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powerpc/prom: Stop scanning dev-tree for fdump early 

Function early_init_dt_scan_fw_dump() is called to scan the device
tree for fdump properties under node "rtas". Any one of them is
invalid, we can stop scanning the device tree early by returning
"1". It would save a bit time during boot.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan 2014-04-24 18:00:31 +10:00 committed by Benjamin Herrenschmidt
parent e9bc03fe22
commit a7d0431774
1 changed files with 3 additions and 2 deletions
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5
arch/powerpc/kernel/fadump.c
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@ -69,7 +69,7 @@ int __init early_init_dt_scan_fw_dump(unsigned long node,
*/
token = of_get_flat_dt_prop(node, "ibm,configure-kernel-dump", NULL);
if (!token)
return 0;
return 1;
fw_dump.fadump_supported = 1;
fw_dump.ibm_configure_kernel_dump = *token;
@ -92,7 +92,7 @@ int __init early_init_dt_scan_fw_dump(unsigned long node,
&size);
if (!sections)
return 0;
return 1;
num_sections = size / (3 * sizeof(u32));
@ -110,6 +110,7 @@ int __init early_init_dt_scan_fw_dump(unsigned long node,
break;
}
}
return 1;
}