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of: only scan for reserved mem when fdt present

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When the reserved memory patches hit -next, several legacy (non-DT) boot
failures were detected and bisected down to that commit. There needs to
be some sanity checking whether a DT is even present before parsing the
reserved ranges.

Reported-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
(cherry picked from commit 2040b52768)
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Josh Cartwright
2014-03-13 16:36:36 -05:00
committed by Mark Brown
parent 7c828dcc5c
commit b94c8bedff
1 changed files with 3 additions and 0 deletions
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3
drivers/of/fdt.c
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@@ -559,6 +559,9 @@ static int __init __fdt_scan_reserved_mem(unsigned long node, const char *uname,
*/
void __init early_init_fdt_scan_reserved_mem(void)
{
if (!initial_boot_params)
return;
of_scan_flat_dt(__fdt_scan_reserved_mem, NULL);
fdt_init_reserved_mem();
}