[PATCH v3 27/27] devres: kill devm_ioremap_nocache
xieyisheng1 at huawei.com
Mon Dec 25 01:43:40 UTC 2017
On 2017/12/23 21:45, Greg KH wrote:
> On Sat, Dec 23, 2017 at 07:02:59PM +0800, Yisheng Xie wrote:
>> --- a/lib/devres.c
>> +++ b/lib/devres.c
>> @@ -44,35 +44,6 @@ void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
>> - * devm_ioremap_nocache - Managed ioremap_nocache()
>> - * @dev: Generic device to remap IO address for
>> - * @offset: Resource address to map
>> - * @size: Size of map
>> - *
>> - * Managed ioremap_nocache(). Map is automatically unmapped on driver
>> - * detach.
>> - */
>> -void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
>> - resource_size_t size)
>> - void __iomem **ptr, *addr;
>> - ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
>> - if (!ptr)
>> - return NULL;
>> - addr = ioremap_nocache(offset, size);
> Wait, devm_ioremap() calls ioremap(), not ioremap_nocache(), are you
> _SURE_ that these are all identical? For all arches? If so, then
> ioremap_nocache() can also be removed, right?
Yeah, As Christophe pointed out, that 4 archs do not have the same function.
But I do not why they do not want do the same thing. Driver may no know about
> In my quick glance, I don't think you can do this series at all :(
Yes, maybe should take Christophe suggestion and use a bool or enum to distinguish them?
> greg k-h
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