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[POWERPC] Make pci_iounmap actually unmap things 

This patch uses the newly added functions for testing if an address is
an ISA or PCI IO port to properly unmap things in pci_iounmap that
aren't such ports.  Without that, drivers using the iomap API will never
actually unmap resources, which on IBM server machines will prevent
hot-unplug of the corresponding HW adapters.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
hifive-unleashed-5.1
Benjamin Herrenschmidt 2007-07-26 14:07:13 +10:00 committed by Paul Mackerras
parent 6dfbde2091
commit 50747cb818
1 changed files with 7 additions and 1 deletions
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8
arch/powerpc/kernel/iomap.c
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@ -7,6 +7,7 @@
#include <linux/pci.h>
#include <linux/mm.h>
#include <asm/io.h>
#include <asm/pci-bridge.h>
/*
* Here comes the ppc64 implementation of the IOMAP
@ -136,7 +137,12 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
{
/* Nothing to do */
if (isa_vaddr_is_ioport(addr))
return;
if (pcibios_vaddr_is_ioport(addr))
return;
iounmap(addr);
}
EXPORT_SYMBOL(pci_iomap);
EXPORT_SYMBOL(pci_iounmap);