| From | Tejun Heo <> | Subject | [PATCH 26/77] dca: convert to idr_alloc() | Date | Wed, 6 Feb 2013 11:39:58 -0800 |
| |
Convert to the much saner new idr interface.
Only compile tested.
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> --- drivers/dca/dca-sysfs.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/dca/dca-sysfs.c b/drivers/dca/dca-sysfs.c index 591b659..126cf29 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)) { -- 1.8.1
|