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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/xtensa
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/xtensa')
-rw-r--r--arch/xtensa/include/asm/pci.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
index bb5510b28754..e4f366a488d3 100644
--- a/arch/xtensa/include/asm/pci.h
+++ b/arch/xtensa/include/asm/pci.h
@@ -47,7 +47,8 @@ struct pci_dev;
#define PCI_DMA_BUS_IS_PHYS (1)
/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
-#define HAVE_PCI_MMAP 1
+#define HAVE_PCI_MMAP 1
+#define arch_can_pci_mmap_io() 1
#endif /* __KERNEL__ */