diff options
Diffstat (limited to 'drivers/mmc/core/block.c')
| -rw-r--r-- | drivers/mmc/core/block.c | 31 |
1 files changed, 5 insertions, 26 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 6c8be1a80551..00c55841a7c4 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -90,7 +90,6 @@ static int max_devices; #define MAX_DEVICES 256 static DEFINE_IDA(mmc_blk_ida); -static DEFINE_SPINLOCK(mmc_blk_lock); /* * There is one mmc_blk_data per slot. @@ -163,11 +162,7 @@ static void mmc_blk_put(struct mmc_blk_data *md) if (md->usage == 0) { int devidx = mmc_get_devidx(md->disk); blk_cleanup_queue(md->queue.queue); - - spin_lock(&mmc_blk_lock); - ida_remove(&mmc_blk_ida, devidx); - spin_unlock(&mmc_blk_lock); - + ida_simple_remove(&mmc_blk_ida, devidx); put_disk(md->disk); kfree(md); } @@ -1839,23 +1834,9 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, struct mmc_blk_data *md; int devidx, ret; -again: - if (!ida_pre_get(&mmc_blk_ida, GFP_KERNEL)) - return ERR_PTR(-ENOMEM); - - spin_lock(&mmc_blk_lock); - ret = ida_get_new(&mmc_blk_ida, &devidx); - spin_unlock(&mmc_blk_lock); - - if (ret == -EAGAIN) - goto again; - else if (ret) - return ERR_PTR(ret); - - if (devidx >= max_devices) { - ret = -ENOSPC; - goto out; - } + devidx = ida_simple_get(&mmc_blk_ida, 0, max_devices, GFP_KERNEL); + if (devidx < 0) + return ERR_PTR(devidx); md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL); if (!md) { @@ -1944,9 +1925,7 @@ again: err_kfree: kfree(md); out: - spin_lock(&mmc_blk_lock); - ida_remove(&mmc_blk_ida, devidx); - spin_unlock(&mmc_blk_lock); + ida_simple_remove(&mmc_blk_ida, devidx); return ERR_PTR(ret); } |