Merge branch 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl

* 'config' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
  BKL: introduce CONFIG_BKL.
  dabusb: remove the BKL
  sunrpc: remove the big kernel lock
  init/main.c: remove BKL notations
  blktrace: remove the big kernel lock
  rtmutex-tester: make it build without BKL
  dvb-core: kill the big kernel lock
  dvb/bt8xx: kill the big kernel lock
  tlclk: remove big kernel lock
  fix rawctl compat ioctls breakage on amd64 and itanic
  uml: kill big kernel lock
  parisc: remove big kernel lock
  cris: autoconvert trivial BKL users
  alpha: kill big kernel lock
  isapnp: BKL removal
  s390/block: kill the big kernel lock
  hpet: kill BKL, add compat_ioctl

arch/cris/arch-v10/drivers/ds1302.c

@@ -19,7 +19,7 @@
 #include <linux/module.h>
 #include <linux/miscdevice.h>
 #include <linux/delay.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/bcd.h>
 #include <linux/capability.h>
 
@@ -34,6 +34,7 @@
 
 #define RTC_MAJOR_NR 121 /* local major, change later */
 
+static DEFINE_MUTEX(ds1302_mutex);
 static const char ds1302_name[] = "ds1302";
 
 /* The DS1302 might be connected to different bits on different products. 
@@ -357,9 +358,9 @@ static long rtc_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned lon
 {
 	int ret;
 
-	lock_kernel();
+	mutex_lock(&ds1302_mutex);
 	ret = rtc_ioctl(file, cmd, arg);
-	unlock_kernel();
+	mutex_unlock(&ds1302_mutex);
 
 	return ret;
 }

arch/cris/arch-v10/drivers/pcf8563.c

@@ -27,7 +27,6 @@
 #include <linux/delay.h>
 #include <linux/bcd.h>
 #include <linux/mutex.h>
-#include <linux/smp_lock.h>
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -49,6 +48,7 @@
 #define rtc_read(x) i2c_readreg(RTC_I2C_READ, x)
 #define rtc_write(x,y) i2c_writereg(RTC_I2C_WRITE, x, y)
 
+static DEFINE_MUTEX(pcf8563_mutex);
 static DEFINE_MUTEX(rtc_lock); /* Protect state etc */
 
 static const unsigned char days_in_month[] =
@@ -343,9 +343,9 @@ static long pcf8563_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned
 {
 	int ret;
 
-	lock_kernel();
+	mutex_lock(&pcf8563_mutex);
 	return pcf8563_ioctl(filp, cmd, arg);
-	unlock_kernel();
+	mutex_unlock(&pcf8563_mutex);
 
 	return ret;
 }

arch/cris/arch-v10/drivers/sync_serial.c

@@ -20,7 +20,7 @@
 #include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/init.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/timer.h>
 #include <asm/irq.h>
 #include <asm/dma.h>
@@ -149,6 +149,7 @@ struct sync_port {
 };
 
 
+static DEFINE_MUTEX(sync_serial_mutex);
 static int etrax_sync_serial_init(void);
 static void initialize_port(int portnbr);
 static inline int sync_data_avail(struct sync_port *port);
@@ -445,7 +446,7 @@ static int sync_serial_open(struct inode *inode, struct file *file)
 	int mode;
 	int err = -EBUSY;
 
-	lock_kernel();
+	mutex_lock(&sync_serial_mutex);
 	DEBUG(printk(KERN_DEBUG "Open sync serial port %d\n", dev));
 
 	if (dev < 0 || dev >= NUMBER_OF_PORTS || !ports[dev].enabled) {
@@ -626,7 +627,7 @@ static int sync_serial_open(struct inode *inode, struct file *file)
 	ret = 0;
 	
 out:
-	unlock_kernel();
+	mutex_unlock(&sync_serial_mutex);
 	return ret;
 }
 
@@ -961,9 +962,9 @@ static long sync_serial_ioctl(struct file *file,
 {
 	long ret;
 
-	lock_kernel();
+	mutex_lock(&sync_serial_mutex);
 	ret = sync_serial_ioctl_unlocked(file, cmd, arg);
-	unlock_kernel();
+	mutex_unlock(&sync_serial_mutex);
 
 	return ret;
 }

arch/cris/arch-v32/drivers/cryptocop.c

@@ -3139,9 +3139,9 @@ cryptocop_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
        struct inode *inode = file->f_path.dentry->d_inode;
        long ret;
 
