diff options
| author | Tejun Heo <tj@kernel.org> | 2013-02-27 17:04:02 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-27 19:10:15 -0800 |
| commit | 615f2e5c531bc57d5a190f321d697988e950ae4d (patch) | |
| tree | 2073523a21a56ae4d6276e6e9e1526f4a056c996 /drivers/dca/dca-sysfs.c | |
| parent | 56de210245487ef1f1416c8ec9e581ebdd0d32ec (diff) | |
| download | lwn-615f2e5c531bc57d5a190f321d697988e950ae4d.tar.gz lwn-615f2e5c531bc57d5a190f321d697988e950ae4d.zip | |
dca: convert to idr_alloc()
Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Cc: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/dca/dca-sysfs.c')
| -rw-r--r-- | drivers/dca/dca-sysfs.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/drivers/dca/dca-sysfs.c b/drivers/dca/dca-sysfs.c index 591b6597c00a..126cf295b198 100644 --- a/drivers/dca/dca-sysfs.c +++ b/drivers/dca/dca-sysfs.c @@ -53,22 +53,19 @@ void dca_sysfs_remove_req(struct dca_provider *dca, int slot) int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev) { struct device *cd; - int err = 0; + int ret; -idr_try_again: - if (!idr_pre_get(&dca_idr, GFP_KERNEL)) - return -ENOMEM; + idr_preload(GFP_KERNEL); spin_lock(&dca_idr_lock); - err = idr_get_new(&dca_idr, dca, &dca->id); + + ret = idr_alloc(&dca_idr, dca, 0, 0, GFP_NOWAIT); + if (ret >= 0) + dca->id = ret; + spin_unlock(&dca_idr_lock); - switch (err) { - case 0: - break; - case -EAGAIN: - goto idr_try_again; - default: - return err; - } + idr_preload_end(); + if (ret < 0) + return ret; cd = device_create(dca_class, dev, MKDEV(0, 0), NULL, "dca%d", dca->id); if (IS_ERR(cd)) { |