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authorDavid Woodhouse <dwmw@amazon.co.uk>2017-04-12 15:25:56 +0300
committerBjorn Helgaas <bhelgaas@google.com>2017-04-18 21:02:26 +0300
commite854d8b2a82ef76521ad2bed68211fde0511d417 (patch)
treea6743218f245ac24fb5f6ca3cdba9fb20684a782 /arch/powerpc/include/asm/pci.h
parent11df19546fe4a6135cdae62e96a1e25b3fabf6ea (diff)
downloadlinux-e854d8b2a82ef76521ad2bed68211fde0511d417.tar.xz
PCI: Add arch_can_pci_mmap_io() on architectures which can mmap() I/O space
This is relatively esoteric, and knowing that we don't have it makes life easier in some cases rather than just an eventual -EINVAL from pci_mmap_page_range(). Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/powerpc/include/asm/pci.h')
-rw-r--r--arch/powerpc/include/asm/pci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
index 55887d171205..c8975dac535f 100644
--- a/arch/powerpc/include/asm/pci.h
+++ b/arch/powerpc/include/asm/pci.h
@@ -80,6 +80,7 @@ struct vm_area_struct;
/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() and it does WC */
#define HAVE_PCI_MMAP 1
+#define arch_can_pci_mmap_io() 1
#define arch_can_pci_mmap_wc() 1
extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,