Alchemy PCMCIA IO lies outside the 32bit address space and needs to
be ioremapped to be accessible. The resulting address is
then fed as IO-port base to all PCMCIA client drivers attached
to a particular socket. pata_pcmcia does devm_ioport_map() on
the port address, which returns errors because MIPS' ioport_map()
implementation rejects incoming port addresses which are not
within the 0..64k window. Other embedded architectures don't
bother with a check like this; this patch brings MIPS in line
and in turn makes pata_pcmcia work on all my Alchemy systems
(and doesn't break PCI).
Signed-off-by: Manuel Lauss <manuel.lauss@xxxxxxxxxxxxxx>
---
arch/mips/lib/iomap.c | 3 ---
1 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/arch/mips/lib/iomap.c b/arch/mips/lib/iomap.c
index e3acb2d..5139fa6 100644
--- a/arch/mips/lib/iomap.c
+++ b/arch/mips/lib/iomap.c
@@ -210,9 +210,6 @@ static void __iomem *ioport_map_legacy(unsigned long port, unsigned int nr)
void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
- if (port > PIO_MASK)
- return NULL;
-
return ioport_map_legacy(port, nr);
}
--
1.7.7.1
