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| author | Robin Murphy <robin.murphy@arm.com> | 2019-07-02 19:42:39 +0200 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-10-08 20:50:22 +0200 |
| commit | b68ac8dc22ebbf003e26e44bf4dd3030c076df5a (patch) | |
| tree | d26b5be8ad883c6ca06698aa186bd11523df94ae /drivers/of/address.c | |
| parent | of: address: Follow DMA parent for "dma-coherent" (diff) | |
| download | linux-b68ac8dc22ebbf003e26e44bf4dd3030c076df5a.tar.xz linux-b68ac8dc22ebbf003e26e44bf4dd3030c076df5a.zip | |
of: Factor out #{addr,size}-cells parsing
In some cases such as PCI host controllers, we may have a "parent bus"
which is an OF leaf node, but still need to correctly parse ranges from
the point of view of that bus. For that, factor out variants of the
"#addr-cells" and "#size-cells" parsers which do not assume they have a
device node and thus immediately traverse upwards before reading the
relevant property.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[robh: don't make of_bus_n_{addr,size}_cells() public]
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/of/address.c')
| -rw-r--r-- | drivers/of/address.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/of/address.c b/drivers/of/address.c index 3fd34f7ad772..887c0413f648 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -14,6 +14,8 @@ #include <linux/slab.h> #include <linux/string.h> +#include "of_private.h" + /* Max address size we deal with */ #define OF_MAX_ADDR_CELLS 4 #define OF_CHECK_ADDR_COUNT(na) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS) |