Messages in this thread | | | From | Bjorn Helgaas <> | Date | Thu, 9 Feb 2012 08:42:59 -0800 | Subject | Re: [PATCH] ACPI: Fix logic for removing mappings in 'acpi_unmap' |
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On Thu, Feb 9, 2012 at 8:36 AM, Myron Stowe <myron.stowe@redhat.com> wrote: > From: Myron Stowe <mstowe@redhat.com> > > Make sure the removal of mappings uses the same logic that put the > mappings in place. > > Signed-off-by: Myron Stowe <myron.stowe@redhat.com> > --- > > drivers/acpi/osl.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c > index 412a1e0..5aef087 100644 > --- a/drivers/acpi/osl.c > +++ b/drivers/acpi/osl.c > @@ -347,7 +347,7 @@ static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr) > unsigned long pfn; > > pfn = pg_off >> PAGE_SHIFT; > - if (page_is_ram(pfn)) > + if (should_use_kmap(pfn)) > kunmap(pfn_to_page(pfn)); > else > iounmap(vaddr); >
Whatever happened to the question of why we have arch-specific ioremap() behavior? It's good to make map/unmap symmetric, but it'd be better to get rid of the ioremap/kmap hack.
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