-       lock_kernel();
+       mutex_lock(&cryptocop_mutex);
        ret = cryptocop_ioctl_unlocked(inode, filp, cmd, arg);
-       unlock_kernel();
+       mutex_unlock(&cryptocop_mutex);
 
        return ret;
 }

arch/cris/arch-v32/drivers/mach-a3/gpio.c

@@ -23,7 +23,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 
 #include <asm/etraxgpio.h>
 #include <hwregs/reg_map.h>
@@ -66,6 +66,7 @@ static int dp_cnt;
 #define DP(x)
 #endif
 
+static DEFINE_MUTEX(gpio_mutex);
 static char gpio_name[] = "etrax gpio";
 
 #ifdef CONFIG_ETRAX_VIRTUAL_GPIO
@@ -391,7 +392,7 @@ static int gpio_open(struct inode *inode, struct file *filp)
 	if (!priv)
 		return -ENOMEM;
 
-	lock_kernel();
+	mutex_lock(&gpio_mutex);
 	memset(priv, 0, sizeof(*priv));
 
 	priv->minor = p;
@@ -414,7 +415,7 @@ static int gpio_open(struct inode *inode, struct file *filp)
 		spin_unlock_irq(&gpio_lock);
 	}
 
-	unlock_kernel();
+	mutex_unlock(&gpio_mutex);
 	return 0;
 }
 
@@ -667,9 +668,9 @@ static long gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
        long ret;
 
-       lock_kernel();
+       mutex_lock(&gpio_mutex);
        ret = gpio_ioctl_unlocked(file, cmd, arg);
-       unlock_kernel();
+       mutex_unlock(&gpio_mutex);
 
        return ret;
 }

arch/cris/arch-v32/drivers/mach-fs/gpio.c

@@ -22,7 +22,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 
 #include <asm/etraxgpio.h>
 #include <hwregs/reg_map.h>
@@ -64,6 +64,7 @@ static int dp_cnt;
 #define DP(x)
 #endif
 
+static DEFINE_MUTEX(gpio_mutex);
 static char gpio_name[] = "etrax gpio";
 
 #if 0
@@ -429,7 +430,7 @@ gpio_open(struct inode *inode, struct file *filp)
 	if (!priv)
 		return -ENOMEM;
 
-	lock_kernel();
+	mutex_lock(&gpio_mutex);
 	memset(priv, 0, sizeof(*priv));
 
 	priv->minor = p;
@@ -450,7 +451,7 @@ gpio_open(struct inode *inode, struct file *filp)
 	alarmlist = priv;
 	spin_unlock_irq(&alarm_lock);
 
-	unlock_kernel();
+	mutex_unlock(&gpio_mutex);
 	return 0;
 }
 
@@ -708,9 +709,9 @@ static long gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
        long ret;
 
-       lock_kernel();
+       mutex_lock(&gpio_mutex);
        ret = gpio_ioctl_unlocked(file, cmd, arg);
-       unlock_kernel();
+       mutex_unlock(&gpio_mutex);
 
        return ret;
 }

arch/cris/arch-v32/drivers/pcf8563.c

@@ -24,7 +24,6 @@
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/ioctl.h>
-#include <linux/smp_lock.h>
 #include <linux/delay.h>
 #include <linux/bcd.h>
 #include <linux/mutex.h>
@@ -45,6 +44,7 @@
 #define rtc_read(x) i2c_readreg(RTC_I2C_READ, x)
 #define rtc_write(x,y) i2c_writereg(RTC_I2C_WRITE, x, y)
 
+static DEFINE_MUTEX(pcf8563_mutex);
 static DEFINE_MUTEX(rtc_lock); /* Protect state etc */
 
 static const unsigned char days_in_month[] =
@@ -339,9 +339,9 @@ static long pcf8563_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned
 {
 	int ret;
 
-	lock_kernel();
+	mutex_lock(&pcf8563_mutex);
 	return pcf8563_ioctl(filp, cmd, arg);
-	unlock_kernel();
+	mutex_unlock(&pcf8563_mutex);
 
 	return ret;
 }

arch/cris/arch-v32/drivers/sync_serial.c

@@ -13,7 +13,7 @@
 #include <linux/errno.h>
 #include <linux/major.h>
 #include <linux/sched.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/init.h>
@@ -145,6 +145,7 @@ typedef struct sync_port
 	spinlock_t lock;
 } sync_port;
 
