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mtd: cmdlinepart: Simplify parse_cmdline_partitions

Browse source 
Simply 'parse_cmdline_partitions': the outer loop iterating over
'partitions' is actually a search loop, it does not execute the inner
loop for each partition, only for the matched partition.

Let's break when search is successful, and move all inner code (relevant
only for the matched partition) outside of the outer loop.

Resulting code is much more readable, and makes the indent level sane.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
This commit is contained in:
Shmulik Ladkani 2012-09-23 09:52:29 +02:00 committed by Artem Bityutskiy
parent 6924d99fcd
commit 438db5a92b
1 changed files with 43 additions and 39 deletions
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82
drivers/mtd/cmdlinepart.c
View file

@ -308,48 +308,52 @@ static int parse_cmdline_partitions(struct mtd_info *master,
return err;
}
/*
* Search for the partition definition matching master->name.
* If master->name is not set, stop at first partition definition.
*/
for (part = partitions; part; part = part->next) {
if ((!mtd_id) || (!strcmp(part->mtd_id, mtd_id))) {
for (i = 0, offset = 0; i < part->num_parts; i++) {
if (part->parts[i].offset == OFFSET_CONTINUOUS)
part->parts[i].offset = offset;
else
offset = part->parts[i].offset;
if (part->parts[i].size == SIZE_REMAINING)
part->parts[i].size = master->size - offset;
if (part->parts[i].size == 0) {
printk(KERN_WARNING ERRP
"%s: skipping zero sized partition\n",
part->mtd_id);
part->num_parts--;
memmove(&part->parts[i],
&part->parts[i + 1],
sizeof(*part->parts) * (part->num_parts - i));
continue;
}
if (offset + part->parts[i].size > master->size) {
printk(KERN_WARNING ERRP
"%s: partitioning exceeds flash size, truncating\n",
part->mtd_id);
part->parts[i].size = master->size - offset;
}
offset += part->parts[i].size;
}
*pparts = kmemdup(part->parts,
sizeof(*part->parts) * part->num_parts,
GFP_KERNEL);
if (!*pparts)
return -ENOMEM;
return part->num_parts;
}
if ((!mtd_id) || (!strcmp(part->mtd_id, mtd_id)))
break;
}
return 0;
if (!part)
return 0;
for (i = 0, offset = 0; i < part->num_parts; i++) {
if (part->parts[i].offset == OFFSET_CONTINUOUS)
part->parts[i].offset = offset;
else
offset = part->parts[i].offset;
if (part->parts[i].size == SIZE_REMAINING)
part->parts[i].size = master->size - offset;
if (part->parts[i].size == 0) {
printk(KERN_WARNING ERRP
"%s: skipping zero sized partition\n",
part->mtd_id);
part->num_parts--;
memmove(&part->parts[i], &part->parts[i + 1],
sizeof(*part->parts) * (part->num_parts - i));
continue;
}
if (offset + part->parts[i].size > master->size) {
printk(KERN_WARNING ERRP
"%s: partitioning exceeds flash size, truncating\n",
part->mtd_id);
part->parts[i].size = master->size - offset;
}
offset += part->parts[i].size;
}
*pparts = kmemdup(part->parts, sizeof(*part->parts) * part->num_parts,
GFP_KERNEL);
if (!*pparts)
return -ENOMEM;
return part->num_parts;
}