Merge branch 'bkl-drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'bkl-drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  agp: Remove the BKL from agp_open
  inifiband: Remove BKL from ipath_open()
  mips: Remove BKL from tb0219
  drivers: Remove BKL from scx200_gpio
  drivers: Remove BKL from pc8736x_gpio
  parisc: Remove BKL from eisa_eeprom
  rtc: Remove BKL from efirtc
  input: Remove BKL from hp_sdc_rtc
  hw_random: Remove BKL from core
  macintosh: Remove BKL from ans-lcd
  nvram: Drop the bkl from non-generic nvram_llseek()
  nvram: Drop the bkl from nvram_llseek()
  mem_class: Drop the bkl from memory_open()
  spi: Remove BKL from spidev_open
  drivers: Remove BKL from cs5535_gpio
  drivers: Remove BKL from misc_open

16 files changed, 52 insertions, 98 deletions

diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index a96f3197e60f..43412c03969e 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -676,25 +676,25 @@ static int agp_open(struct inode *inode, struct file *file)
         int minor = iminor(inode);
         struct agp_file_private *priv;
         struct agp_client *client;
-        int rc = -ENXIO;
-
-        lock_kernel();
-        mutex_lock(&(agp_fe.agp_mutex));
 
         if (minor != AGPGART_MINOR)
-                goto err_out;
+                return -ENXIO;
+
+        mutex_lock(&(agp_fe.agp_mutex));
 
         priv = kzalloc(sizeof(struct agp_file_private), GFP_KERNEL);
-        if (priv == NULL)
-                goto err_out_nomem;
+        if (priv == NULL) {
+                mutex_unlock(&(agp_fe.agp_mutex));
+                return -ENOMEM;
+        }
 
         set_bit(AGP_FF_ALLOW_CLIENT, &priv->access_flags);
         priv->my_pid = current->pid;
 
-        if (capable(CAP_SYS_RAWIO)) {
+        if (capable(CAP_SYS_RAWIO))
                 /* Root priv, can be controller */
                 set_bit(AGP_FF_ALLOW_CONTROLLER, &priv->access_flags);
-        }
+
         client = agp_find_client_by_pid(current->pid);
 
         if (client != NULL) {
@@ -704,16 +704,10 @@ static int agp_open(struct inode *inode, struct file *file)
         file->private_data = (void *) priv;
         agp_insert_file_private(priv);
         DBG("private=%p, client=%p", priv, client);
-        mutex_unlock(&(agp_fe.agp_mutex));
-        unlock_kernel();
-        return 0;
 
-err_out_nomem:
-        rc = -ENOMEM;
-err_out:
         mutex_unlock(&(agp_fe.agp_mutex));
-        unlock_kernel();
-        return rc;
+
+        return 0;
 }
 
 
diff --git a/drivers/char/cs5535_gpio.c b/drivers/char/cs5535_gpio.c
index 04ba906b4880..4d830dc482ef 100644
--- a/drivers/char/cs5535_gpio.c
+++ b/drivers/char/cs5535_gpio.c
@@ -17,7 +17,7 @@
 #include <linux/cdev.h>
 #include <linux/ioport.h>
 #include <linux/pci.h>
-#include <linux/smp_lock.h>
+
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
@@ -158,7 +158,6 @@ static int cs5535_gpio_open(struct inode *inode, struct file *file)
 {
         u32 m = iminor(inode);
 
-        cycle_kernel_lock();
         /* the mask says which pins are usable by this driver */
         if ((mask & (1 << m)) == 0)
                 return -EINVAL;
diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c
index 34d15d548236..26a47dc88f61 100644
--- a/drivers/char/efirtc.c
+++ b/drivers/char/efirtc.c
@@ -27,8 +27,6 @@
  *      - Add module support
  */
 
-
-#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
@@ -174,13 +172,12 @@ static long efi_rtc_ioctl(struct file *file, unsigned int cmd,
                         return -EINVAL;
 
                 case RTC_RD_TIME:
-                        lock_kernel();
                         spin_lock_irqsave(&efi_rtc_lock, flags);
 