+static DEFINE_MUTEX(sync_serial_mutex);
 static int etrax_sync_serial_init(void);
 static void initialize_port(int portnbr);
 static inline int sync_data_avail(struct sync_port *port);
@@ -434,7 +435,7 @@ static int sync_serial_open(struct inode *inode, struct file *file)
 	reg_dma_rw_cfg cfg = {.en = regk_dma_yes};
 	reg_dma_rw_intr_mask intr_mask = {.data = regk_dma_yes};
 
-	lock_kernel();
+	mutex_lock(&sync_serial_mutex);
 	DEBUG(printk(KERN_DEBUG "Open sync serial port %d\n", dev));
 
 	if (dev < 0 || dev >= NBR_PORTS || !ports[dev].enabled)
@@ -583,7 +584,7 @@ static int sync_serial_open(struct inode *inode, struct file *file)
 	port->busy++;
 	ret = 0;
 out:
-	unlock_kernel();
+	mutex_unlock(&sync_serial_mutex);
 	return ret;
 }
 
@@ -966,9 +967,9 @@ static long sync_serial_ioctl(struct file *file,
 {
        long ret;
 
-       lock_kernel();
+       mutex_lock(&sync_serial_mutex);
        ret = sync_serial_ioctl_unlocked(file, cmd, arg);
-       unlock_kernel();
+       mutex_unlock(&sync_serial_mutex);
 
        return ret;
 }

arch/parisc/kernel/perf.c

@@ -46,7 +46,6 @@
 #include <linux/init.h>
 #include <linux/proc_fs.h>
 #include <linux/miscdevice.h>
-#include <linux/smp_lock.h>
 #include <linux/spinlock.h>
 
 #include <asm/uaccess.h>
@@ -261,16 +260,13 @@ printk("Preparing to start counters\n");
  */
 static int perf_open(struct inode *inode, struct file *file)
 {
-	lock_kernel();
 	spin_lock(&perf_lock);
 	if (perf_enabled) {
 		spin_unlock(&perf_lock);
-		unlock_kernel();
 		return -EBUSY;
 	}
 	perf_enabled = 1;
  	spin_unlock(&perf_lock);
-	unlock_kernel();
 
 	return 0;
 }

arch/um/drivers/harddog_kern.c

@@ -42,7 +42,7 @@
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include <linux/reboot.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <asm/uaccess.h>
@@ -50,6 +50,7 @@
 
 MODULE_LICENSE("GPL");
 
+static DEFINE_MUTEX(harddog_mutex);
 static DEFINE_SPINLOCK(lock);
 static int timer_alive;
 static int harddog_in_fd = -1;
@@ -66,7 +67,7 @@ static int harddog_open(struct inode *inode, struct file *file)
 	int err = -EBUSY;
 	char *sock = NULL;
 
-	lock_kernel();
+	mutex_lock(&harddog_mutex);
 	spin_lock(&lock);
 	if(timer_alive)
 		goto err;
@@ -83,11 +84,11 @@ static int harddog_open(struct inode *inode, struct file *file)
 
 	timer_alive = 1;
 	spin_unlock(&lock);
-	unlock_kernel();
+	mutex_unlock(&harddog_mutex);
 	return nonseekable_open(inode, file);
 err:
 	spin_unlock(&lock);
-	unlock_kernel();
+	mutex_unlock(&harddog_mutex);
 	return err;
 }
 
@@ -153,9 +154,9 @@ static long harddog_ioctl(struct file *file,
 {
 	long ret;
 
-	lock_kernel();
+	mutex_lock(&harddog_mutex);
 	ret = harddog_ioctl_unlocked(file, cmd, arg);
-	unlock_kernel();
+	mutex_unlock(&harddog_mutex);
 
 	return ret;
 }

arch/um/drivers/hostaudio_kern.c

@@ -8,7 +8,7 @@
 #include "linux/slab.h"
 #include "linux/sound.h"
 #include "linux/soundcard.h"
-#include "linux/smp_lock.h"
+#include "linux/mutex.h"
 #include "asm/uaccess.h"
 #include "init.h"
 #include "os.h"
@@ -63,6 +63,8 @@ static int set_mixer(char *name, int *add)
 __uml_setup("mixer=", set_mixer, "mixer=<mixer device>\n" MIXER_HELP);
 #endif
 
