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of/fdt: Don't clear initial_boot_params if fdt_check_header() fails
If the device tree pointer is NULL, early_init_dt_verify() fails, leaving initial_boot_params unchanged. If the device tree pointer is non-NULL but invalid, early_init_dt_verify() again fails but this time it also clears initial_boot_params. Leave initial_boot_params unchanged if the device tree pointer is invalid. This doesn't fix a bug, but it makes the behavior more consistent and easier to analyze. Signed-off-by: Bjorn Helgaas <[email protected]> Signed-off-by: Zhen Lei <[email protected]> Signed-off-by: Grant Likely <[email protected]>
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