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[SPARC64]: Minor bug fix to obp_read_memory(). 

If we end up zero'ing out the size of one of the entries,
pop it out of the array completely because some code that
examines these things cannot handle a zero length element
properly.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-06-22 00:00:00 -07:00
parent 07f8e5f358
commit 486ad10a7e
1 changed files with 19 additions and 2 deletions
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21
arch/sparc64/mm/init.c
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@ -102,8 +102,6 @@ static void __init read_obp_memory(const char *property,
prom_halt();
}
*num_ents = ents;
/* Sanitize what we got from the firmware, by page aligning
* everything.
*/
@ -125,6 +123,25 @@ static void __init read_obp_memory(const char *property,
regs[i].phys_addr = base;
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;
sort(regs, ents, sizeof(struct linux_prom64_registers),
cmp_p64, NULL);
}