+static DEFINE_MUTEX(hostaudio_mutex);
+
 /* /dev/dsp file operations */
 
 static ssize_t hostaudio_read(struct file *file, char __user *buffer,
@@ -198,9 +200,9 @@ static int hostaudio_open(struct inode *inode, struct file *file)
 		w = 1;
 
 	kparam_block_sysfs_write(dsp);
-	lock_kernel();
+	mutex_lock(&hostaudio_mutex);
 	ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
-	unlock_kernel();
+	mutex_unlock(&hostaudio_mutex);
 	kparam_unblock_sysfs_write(dsp);
 
 	if (ret < 0) {
@@ -259,9 +261,9 @@ static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
 		w = 1;
 
 	kparam_block_sysfs_write(mixer);
-	lock_kernel();
+	mutex_lock(&hostaudio_mutex);
 	ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
-	unlock_kernel();
+	mutex_unlock(&hostaudio_mutex);
 	kparam_unblock_sysfs_write(mixer);
 
 	if (ret < 0) {

arch/um/drivers/ubd_kern.c

@@ -33,7 +33,7 @@
 #include "linux/mm.h"
 #include "linux/slab.h"
 #include "linux/vmalloc.h"
-#include "linux/smp_lock.h"
+#include "linux/mutex.h"
 #include "linux/blkpg.h"
 #include "linux/genhd.h"
 #include "linux/spinlock.h"
@@ -100,6 +100,7 @@ static inline void ubd_set_bit(__u64 bit, unsigned char *data)
 #define DRIVER_NAME "uml-blkdev"
 
 static DEFINE_MUTEX(ubd_lock);
+static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */
 
 static int ubd_open(struct block_device *bdev, fmode_t mode);
 static int ubd_release(struct gendisk *disk, fmode_t mode);
@@ -1101,7 +1102,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
 	struct ubd *ubd_dev = disk->private_data;
 	int err = 0;
 
-	lock_kernel();
+	mutex_lock(&ubd_mutex);
 	if(ubd_dev->count == 0){
 		err = ubd_open_dev(ubd_dev);
 		if(err){
@@ -1120,7 +1121,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
 	        err = -EROFS;
 	}*/
 out:
-	unlock_kernel();
+	mutex_unlock(&ubd_mutex);
 	return err;
 }
 
@@ -1128,10 +1129,10 @@ static int ubd_release(struct gendisk *disk, fmode_t mode)
 {
 	struct ubd *ubd_dev = disk->private_data;
 
-	lock_kernel();
+	mutex_lock(&ubd_mutex);
 	if(--ubd_dev->count == 0)
 		ubd_close_dev(ubd_dev);
-	unlock_kernel();
+	mutex_unlock(&ubd_mutex);
 	return 0;
 }
 

arch/um/kernel/exec.c

@@ -78,13 +78,11 @@ long sys_execve(const char __user *file, const char __user *const __user *argv,
 	long error;
 	char *filename;
 
-	lock_kernel();
 	filename = getname(file);
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename)) goto out;
 	error = execve1(filename, argv, env);
 	putname(filename);
  out:
-	unlock_kernel();
 	return error;
 }

drivers/char/hpet.c

@@ -30,6 +30,7 @@
 #include <linux/bcd.h>
 #include <linux/seq_file.h>
 #include <linux/bitops.h>
+#include <linux/compat.h>
 #include <linux/clocksource.h>
 #include <linux/slab.h>
 
@@ -67,6 +68,7 @@
 #define	read_counter(MC)	readl(MC)
 #endif
 
+static DEFINE_MUTEX(hpet_mutex); /* replaces BKL */
 static u32 hpet_nhpet, hpet_max_freq = HPET_USER_FREQ;
 
 /* This clocksource driver currently only works on ia64 */
@@ -250,7 +252,7 @@ static int hpet_open(struct inode *inode, struct file *file)
 	if (file->f_mode & FMODE_WRITE)
 		return -EINVAL;
 
-	lock_kernel();
+	mutex_lock(&hpet_mutex);
 	spin_lock_irq(&hpet_lock);
 
 	for (devp = NULL, hpetp = hpets; hpetp && !devp; hpetp = hpetp->hp_next)
@@ -264,7 +266,7 @@ static int hpet_open(struct inode *inode, struct file *file)
 
 	if (!devp) {
 		spin_unlock_irq(&hpet_lock);
-		unlock_kernel();
+		mutex_unlock(&hpet_mutex);
 		return -EBUSY;
 	}
 
@@ -272,7 +274,7 @@ static int hpet_open(struct inode *inode, struct file *file)
 	devp->hd_irqdata = 0;
 	devp->hd_flags |= HPET_OPEN;
 	spin_unlock_irq(&hpet_lock);
-	unlock_kernel();
+	mutex_unlock(&hpet_mutex);
 
 	hpet_timer_set_irq(devp);
 
