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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 14:48:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 14:48:31 -0700 |
| commit | d1794f2c5b5817eb79ccc5e00701ca748d1b073a (patch) | |
| tree | 5a4c98e694e88a8c82f342d0cc9edb2a4cbbef36 /drivers/char/sonypi.c | |
| parent | a41eebab7537890409ea9dfe0fcda9b5fbdb090d (diff) | |
| parent | 2fceef397f9880b212a74c418290ce69e7ac00eb (diff) | |
| download | op-kernel-dev-d1794f2c5b5817eb79ccc5e00701ca748d1b073a.zip op-kernel-dev-d1794f2c5b5817eb79ccc5e00701ca748d1b073a.tar.gz | |
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 'drivers/char/sonypi.c')
| -rw-r--r-- | drivers/char/sonypi.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c index 58533de..85e0eb7 100644 --- a/drivers/char/sonypi.c +++ b/drivers/char/sonypi.c @@ -49,6 +49,7 @@ #include <linux/err.h> #include <linux/kfifo.h> #include <linux/platform_device.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #include <asm/io.h> @@ -906,12 +907,14 @@ static int sonypi_misc_release(struct inode *inode, struct file *file) static int sonypi_misc_open(struct inode *inode, struct file *file) { + lock_kernel(); mutex_lock(&sonypi_device.lock); /* Flush input queue on first open */ if (!sonypi_device.open_count) kfifo_reset(sonypi_device.fifo); sonypi_device.open_count++; mutex_unlock(&sonypi_device.lock); + unlock_kernel(); return 0; } |
