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| author | Jonathan Corbet <corbet@lwn.net> | 2008-05-16 13:46:14 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-20 14:05:50 -0600 |
| commit | 609f9e92b570f390a457a81effe0af6b758dc582 (patch) | |
| tree | 882d5c953a3770e4010d912de6588db6ca354d5e /drivers/spi/spidev.c | |
| parent | d21c95c569c462da20d491b75d0a45bd70ddc1bf (diff) | |
| download | linux-stable-609f9e92b570f390a457a81effe0af6b758dc582.tar.gz linux-stable-609f9e92b570f390a457a81effe0af6b758dc582.tar.bz2 linux-stable-609f9e92b570f390a457a81effe0af6b758dc582.zip | |
spidev: BKL pushdown
Add the BKL to spidev_open(), even though the existing locking looks
adequate.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'drivers/spi/spidev.c')
| -rw-r--r-- | drivers/spi/spidev.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index b3518ca9f04e..ab2b769c83ca 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -29,6 +29,7 @@ #include <linux/errno.h> #include <linux/mutex.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/spi/spi.h> #include <linux/spi/spidev.h> @@ -393,6 +394,7 @@ static int spidev_open(struct inode *inode, struct file *filp) struct spidev_data *spidev; int status = -ENXIO; + lock_kernel(); mutex_lock(&device_list_lock); list_for_each_entry(spidev, &device_list, device_entry) { @@ -418,6 +420,7 @@ static int spidev_open(struct inode *inode, struct file *filp) pr_debug("spidev: nothing for minor %d\n", iminor(inode)); mutex_unlock(&device_list_lock); + unlock_kernel(); return status; } |