@@ -429,22 +431,6 @@ static int hpet_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int hpet_ioctl_common(struct hpet_dev *, int, unsigned long, int);
-
-static long hpet_ioctl(struct file *file, unsigned int cmd,
-			unsigned long arg)
-{
-	struct hpet_dev *devp;
-	int ret;
-
-	devp = file->private_data;
-	lock_kernel();
-	ret = hpet_ioctl_common(devp, cmd, arg, 0);
-	unlock_kernel();
-
-	return ret;
-}
-
 static int hpet_ioctl_ieon(struct hpet_dev *devp)
 {
 	struct hpet_timer __iomem *timer;
@@ -553,7 +539,8 @@ static inline unsigned long hpet_time_div(struct hpets *hpets,
 }
 
 static int
-hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel)
+hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg,
+		  struct hpet_info *info)
 {
 	struct hpet_timer __iomem *timer;
 	struct hpet __iomem *hpet;
@@ -594,23 +581,15 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel)
 		break;
 	case HPET_INFO:
 		{
-			struct hpet_info info;
-
 			if (devp->hd_ireqfreq)
-				info.hi_ireqfreq =
+				info->hi_ireqfreq =
 					hpet_time_div(hpetp, devp->hd_ireqfreq);
 			else
-				info.hi_ireqfreq = 0;
-			info.hi_flags =
+				info->hi_ireqfreq = 0;
+			info->hi_flags =
 			    readq(&timer->hpet_config) & Tn_PER_INT_CAP_MASK;
-			info.hi_hpet = hpetp->hp_which;
-			info.hi_timer = devp - hpetp->hp_dev;
-			if (kernel)
-				memcpy((void *)arg, &info, sizeof(info));
-			else
-				if (copy_to_user((void __user *)arg, &info,
-						 sizeof(info)))
-					err = -EFAULT;
+			info->hi_hpet = hpetp->hp_which;
+			info->hi_timer = devp - hpetp->hp_dev;
 			break;
 		}
 	case HPET_EPI:
@@ -636,7 +615,7 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel)
 		devp->hd_flags &= ~HPET_PERIODIC;
 		break;
 	case HPET_IRQFREQ:
-		if (!kernel && (arg > hpet_max_freq) &&
+		if ((arg > hpet_max_freq) &&
 		    !capable(CAP_SYS_RESOURCE)) {
 			err = -EACCES;
 			break;
@@ -653,12 +632,63 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg, int kernel)
 	return err;
 }
 
+static long
+hpet_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct hpet_info info;
+	int err;
+
+	mutex_lock(&hpet_mutex);
+	err = hpet_ioctl_common(file->private_data, cmd, arg, &info);
+	mutex_unlock(&hpet_mutex);
+
+	if ((cmd == HPET_INFO) && !err &&
+	    (copy_to_user((void __user *)arg, &info, sizeof(info))))
+		err = -EFAULT;
+
+	return err;
+}
+
+#ifdef CONFIG_COMPAT
+struct compat_hpet_info {
+	compat_ulong_t hi_ireqfreq;	/* Hz */
+	compat_ulong_t hi_flags;	/* information */
+	unsigned short hi_hpet;
+	unsigned short hi_timer;
+};
+
+static long
+hpet_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct hpet_info info;
+	int err;
+
+	mutex_lock(&hpet_mutex);
+	err = hpet_ioctl_common(file->private_data, cmd, arg, &info);
+	mutex_unlock(&hpet_mutex);
+
+	if ((cmd == HPET_INFO) && !err) {
+		struct compat_hpet_info __user *u = compat_ptr(arg);
+		if (put_user(info.hi_ireqfreq, &u->hi_ireqfreq) ||
+		    put_user(info.hi_flags, &u->hi_flags) ||
+		    put_user(info.hi_hpet, &u->hi_hpet) ||
+		    put_user(info.hi_timer, &u->hi_timer))
+			err = -EFAULT;
+	}
+
+	return err;
+}
+#endif
+
 static const struct file_operations hpet_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
 	.read = hpet_read,
 	.poll = hpet_poll,
 	.unlocked_ioctl = hpet_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = hpet_compat_ioctl,
+#endif
 	.open = hpet_open,
 	.release = hpet_release,
 	.fasync = hpet_fasync,

drivers/char/raw.c

@@ -19,8 +19,8 @@
 #include <linux/cdev.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
-#include <linux/smp_lock.h>
 #include <linux/gfp.h>
+#include <linux/compat.h>
 
