vmcp: BKL pushdown (6c111d88) · Commits · 戴 / test

drivers/s390/char/vmcp.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}