Hello,
On Wed, Sep 24, 2014 at 10:32:13PM +0300, Mikko Perttunen wrote:
> On 09/24/2014 10:18 PM, Eduardo Valentin wrote:
> >
> > Mikko,
> >
> > On Thu, Aug 21, 2014 at 01:17:22PM +0300, Mikko Perttunen wrote:
> >> ...
> >> +
> >> +static int enable_tsensor(struct tegra_soctherm *tegra,
> >> + const struct tegra_tsensor *sensor,
> >> + struct tsensor_shared_calibration shared)
> >> +{
> >> + void * __iomem base = tegra->regs + sensor->base;
> >
> > I get sparse complaining about this declaration. For the sake of keeping
> > a clean static checks, can you please:
> > - void * __iomem base = tegra->regs + sensor->base;
> > + void __iomem * base = tegra->regs + sensor->base;
> >
>
> Sure.
Good.
>
> >
> > Can you also please check the remaining sparse errors?
> > CHECK drivers/thermal/tegra_soctherm.c
> > drivers/thermal/tegra_soctherm.c:260:43: warning: incorrect type in
> > initializer (different address spaces)
> > drivers/thermal/tegra_soctherm.c:260:43: expected void *[noderef]
> > <asn:2>base
> > drivers/thermal/tegra_soctherm.c:260:43: got void [noderef]
> > <asn:2>*
> > drivers/thermal/tegra_soctherm.c:271:9: warning: incorrect type in
> > argument 2 (different address spaces)
> > drivers/thermal/tegra_soctherm.c:271:9: expected void volatile
> > [noderef] <asn:2>*addr
> > drivers/thermal/tegra_soctherm.c:271:9: got void *
> > drivers/thermal/tegra_soctherm.c:279:9: warning: incorrect type in
> > argument 2 (different address spaces)
> > drivers/thermal/tegra_soctherm.c:279:9: expected void volatile
> > [noderef] <asn:2>*addr
> > drivers/thermal/tegra_soctherm.c:279:9: got void *
> > drivers/thermal/tegra_soctherm.c:281:9: warning: incorrect type in
> > argument 2 (different address spaces)
> > drivers/thermal/tegra_soctherm.c:281:9: expected void volatile
> > [noderef] <asn:2>*addr
> > drivers/thermal/tegra_soctherm.c:281:9: got void *
> > drivers/thermal/tegra_soctherm.c:347:25: warning: incorrect type in
> > argument 1 (different address spaces)
> > drivers/thermal/tegra_soctherm.c:347:25: expected void const *ptr
> > drivers/thermal/tegra_soctherm.c:347:25: got void [noderef]
> > <asn:2>*regs
> > drivers/thermal/tegra_soctherm.c:349:37: warning: incorrect type in
> > argument 1 (different address spaces)
> > drivers/thermal/tegra_soctherm.c:349:37: expected void const *ptr
> > drivers/thermal/tegra_soctherm.c:349:37: got void [noderef]
> > <asn:2>*regs
> > drivers/thermal/tegra_soctherm.c:271:9: warning: dereference of
> > noderef expression
> > drivers/thermal/tegra_soctherm.c:279:9: warning: dereference of
> > noderef expression
> > drivers/thermal/tegra_soctherm.c:281:9: warning: dereference of
> > noderef expression
> >
>
> Most of these seem to be caused by the above-mentioned swapping of
> __iomem and *. The ones on lines 347 and 349 are more peculiar, though.
> Apparently sparse doesn't like using IS_ERR and PTR_ERR on the void
> __iomem * pointer returned by devm_ioremap_resource. Looks like this has
> been discussed before (https://lkml.org/lkml/2013/6/17/216) and sparse
> should have been patched to ignore this situation, so I'm not sure why
> it's complaining about it. Anyway, there shouldn't be any issue here.
Sounds good to me.
>
> Mikko
>
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