Messages in this thread | | | Date | Thu, 25 Sep 2014 10:55:19 +0300 | From | Mikko Perttunen <> | Subject | Re: [PATCH v5 4/4] thermal: Add Tegra SOCTHERM thermal management driver |
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On 09/25/2014 08:59 AM, Thierry Reding wrote: > 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. >> >>> 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. > > If I apply the change suggested by Eduardo above then all of the above > warnings go away for me. That's with sparse 0.5.0. According to the > email thread above a patch for this was applied in 0.4.5.
Ah, good. I didn't actually run sparse, just checked by eye. Maybe I should have run it.
> > Thierry >
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