static inline void remap_area_pte()

in mm/ioremap.c [22:48]

• 26 lines of code
• 6 McCabe index (conditional complexity)

static inline void remap_area_pte(pte_t *pte, unsigned long address,
				unsigned long size, unsigned long phys_addr,
				unsigned long flags)
{
	unsigned long end;
	unsigned long pfn;
	pgprot_t pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | _PAGE_READ
				| _PAGE_WRITE | flags);

	address &= ~PMD_MASK;
	end = address + size;
	if (end > PMD_SIZE)
		end = PMD_SIZE;
	if (address >= end)
		BUG();
	pfn = PFN_DOWN(phys_addr);
	do {
		if (!pte_none(*pte)) {
			pr_err("remap_area_pte: page already exists\n");
			BUG();
		}
		set_pte(pte, pfn_pte(pfn, pgprot));
		address += PAGE_SIZE;
		pfn++;
		pte++;
	} while (address && (address < end));
}