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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-15 07:44:51 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-15 07:44:51 +0200 |
| commit | 43d2548bb2ef7e6d753f91468a746784041e522d (patch) | |
| tree | 77d13fcd48fd998393abb825ec36e2b732684a73 /drivers/spi/spidev.c | |
| parent | powerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES (diff) | |
| parent | Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm (diff) | |
| download | linux-43d2548bb2ef7e6d753f91468a746784041e522d.tar.xz linux-43d2548bb2ef7e6d753f91468a746784041e522d.zip | |
Merge commit '85082fd7cbe3173198aac0eb5e85ab1edcc6352c' into test-build
Manual fixup of:
arch/powerpc/Kconfig
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 f5b60c70389b..ddbe1a5e970e 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -30,6 +30,7 @@ #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> @@ -464,6 +465,7 @@ 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) { @@ -489,6 +491,7 @@ 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; } |