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| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2014-09-23 13:59:09 +0400 |
|---|---|---|
| committer | Grant Likely <grant.likely@linaro.org> | 2014-09-25 14:55:50 +0400 |
| commit | 9aacd602f0246f1b1f3c4684b2ab13d0772976f7 (patch) | |
| tree | 63b98dd512853323f19b82ec7a67fa2fd266cde1 /Documentation/isapnp.txt | |
| parent | 8f73d4b7011061f46ba6f46006b2848b412ff43f (diff) | |
| download | linux-9aacd602f0246f1b1f3c4684b2ab13d0772976f7.tar.xz | |
of/fdt: fix memory range check
In cases where board has below memory DT node
memory{
device_type = "memory";
reg = <0x80000000 0x80000000>;
};
Check on the memory range in fdt.c will always fail because it is
comparing MAX_PHYS_ADDR with base + size, in fact it should compare
it with base + size - 1.
This issue was originally noticed on Qualcomm IFC6410 board.
Without this patch kernel shows up noticed unnecessary warnings
[ 0.000000] Machine model: Qualcomm APQ8064/IFC6410
[ 0.000000] Ignoring memory range 0xffffffff - 0x100000000
[ 0.000000] cma: Reserved 64 MiB at ab800000
as a result the size get reduced to 0x7fffffff which looks wrong.
This patch fixes the check involved in generating this warning and
as a result it also fixes the wrong size calculation.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
[grant.likely: adjust new size calculation also]
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'Documentation/isapnp.txt')
0 files changed, 0 insertions, 0 deletions