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It seems that prom_init's early_cmdline_parse is broken on at least Apple 970 xserves and IBM JS20 blades with SLOF. The firmware of these machines returns -1 and 1 respectively when getprop is called for the bootargs property of /chosen, causing Linux to ignore its builtin command line in favor of a null string. This patch makes Linux use its builtin command line if getprop returns an error or a null string. Signed-off-by: Amos Waterland <apw@us.ibm.com> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>