 #include <asm/uaccess.h>
 
@@ -55,7 +55,6 @@ static int raw_open(struct inode *inode, struct file *filp)
 		return 0;
 	}
 
-	lock_kernel();
 	mutex_lock(&raw_mutex);
 
 	/*
@@ -82,7 +81,6 @@ static int raw_open(struct inode *inode, struct file *filp)
 			bdev->bd_inode->i_mapping;
 	filp->private_data = bdev;
 	mutex_unlock(&raw_mutex);
-	unlock_kernel();
 	return 0;
 
 out2:
@@ -91,7 +89,6 @@ out1:
 	blkdev_put(bdev, filp->f_mode);
 out:
 	mutex_unlock(&raw_mutex);
-	unlock_kernel();
 	return err;
 }
 
@@ -125,20 +122,84 @@ static long
 raw_ioctl(struct file *filp, unsigned int command, unsigned long arg)
 {
 	struct block_device *bdev = filp->private_data;
-	int ret;
-
-	lock_kernel();
-	ret = blkdev_ioctl(bdev, 0, command, arg);
-	unlock_kernel();
-
-	return ret;
+	return blkdev_ioctl(bdev, 0, command, arg);
 }
 
-static void bind_device(struct raw_config_request *rq)
+static int bind_set(int number, u64 major, u64 minor)
 {
-	device_destroy(raw_class, MKDEV(RAW_MAJOR, rq->raw_minor));
-	device_create(raw_class, NULL, MKDEV(RAW_MAJOR, rq->raw_minor), NULL,
-		      "raw%d", rq->raw_minor);
+	dev_t dev = MKDEV(major, minor);
+	struct raw_device_data *rawdev;
+	int err = 0;
+
+	if (number <= 0 || number >= MAX_RAW_MINORS)
+		return -EINVAL;
+
+	if (MAJOR(dev) != major || MINOR(dev) != minor)
+		return -EINVAL;
+
+	rawdev = &raw_devices[number];
+
+	/*
+	 * This is like making block devices, so demand the
+	 * same capability
+	 */
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	/*
+	 * For now, we don't need to check that the underlying
+	 * block device is present or not: we can do that when
+	 * the raw device is opened.  Just check that the
+	 * major/minor numbers make sense.
+	 */
+
+	if (MAJOR(dev) == 0 && dev != 0)
+		return -EINVAL;
+
+	mutex_lock(&raw_mutex);
+	if (rawdev->inuse) {
+		mutex_unlock(&raw_mutex);
+		return -EBUSY;
+	}
+	if (rawdev->binding) {
+		bdput(rawdev->binding);
+		module_put(THIS_MODULE);
+	}
+	if (!dev) {
+		/* unbind */
+		rawdev->binding = NULL;
+		device_destroy(raw_class, MKDEV(RAW_MAJOR, number));
+	} else {
+		rawdev->binding = bdget(dev);
+		if (rawdev->binding == NULL) {
+			err = -ENOMEM;
+		} else {
+			dev_t raw = MKDEV(RAW_MAJOR, number);
+			__module_get(THIS_MODULE);
+			device_destroy(raw_class, raw);
+			device_create(raw_class, NULL, raw, NULL,
+				      "raw%d", number);
+		}
+	}
+	mutex_unlock(&raw_mutex);
+	return err;
+}
+
+static int bind_get(int number, dev_t *dev)
+{
+	struct raw_device_data *rawdev;
+	struct block_device *bdev;
+
+	if (number <= 0 || number >= MAX_RAW_MINORS)
+		return -EINVAL;
+
+	rawdev = &raw_devices[number];
+
+	mutex_lock(&raw_mutex);
+	bdev = rawdev->binding;
+	*dev = bdev ? bdev->bd_dev : 0;
+	mutex_unlock(&raw_mutex);
+	return 0;
 }
 
 /*
@@ -149,106 +210,79 @@ static long raw_ctl_ioctl(struct file *filp, unsigned int command,
 			  unsigned long arg)
 {
 	struct raw_config_request rq;
-	struct raw_device_data *rawdev;
-	int err = 0;
+	dev_t dev;
+	int err;
 
-	lock_kernel();
 	switch (command) {
 	case RAW_SETBIND:
+		if (copy_from_user(&rq, (void __user *) arg, sizeof(rq)))
+			return -EFAULT;
+
+		return bind_set(rq.raw_minor, rq.block_major, rq.block_minor);
+
 	case RAW_GETBIND:
+		if (copy_from_user(&rq, (void __user *) arg, sizeof(rq)))
+			return -EFAULT;
 
