static void efx_mtd_remove_device(struct efx_mtd *efx_mtd)
{
struct efx_mtd_partition *part;
efx_for_each_partition(part, efx_mtd)
efx_mtd_remove_partition(part);
list_del(&efx_mtd->node);
kfree(efx_mtd);
}
void efx_mtd_remove(struct efx_nic *efx)
{
struct efx_mtd_partition *parts, *part, *next;
WARN_ON(efx_dev_registered(efx));
if (list_empty(&efx->mtd_list))
return;
parts = list_first_entry(&efx->mtd_list, struct efx_mtd_partition,
node);
list_for_each_entry_safe(part, next, &efx->mtd_list, node)
efx_mtd_remove_partition(part);
kfree(parts);
}
int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts,
size_t n_parts, size_t sizeof_part)
{
struct efx_mtd_partition *part;
size_t i;
for (i = 0; i < n_parts; i++) {
part = (struct efx_mtd_partition *)((char *)parts +
i * sizeof_part);
part->mtd.writesize = 1;
part->mtd.owner = THIS_MODULE;
part->mtd.priv = efx;
part->mtd.name = part->name;
part->mtd._erase = efx_mtd_erase;
part->mtd._read = efx->type->mtd_read;
part->mtd._write = efx->type->mtd_write;
part->mtd._sync = efx_mtd_sync;
efx->type->mtd_rename(part);
if (mtd_device_register(&part->mtd, NULL, 0))
goto fail;
/* Add to list in order - efx_mtd_remove() depends on this */
list_add_tail(&part->node, &efx->mtd_list);
}
return 0;
fail:
while (i--) {
part = (struct efx_mtd_partition *)((char *)parts +
i * sizeof_part);
efx_mtd_remove_partition(part);
}
/* Failure is unlikely here, but probably means we're out of memory */
return -ENOMEM;
}