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[POWERPC] Split initrd logic out of early_init_dt_scan_chosen() to fix warning 

If CONFIG_BLK_DEV_INITRD is not defined the prop variable in
early_init_dt_scan_chosen() is unused, causing a compiler warning.

So split the initrd logic into a separate function, allowing us to
declare prop only when we need it.

Built for both cases and booted with an initrd.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman 2007-05-10 17:06:30 +10:00 committed by Paul Mackerras
parent 2454c7e98c
commit 40472a5546
1 changed files with 31 additions and 16 deletions
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47
arch/powerpc/kernel/prom.c
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@ -716,11 +716,40 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
return 0;
}
#ifdef CONFIG_BLK_DEV_INITRD
static void __init early_init_dt_check_for_initrd(unsigned long node)
{
unsigned long l;
u32 *prop;
DBG("Looking for initrd properties... ");
prop = of_get_flat_dt_prop(node, "linux,initrd-start", &l);
if (prop) {
initrd_start = (unsigned long)__va(of_read_ulong(prop, l/4));
prop = of_get_flat_dt_prop(node, "linux,initrd-end", &l);
if (prop) {
initrd_end = (unsigned long)
__va(of_read_ulong(prop, l/4));
initrd_below_start_ok = 1;
} else {
initrd_start = 0;
}
}
DBG("initrd_start=0x%lx initrd_end=0x%lx\n", initrd_start, initrd_end);
}
#else
static inline void early_init_dt_check_for_initrd(unsigned long node)
{
}
#endif /* CONFIG_BLK_DEV_INITRD */
static int __init early_init_dt_scan_chosen(unsigned long node,
const char *uname, int depth, void *data)
{
unsigned long *lprop;
u32 *prop;
unsigned long l;
char *p;
@ -762,21 +791,7 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
crashk_res.end = crashk_res.start + *lprop - 1;
#endif
#ifdef CONFIG_BLK_DEV_INITRD
DBG("Looking for initrd properties... ");
prop = of_get_flat_dt_prop(node, "linux,initrd-start", &l);
if (prop) {
initrd_start = (unsigned long)__va(of_read_ulong(prop, l/4));
prop = of_get_flat_dt_prop(node, "linux,initrd-end", &l);
if (prop) {
initrd_end = (unsigned long)__va(of_read_ulong(prop, l/4));
initrd_below_start_ok = 1;
} else {
initrd_start = 0;
}
}
DBG("initrd_start=0x%lx initrd_end=0x%lx\n", initrd_start, initrd_end);
#endif /* CONFIG_BLK_DEV_INITRD */
early_init_dt_check_for_initrd(node);
/* Retreive command line */
p = of_get_flat_dt_prop(node, "bootargs", &l);