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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-08-29 06:55:07 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-11 05:53:30 (GMT) |
| commit | ac237b65f56c9b80d7774c35ccce15a74d445621 (patch) | |
| tree | 07f14f0c9553fb1484fa899b0d5e4804eb6fbfaa | |
| parent | 306474304fdfe3723562a02226c0a44e8078d3a0 (diff) | |
| download | linux-ac237b65f56c9b80d7774c35ccce15a74d445621.tar.xz | |
powerpc: Enable /dev/port when isa_io_special is set
isa_io_special is set when the platform provides a "special"
implementation of inX/outX via some FW interface for example.
Such a platform doesn't need an ISA bridge on PCI, and so /dev/port
should be made available even if one isn't present.
This makes the LPC bus IOs accessible via /dev/port on PowerNV Power8
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/include/asm/io.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index db1f296..575fbf8 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -21,7 +21,7 @@ extern struct pci_dev *isa_bridge_pcidev; /* * has legacy ISA devices ? */ -#define arch_has_dev_port() (isa_bridge_pcidev != NULL) +#define arch_has_dev_port() (isa_bridge_pcidev != NULL || isa_io_special) #endif #include <linux/device.h> |