Messages in this thread | | | Date | Mon, 7 Nov 2022 20:45:00 +0530 | From | Deepak R Varma <> | Subject | Re: [PATCH] staging: iio: meter: use min() for comparison and assignment |
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On Mon, Nov 07, 2022 at 04:08:31PM +0300, Dan Carpenter wrote: > On Mon, Nov 07, 2022 at 09:40:00AM +0530, Deepak R Varma wrote: > > Simplify code by using recommended min helper macro for logical > > evaluation and value assignment. This issue is identified by > > coccicheck using the minmax.cocci file. > > > > Signed-off-by: Deepak R Varma <drv@mailo.com> > > --- > > drivers/staging/iio/meter/ade7854-i2c.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/staging/iio/meter/ade7854-i2c.c b/drivers/staging/iio/meter/ade7854-i2c.c > > index a9a06e8dda51..a6ce7b24cc8f 100644 > > --- a/drivers/staging/iio/meter/ade7854-i2c.c > > +++ b/drivers/staging/iio/meter/ade7854-i2c.c > > @@ -61,7 +61,7 @@ static int ade7854_i2c_write_reg(struct device *dev, > > unlock: > > mutex_unlock(&st->buf_lock); > > > > - return ret < 0 ? ret : 0; > > + return min(ret, 0); > > The original code is better. > > If it's a failure return the error code. If it's not return zero. > > You can only compare apples to apples. min() makes sense if you're > talking about two lengths. But here if ret is negative that's an error > code. If it's positive that's the number of bytes. If the error > code is less than the number of bytes then return that? What??? It > makes no sense.
Thanks for your view point. I agree.
> > In terms of run time, this patch is fine but in terms of reading the > code using min() makes it less readable.
Okay, The proposal does not make much difference, so will leave the original line as is.
Thank you, ./drv
> > regards, > dan carpenter >
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