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powerpc/mm: properly set PAGE_KERNEL flags in ioremap()

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Set PAGE_KERNEL directly in the caller and do not rely on a
hack adding PAGE_KERNEL flags when _PAGE_PRESENT is not set.

As already done for PPC64, use pgprot_cache() helpers instead of
_PAGE_XXX flags in PPC32 ioremap() derived functions.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy
2018-10-09 13:51:43 +00:00
committed by Michael Ellerman
parent aa91796ec4
commit 56f3c1413f
7 changed files with 24 additions and 33 deletions
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6
arch/powerpc/kernel/isa-bridge.c
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@@ -110,14 +110,14 @@ static void pci_process_ISA_OF_ranges(struct device_node *isa_node,
size = 0x10000;
__ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE,
size, pgprot_val(pgprot_noncached(__pgprot(0))));
size, pgprot_val(pgprot_noncached(PAGE_KERNEL)));
return;
inval_range:
printk(KERN_ERR "no ISA IO ranges or unexpected isa range, "
"mapping 64k\n");
__ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE,
0x10000, pgprot_val(pgprot_noncached(__pgprot(0))));
0x10000, pgprot_val(pgprot_noncached(PAGE_KERNEL)));
}
@@ -253,7 +253,7 @@ void __init isa_bridge_init_non_pci(struct device_node *np)
*/
isa_io_base = ISA_IO_BASE;
__ioremap_at(pbase, (void *)ISA_IO_BASE,
size, pgprot_val(pgprot_noncached(__pgprot(0))));
size, pgprot_val(pgprot_noncached(PAGE_KERNEL)));
pr_debug("ISA: Non-PCI bridge is %pOF\n", np);
}