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| author | Matthias Brugger <mbrugger@suse.com> | 2019-09-05 10:48:47 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2019-10-15 08:40:02 -0600 |
| commit | 0ba41ce1b7816c229cc19e0621148b98f990cb68 (patch) | |
| tree | 449a98e679026e6eaa471331af17a1c0f12d0494 /scripts | |
| parent | ce2dae3a44ccc2fe87a9589e3a70ba51885930ab (diff) | |
| download | u-boot-0ba41ce1b7816c229cc19e0621148b98f990cb68.tar.gz u-boot-0ba41ce1b7816c229cc19e0621148b98f990cb68.tar.bz2 u-boot-0ba41ce1b7816c229cc19e0621148b98f990cb68.zip | |
libfdt: return correct value if #size-cells property is not present
According to the device tree specification, the default value for
was not present.
This patch also makes fdt_address_cells() and fdt_size_cells() conform
to the behaviour documented in libfdt.h. The defaults are only returned
if fdt_getprop() returns -FDT_ERR_NOTFOUND, otherwise the actual error
is returned.
This is based on upstream commit:
aa7254d ("libfdt: return correct value if #size-cells property is not present")
but misses the test case part, as we don't implement them in U-Boot.
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/dtc/libfdt/fdt_addresses.c | 16 | ||||
| -rw-r--r-- | scripts/dtc/libfdt/libfdt.h | 2 |
2 files changed, 14 insertions, 4 deletions
diff --git a/scripts/dtc/libfdt/fdt_addresses.c b/scripts/dtc/libfdt/fdt_addresses.c index 49537b578d..f13a87dfa0 100644 --- a/scripts/dtc/libfdt/fdt_addresses.c +++ b/scripts/dtc/libfdt/fdt_addresses.c @@ -64,7 +64,7 @@ static int fdt_cells(const void *fdt, int nodeoffset, const char *name) c = fdt_getprop(fdt, nodeoffset, name, &len); if (!c) - return 2; + return len; if (len != sizeof(*c)) return -FDT_ERR_BADNCELLS; @@ -78,10 +78,20 @@ static int fdt_cells(const void *fdt, int nodeoffset, const char *name) int fdt_address_cells(const void *fdt, int nodeoffset) { - return fdt_cells(fdt, nodeoffset, "#address-cells"); + int val; + + val = fdt_cells(fdt, nodeoffset, "#address-cells"); + if (val == -FDT_ERR_NOTFOUND) + return 2; + return val; } int fdt_size_cells(const void *fdt, int nodeoffset) { - return fdt_cells(fdt, nodeoffset, "#size-cells"); + int val; + + val = fdt_cells(fdt, nodeoffset, "#size-cells"); + if (val == -FDT_ERR_NOTFOUND) + return 1; + return val; } diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h index 66f01fec53..5c778b115b 100644 --- a/scripts/dtc/libfdt/libfdt.h +++ b/scripts/dtc/libfdt/libfdt.h @@ -1109,7 +1109,7 @@ int fdt_address_cells(const void *fdt, int nodeoffset); * * returns: * 0 <= n < FDT_MAX_NCELLS, on success - * 2, if the node has no #size-cells property + * 1, if the node has no #size-cells property * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid * #size-cells property * -FDT_ERR_BADMAGIC, |