX are as you might imagine s16 values whereas val is > an int. I've added casts to force S16_MIN and S16_MAX to ints as well.
Good point, but better is to use clamp_t(s16, ...) rather than explicit casting. I always consider explicit casting in C (and esp. in Linux kernel) is a red flag. Should be really rarely needed.
> > + if (off == data->calibbias) > > + return 0;
-- With Best Regards, Andy Shevchenko
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