[POWERPC] Only call ppc_md.setup_arch() if it is provided
This allows platforms which don't have anything to do at setup_arch time (like a bunch of the 4xx platforms) to eliminate an empty setup_arch hook. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -290,7 +290,8 @@ void __init setup_arch(char **cmdline_p)
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conswitchp = &dummy_con;
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#endif
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ppc_md.setup_arch();
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if (ppc_md.setup_arch)
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ppc_md.setup_arch();
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if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
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paging_init();
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@ -530,7 +530,8 @@ void __init setup_arch(char **cmdline_p)
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conswitchp = &dummy_con;
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#endif
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ppc_md.setup_arch();
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if (ppc_md.setup_arch)
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ppc_md.setup_arch();
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paging_init();
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ppc64_boot_msg(0x15, "Setup Done");
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@ -99,7 +99,7 @@ struct machdep_calls {
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#endif /* CONFIG_PPC64 */
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int (*probe)(void);
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void (*setup_arch)(void);
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void (*setup_arch)(void); /* Optional, may be NULL */
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void (*init_early)(void);
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/* Optional, may be NULL. */
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void (*show_cpuinfo)(struct seq_file *m);
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