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powerpc/ioremap: warn on early use of ioremap()

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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 <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b4f03a68ee8e68773c8973d74ec35f9c82c72871.1568295907.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2019-09-12 13:49:44 +00:00 committed by Michael Ellerman
parent 265c3491c4
commit d538aadc27
2 changed files with 3 additions and 0 deletions
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1
arch/powerpc/mm/ioremap_32.c
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@ -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)

2
arch/powerpc/mm/ioremap_64.c
View File

@ -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;