[PATCH v1 4/4] powerpc/ioremap: warn on early use of ioremap()
From: Christophe Leroy <hidden>
Date: 2019-09-12 13:49:50
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Powerpc now has EARLY_IOREMAP. Next step is to convert all early users of ioremap() to early_ioremap(). Add a warning to help locate those users. Signed-off-by: Christophe Leroy <redacted> --- arch/powerpc/mm/ioremap_32.c | 1 + arch/powerpc/mm/ioremap_64.c | 2 ++ 2 files changed, 3 insertions(+)
diff --git a/arch/powerpc/mm/ioremap_32.c b/arch/powerpc/mm/ioremap_32.c
index f36121f25243..743e11384dea 100644
--- a/arch/powerpc/mm/ioremap_32.c
+++ b/arch/powerpc/mm/ioremap_32.c@@ -68,6 +68,7 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, pgprot_t prot, void *call /* * Should check if it is a candidate for a BAT mapping */ + pr_warn("ioremap() called early from %pS. Use early_ioremap() instead\n", caller); err = early_ioremap_range(ioremap_bot - size, p, size, prot); if (err)
diff --git a/arch/powerpc/mm/ioremap_64.c b/arch/powerpc/mm/ioremap_64.c
index fd29e51700cd..50a99d9684f7 100644
--- a/arch/powerpc/mm/ioremap_64.c
+++ b/arch/powerpc/mm/ioremap_64.c@@ -81,6 +81,8 @@ void __iomem *__ioremap_caller(phys_addr_t addr, unsigned long size, if (slab_is_available()) return do_ioremap(paligned, offset, size, prot, caller); + pr_warn("ioremap() called early from %pS. Use early_ioremap() instead\n", caller); + err = early_ioremap_range(ioremap_bot, paligned, size, prot); if (err) return NULL;
--
2.13.3