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| author | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-25 10:40:14 -0400 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-25 10:40:14 -0400 |
| commit | ff877ea80efa2015b6263766f78ee42c2a1b32f9 (patch) | |
| tree | 85205005c611ab774702148558321c6fb92f1ccd /drivers/char/tpm/tpm.c | |
| parent | 30821fee4f0cb3e6d241d9f7ddc37742212e3eb7 (diff) | |
| parent | d37e6bf68fc1eb34a4ad21d9ae8890ed37ea80e7 (diff) | |
| download | linux-ff877ea80efa2015b6263766f78ee42c2a1b32f9.tar.gz linux-ff877ea80efa2015b6263766f78ee42c2a1b32f9.tar.bz2 linux-ff877ea80efa2015b6263766f78ee42c2a1b32f9.zip | |
Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6
Diffstat (limited to 'drivers/char/tpm/tpm.c')
| -rw-r--r-- | drivers/char/tpm/tpm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index a5d8bcb40000..e1fc193d9396 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -26,6 +26,7 @@ #include <linux/poll.h> #include <linux/mutex.h> #include <linux/spinlock.h> +#include <linux/smp_lock.h> #include "tpm.h" @@ -897,6 +898,7 @@ int tpm_open(struct inode *inode, struct file *file) int rc = 0, minor = iminor(inode); struct tpm_chip *chip = NULL, *pos; + lock_kernel(); spin_lock(&driver_lock); list_for_each_entry(pos, &tpm_chip_list, list) { @@ -926,16 +928,19 @@ int tpm_open(struct inode *inode, struct file *file) if (chip->data_buffer == NULL) { chip->num_opens--; put_device(chip->dev); + unlock_kernel(); return -ENOMEM; } atomic_set(&chip->data_pending, 0); file->private_data = chip; + unlock_kernel(); return 0; err_out: spin_unlock(&driver_lock); + unlock_kernel(); return rc; } EXPORT_SYMBOL_GPL(tpm_open); |