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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-15 01:48:31 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-15 01:48:31 +0400 |
| commit | d1794f2c5b5817eb79ccc5e00701ca748d1b073a (patch) | |
| tree | 5a4c98e694e88a8c82f342d0cc9edb2a4cbbef36 /kernel | |
| parent | a41eebab7537890409ea9dfe0fcda9b5fbdb090d (diff) | |
| parent | 2fceef397f9880b212a74c418290ce69e7ac00eb (diff) | |
| download | linux-d1794f2c5b5817eb79ccc5e00701ca748d1b073a.tar.xz | |
Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6
* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits)
IB/umad: BKL is not needed for ib_umad_open()
IB/uverbs: BKL is not needed for ib_uverbs_open()
bf561-coreb: BKL unneeded for open()
Call fasync() functions without the BKL
snd/PCM: fasync BKL pushdown
ipmi: fasync BKL pushdown
ecryptfs: fasync BKL pushdown
Bluetooth VHCI: fasync BKL pushdown
tty_io: fasync BKL pushdown
tun: fasync BKL pushdown
i2o: fasync BKL pushdown
mpt: fasync BKL pushdown
Remove BKL from remote_llseek v2
Make FAT users happier by not deadlocking
x86-mce: BKL pushdown
vmwatchdog: BKL pushdown
vmcp: BKL pushdown
via-pmu: BKL pushdown
uml-random: BKL pushdown
uml-mmapper: BKL pushdown
...
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/pm_qos_params.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/pm_qos_params.c b/kernel/pm_qos_params.c index 0afe32be4c85..8cb757026386 100644 --- a/kernel/pm_qos_params.c +++ b/kernel/pm_qos_params.c @@ -29,6 +29,7 @@ #include <linux/pm_qos_params.h> #include <linux/sched.h> +#include <linux/smp_lock.h> #include <linux/spinlock.h> #include <linux/slab.h> #include <linux/time.h> @@ -358,15 +359,19 @@ static int pm_qos_power_open(struct inode *inode, struct file *filp) int ret; long pm_qos_class; + lock_kernel(); pm_qos_class = find_pm_qos_object_by_minor(iminor(inode)); if (pm_qos_class >= 0) { filp->private_data = (void *)pm_qos_class; sprintf(name, "process_%d", current->pid); ret = pm_qos_add_requirement(pm_qos_class, name, PM_QOS_DEFAULT_VALUE); - if (ret >= 0) + if (ret >= 0) { + unlock_kernel(); return 0; + } } + unlock_kernel(); return -EPERM; } |