From 163918fc5741d755cf9d477ebfcb761f09b82982 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 20 Aug 2019 14:07:20 +0000 Subject: powerpc/mm: split out early ioremap path. ioremap does things differently depending on whether SLAB is available or not at different levels. Try to separate the early path from the beginning. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/3acd2dbe04b04f111475e7a59f2b6f2ab9b95ab6.1566309263.git.christophe.leroy@c-s.fr --- arch/powerpc/mm/ioremap_32.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'arch/powerpc/mm/ioremap_32.c') diff --git a/arch/powerpc/mm/ioremap_32.c b/arch/powerpc/mm/ioremap_32.c index fcf343dbf2bf..f36121f25243 100644 --- a/arch/powerpc/mm/ioremap_32.c +++ b/arch/powerpc/mm/ioremap_32.c @@ -60,24 +60,21 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, pgprot_t prot, void *call */ v = p_block_mapped(p); if (v) - goto out; + return (void __iomem *)v + offset; - if (slab_is_available()) { + if (slab_is_available()) return do_ioremap(p, offset, size, prot, caller); - } else { - v = (ioremap_bot -= size); - } /* * Should check if it is a candidate for a BAT mapping */ - err = ioremap_range((unsigned long)v, p, size, prot); + err = early_ioremap_range(ioremap_bot - size, p, size, prot); if (err) return NULL; + ioremap_bot -= size; -out: - return (void __iomem *)(v + ((unsigned long)addr & ~PAGE_MASK)); + return (void __iomem *)ioremap_bot + offset; } void iounmap(volatile void __iomem *addr) -- cgit v1.2.3