-		/* First, find out which raw minor we want */
-
-		if (copy_from_user(&rq, (void __user *) arg, sizeof(rq))) {
-			err = -EFAULT;
-			goto out;
-		}
-
-		if (rq.raw_minor <= 0 || rq.raw_minor >= MAX_RAW_MINORS) {
-			err = -EINVAL;
-			goto out;
-		}
-		rawdev = &raw_devices[rq.raw_minor];
-
-		if (command == RAW_SETBIND) {
-			dev_t dev;
-
-			/*
-			 * This is like making block devices, so demand the
-			 * same capability
-			 */
-			if (!capable(CAP_SYS_ADMIN)) {
-				err = -EPERM;
-				goto out;
-			}
-
-			/*
-			 * For now, we don't need to check that the underlying
-			 * block device is present or not: we can do that when
-			 * the raw device is opened.  Just check that the
-			 * major/minor numbers make sense.
-			 */
-
-			dev = MKDEV(rq.block_major, rq.block_minor);
-			if ((rq.block_major == 0 && rq.block_minor != 0) ||
-					MAJOR(dev) != rq.block_major ||
-					MINOR(dev) != rq.block_minor) {
-				err = -EINVAL;
-				goto out;
-			}
-
-			mutex_lock(&raw_mutex);
-			if (rawdev->inuse) {
-				mutex_unlock(&raw_mutex);
-				err = -EBUSY;
-				goto out;
-			}
-			if (rawdev->binding) {
-				bdput(rawdev->binding);
-				module_put(THIS_MODULE);
-			}
-			if (rq.block_major == 0 && rq.block_minor == 0) {
-				/* unbind */
-				rawdev->binding = NULL;
-				device_destroy(raw_class,
-						MKDEV(RAW_MAJOR, rq.raw_minor));
-			} else {
-				rawdev->binding = bdget(dev);
-				if (rawdev->binding == NULL)
-					err = -ENOMEM;
-				else {
-					__module_get(THIS_MODULE);
-					bind_device(&rq);
-				}
-			}
-			mutex_unlock(&raw_mutex);
-		} else {
-			struct block_device *bdev;
-
-			mutex_lock(&raw_mutex);
-			bdev = rawdev->binding;
-			if (bdev) {
-				rq.block_major = MAJOR(bdev->bd_dev);
-				rq.block_minor = MINOR(bdev->bd_dev);
-			} else {
-				rq.block_major = rq.block_minor = 0;
-			}
-			mutex_unlock(&raw_mutex);
-			if (copy_to_user((void __user *)arg, &rq, sizeof(rq))) {
-				err = -EFAULT;
-				goto out;
-			}
-		}
-		break;
-	default:
-		err = -EINVAL;
-		break;
-	}
-out:
-	unlock_kernel();
+		err = bind_get(rq.raw_minor, &dev);
+		if (err)
 			return err;
+
+		rq.block_major = MAJOR(dev);
+		rq.block_minor = MINOR(dev);
+
+		if (copy_to_user((void __user *)arg, &rq, sizeof(rq)))
+			return -EFAULT;
+
+		return 0;
 	}
 
+	return -EINVAL;
+}
+
+#ifdef CONFIG_COMPAT
+struct raw32_config_request {
+	compat_int_t	raw_minor;
+	compat_u64	block_major;
+	compat_u64	block_minor;
+};
+
+static long raw_ctl_compat_ioctl(struct file *file, unsigned int cmd,
+				unsigned long arg)
+{
+	struct raw32_config_request __user *user_req = compat_ptr(arg);
+	struct raw32_config_request rq;
+	dev_t dev;
+	int err = 0;
+
+	switch (cmd) {
+	case RAW_SETBIND:
+		if (copy_from_user(&rq, user_req, sizeof(rq)))
+			return -EFAULT;
+
+		return bind_set(rq.raw_minor, rq.block_major, rq.block_minor);
+
+	case RAW_GETBIND:
+		if (copy_from_user(&rq, user_req, sizeof(rq)))
+			return -EFAULT;
+
+		err = bind_get(rq.raw_minor, &dev);
+		if (err)
+			return err;
+
+		rq.block_major = MAJOR(dev);
+		rq.block_minor = MINOR(dev);
+
+		if (copy_to_user(user_req, &rq, sizeof(rq)))
+			return -EFAULT;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+#endif
+
 static const struct file_operations raw_fops = {
 	.read		= do_sync_read,
 	.aio_read	= generic_file_aio_read,
@@ -263,6 +297,9 @@ static const struct file_operations raw_fops = {
 
