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| author | Arnd Bergmann <arnd@arndb.de> | 2008-05-20 19:16:59 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-07-02 15:06:26 -0600 |
| commit | 6c111d886317513605c459cbe8d1970fab732c90 (patch) | |
| tree | a708241a865cf3f31d6356053394ddbbbbfe0d0a /drivers/s390/char | |
| parent | ffe83733b88655b643e9d4ad0dda5ef9584d5926 (diff) | |
| download | linux-6c111d886317513605c459cbe8d1970fab732c90.tar.gz linux-6c111d886317513605c459cbe8d1970fab732c90.tar.bz2 linux-6c111d886317513605c459cbe8d1970fab732c90.zip | |
vmcp: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/vmcp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c index 2f419b0ea628..bf3dc6e0e33a 100644 --- a/drivers/s390/char/vmcp.c +++ b/drivers/s390/char/vmcp.c @@ -16,6 +16,7 @@ #include <linux/kernel.h> #include <linux/miscdevice.h> #include <linux/module.h> +#include <linux/smp_lock.h> #include <asm/cpcmd.h> #include <asm/debug.h> #include <asm/uaccess.h> @@ -39,11 +40,14 @@ static int vmcp_open(struct inode *inode, struct file *file) session = kmalloc(sizeof(*session), GFP_KERNEL); if (!session) return -ENOMEM; + + lock_kernel(); session->bufsize = PAGE_SIZE; session->response = NULL; session->resp_size = 0; mutex_init(&session->mutex); file->private_data = session; + unlock_kernel(); return nonseekable_open(inode, file); } |