2017-11-11 0:14 GMT+08:00 Arnd Bergmann [off-list ref]:

Could you move ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt
out of that #ifdef, or would that break other architectures?

It seems ok. I just tried arm64, x86 and nds32.

#endif /* CONFIG_MMU */
#ifndef ioremap_nocache
void __iomem *ioremap(phys_addr_t phys_addr, size_t size);
#define ioremap_nocache ioremap_nocache
static inline void __iomem *ioremap_nocache(phys_addr_t offset, size_t size)
{
        return ioremap(offset, size);
}
#endif

#ifndef ioremap_uc
#define ioremap_uc ioremap_uc
static inline void __iomem *ioremap_uc(phys_addr_t offset, size_t size)
{
        return ioremap_nocache(offset, size);
}
#endif

#ifndef ioremap_wc
#define ioremap_wc ioremap_wc
static inline void __iomem *ioremap_wc(phys_addr_t offset, size_t size)
{
        return ioremap_nocache(offset, size);
}
#endif

#ifndef ioremap_wt
#define ioremap_wt ioremap_wt
static inline void __iomem *ioremap_wt(phys_addr_t offset, size_t size)
{
        return ioremap_nocache(offset, size);
}
#endif