 static const struct file_operations raw_ctl_fops = {
 	.unlocked_ioctl = raw_ctl_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= raw_ctl_compat_ioctl,
+#endif
 	.open		= raw_open,
 	.owner		= THIS_MODULE,
 };

drivers/char/tlclk.c

@@ -37,7 +37,7 @@
 #include <linux/ioport.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/timer.h>
 #include <linux/sysfs.h>
 #include <linux/device.h>
@@ -206,7 +206,7 @@ static int tlclk_open(struct inode *inode, struct file *filp)
 {
 	int result;
 
-	lock_kernel();
+	mutex_lock(&tlclk_mutex);
 	if (test_and_set_bit(0, &useflags)) {
 		result = -EBUSY;
 		/* this legacy device is always one per system and it doesn't
@@ -229,7 +229,7 @@ static int tlclk_open(struct inode *inode, struct file *filp)
 		inb(TLCLK_REG6);	/* Clear interrupt events */
 
 out:
-	unlock_kernel();
+	mutex_unlock(&tlclk_mutex);
 	return result;
 }
 

drivers/gpu/drm/Kconfig

@@ -73,7 +73,8 @@ source "drivers/gpu/drm/radeon/Kconfig"
 
 config DRM_I810
 	tristate "Intel I810"
-	depends on DRM && AGP && AGP_INTEL
+	# BKL usage in order to avoid AB-BA deadlocks, may become BROKEN_ON_SMP
+	depends on DRM && AGP && AGP_INTEL && BKL
 	help
 	  Choose this option if you have an Intel I810 graphics card.  If M is
 	  selected, the module will be called i810.  AGP support is required
@@ -86,6 +87,8 @@ choice
 
 config DRM_I830
 	tristate "i830 driver"
+	# BKL usage in order to avoid AB-BA deadlocks, i830 may get removed
+	depends on BKL
 	help
 	  Choose this option if you have a system that has Intel 830M, 845G,
 	  852GM, 855GM or 865G integrated graphics.  If M is selected, the

drivers/media/Kconfig

@@ -19,6 +19,7 @@ comment "Multimedia core support"
 
 config VIDEO_DEV
 	tristate "Video For Linux"
+	depends on BKL # used in many drivers for ioctl handling, need to kill
 	---help---
 	  V4L core support for video capture and overlay devices, webcams and
 	  AM/FM radio cards.

drivers/media/dvb/bt8xx/dst_ca.c

@@ -22,7 +22,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/string.h>
 #include <linux/dvb/ca.h>
 #include "dvbdev.h"
@@ -52,6 +52,7 @@
 } while(0)
 
 
+static DEFINE_MUTEX(dst_ca_mutex);
 static unsigned int verbose = 5;
 module_param(verbose, int, 0644);
 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
@@ -564,7 +565,7 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
 	void __user *arg = (void __user *)ioctl_arg;
 	int result = 0;
 
-	lock_kernel();
+	mutex_lock(&dst_ca_mutex);
 	dvbdev = file->private_data;
 	state = (struct dst_state *)dvbdev->priv;
 	p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL);
@@ -652,7 +653,7 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
 	kfree (p_ca_slot_info);
 	kfree (p_ca_caps);
 
-	unlock_kernel();
+	mutex_unlock(&dst_ca_mutex);
 	return result;
 }
 

drivers/media/dvb/dvb-core/dmxdev.c

@@ -25,7 +25,6 @@
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/module.h>
-#include <linux/smp_lock.h>
 #include <linux/poll.h>
 #include <linux/ioctl.h>
 #include <linux/wait.h>
@@ -1088,13 +1087,7 @@ static int dvb_demux_do_ioctl(struct file *file,
 static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
 			    unsigned long arg)
 {
-	int ret;
-
-	lock_kernel();
-	ret = dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
-	unlock_kernel();
-
-	return ret;
+	return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
 }
 
 static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
@@ -1186,13 +1179,7 @@ static int dvb_dvr_do_ioctl(struct file *file,
 static long dvb_dvr_ioctl(struct file *file,
 			 unsigned int cmd, unsigned long arg)
 {
-	int ret;
-
-	lock_kernel();
-	ret = dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
-	unlock_kernel();
-
-	return ret;
+	return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
 }
 
 static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)