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[SPARC64]: Simplify read_obp_memory().

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Kick out empty entries as soon as we spot them, and use memmove()
instead of a silly loop to make the operation more clear.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-03-15 00:06:34 -07:00
parent d78d0891d3
commit 0015d3d68c
1 changed files with 11 additions and 16 deletions
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27
arch/sparc64/mm/init.c
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@ -122,26 +122,21 @@ static void __init read_obp_memory(const char *property,
size = 0UL; size = 0UL;
base = new_base; base = new_base;
} }
if (size == 0UL) {
/* If it is empty, simply get rid of it.
* This simplifies the logic of the other
* functions that process these arrays.
*/
memmove(&regs[i], &regs[i + 1],
(ents - i - 1) * sizeof(regs[0]));
i--;
ents--;
continue;
}
regs[i].phys_addr = base; regs[i].phys_addr = base;
regs[i].reg_size = size; regs[i].reg_size = size;
} }
for (i = 0; i < ents; i++) {
if (regs[i].reg_size == 0UL) {
int j;
for (j = i; j < ents - 1; j++) {
regs[j].phys_addr =
regs[j+1].phys_addr;
regs[j].reg_size =
regs[j+1].reg_size;
}
ents--;
i--;
}
}
*num_ents = ents; *num_ents = ents;
sort(regs, ents, sizeof(struct linux_prom64_registers), sort(regs, ents, sizeof(struct linux_prom64_registers),