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--- a/drivers/of/fdt.c
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+++ b/drivers/of/fdt.c
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@@ -817,6 +817,9 @@ int __init early_init_dt_scan_chosen(uns
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p = of_get_flat_dt_prop(node, "bootargs", &l);
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if (p != NULL && l > 0)
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strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
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+ p = of_get_flat_dt_prop(node, "bootargs-append", &l);
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+ if (p != NULL && l > 0)
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+ strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
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/*
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* CONFIG_CMDLINE is meant to be a default in case nothing else
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--- a/arch/mips/kernel/prom.c
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+++ b/arch/mips/kernel/prom.c
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@@ -49,6 +49,9 @@ void * __init early_init_dt_alloc_memory
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void __init __dt_setup_arch(struct boot_param_header *bph)
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{
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+ if (boot_command_line[0] == '\0')
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+ strcpy(boot_command_line, arcs_cmdline);
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+
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if (!early_init_dt_scan(bph))
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return;
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