diff options
| author |   Tejun Heo <tj@kernel.org> | 2013-02-27 17:04:05 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-27 19:10:15 -0800 |
| commit | 37b61890d757f606c25ac5a247572cb7d5efde96 (patch) | |
| tree | b81abfb289f4d2be4ee77a2b555c26bde6dae6e7 /drivers/firewire/core-device.c | |
| parent | firewire: add minor number range check to fw_device_init() (diff) | |
| download | linux-dev-37b61890d757f606c25ac5a247572cb7d5efde96.tar.xz linux-dev-37b61890d757f606c25ac5a247572cb7d5efde96.zip | |
firewire: convert to idr_alloc()
Convert to the much saner new idr interface.
v2: Stefan pointed out that add_client_resource() may be called from
non-process context. Preload iff @gfp_mask contains __GFP_WAIT.
Also updated to include minor upper limit check.
[tim.gardner@canonical.com: fix accidentally orphaned 'minor'[
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/firewire/core-device.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c index af3e8aa5eedc..03ce7d980c6a 100644 --- a/drivers/firewire/core-device.c +++ b/drivers/firewire/core-device.c @@ -1017,16 +1017,11 @@ static void fw_device_init(struct work_struct *work) fw_device_get(device); down_write(&fw_device_rwsem); - ret = idr_pre_get(&fw_device_idr, GFP_KERNEL) ? - idr_get_new(&fw_device_idr, device, &minor) : - -ENOMEM; - if (minor >= 1 << MINORBITS) { - idr_remove(&fw_device_idr, minor); - minor = -ENOSPC; - } + minor = idr_alloc(&fw_device_idr, device, 0, 1 << MINORBITS, + GFP_KERNEL); up_write(&fw_device_rwsem); - if (ret < 0) + if (minor < 0) goto error; device->device.bus = &fw_bus_type; |