Re: [PATCH v2 3/3] i2c: mpc: implement erratum A-004447 workaround
From: Andy Shevchenko
Date: Fri May 07 2021 - 11:37:17 EST
On Fri, May 7, 2021 at 5:52 PM Joakim Tjernlund
<Joakim.Tjernlund@xxxxxxxxxxxx> wrote:
> On Fri, 2021-05-07 at 14:46 +0300, Andy Shevchenko wrote:
> > On Fri, May 7, 2021 at 3:40 AM Chris Packham
> > <chris.packham@xxxxxxxxxxxxxxxxxxx> wrote:
...
> > So, now you may shrink it even further, i.e.
> >
> > void __iomem *sr = i2c->base + MPC_I2C_SR;
> > u8 val;
> >
> > return readb_poll_timeout(sr, val, val & mask, 0, 100);
> >
>
> val looks uninitialised before use?
Nope.
Thinking about naming, perhaps
void __iomem *addr = i2c->base + MPC_I2C_SR;
u8 sr; // or leave as val?
return readb_poll_timeout(addr, sr, sr & mask, 0, 100);
would be more clear.
--
With Best Regards,
Andy Shevchenko