                         status = efi.get_time(&eft, &cap);
 
                         spin_unlock_irqrestore(&efi_rtc_lock,flags);
-                        unlock_kernel();
+
                         if (status != EFI_SUCCESS) {
                                 /* should never happen */
                                 printk(KERN_ERR "efitime: can't read time\n");
@@ -202,13 +199,11 @@ static long efi_rtc_ioctl(struct file *file, unsigned int cmd,
 
                         convert_to_efi_time(&wtime, &eft);
 
-                        lock_kernel();
                         spin_lock_irqsave(&efi_rtc_lock, flags);
 
                         status = efi.set_time(&eft);
 
                         spin_unlock_irqrestore(&efi_rtc_lock,flags);
-                        unlock_kernel();
 
                         return status == EFI_SUCCESS ? 0 : -EINVAL;
 
@@ -224,7 +219,6 @@ static long efi_rtc_ioctl(struct file *file, unsigned int cmd,
 
                         convert_to_efi_time(&wtime, &eft);
 
-                        lock_kernel();
                         spin_lock_irqsave(&efi_rtc_lock, flags);
                         /*
                          * XXX Fixme:
@@ -235,19 +229,16 @@ static long efi_rtc_ioctl(struct file *file, unsigned int cmd,
                         status = efi.set_wakeup_time((efi_bool_t)enabled, &eft);
 
                         spin_unlock_irqrestore(&efi_rtc_lock,flags);
-                        unlock_kernel();
 
                         return status == EFI_SUCCESS ? 0 : -EINVAL;
 
                 case RTC_WKALM_RD:
 
-                        lock_kernel();
                         spin_lock_irqsave(&efi_rtc_lock, flags);
 
                         status = efi.get_wakeup_time((efi_bool_t *)&enabled, (efi_bool_t *)&pending, &eft);
 
                         spin_unlock_irqrestore(&efi_rtc_lock,flags);
-                        unlock_kernel();
 
                         if (status != EFI_SUCCESS) return -EINVAL;
 
@@ -277,7 +268,6 @@ static int efi_rtc_open(struct inode *inode, struct file *file)
          * We do accept multiple open files at the same time as we
          * synchronize on the per call operation.
          */
-        cycle_kernel_lock();
         return 0;
 }
 
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index ef31738c2cbe..fda4181b5e67 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -19,7 +19,6 @@
 #include <linux/miscdevice.h>
 #include <linux/fcntl.h>
 #include <linux/init.h>
-#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 #include <asm/nvram.h>
 #ifdef CONFIG_PPC_PMAC
@@ -32,7 +31,6 @@ static ssize_t nvram_len;
 
 static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
 {
-        lock_kernel();
         switch (origin) {
         case 1:
                 offset += file->f_pos;
@@ -41,12 +39,11 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
                 offset += nvram_len;
                 break;
         }
-        if (offset < 0) {
-                unlock_kernel();
+        if (offset < 0)
                 return -EINVAL;
-        }
+
         file->f_pos = offset;
-        unlock_kernel();
+
         return file->f_pos;
 }
 
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 8b7d56a0fe3a..e989f67bb61f 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -76,7 +76,6 @@ static int rng_dev_open(struct inode *inode, struct file *filp)
                 return -EINVAL;
         if (filp->f_mode & FMODE_WRITE)
                 return -EINVAL;
-        cycle_kernel_lock();
         return 0;
 }
 
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index a074fceb67d3..ad82ec92ebd4 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -26,7 +26,6 @@
 #include <linux/bootmem.h>
 #include <linux/splice.h>
 #include <linux/pfn.h>
-#include <linux/smp_lock.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -892,29 +891,23 @@ static int memory_open(struct inode *inode, struct file *filp)
 {
         int minor;
         const struct memdev *dev;
-        int ret = -ENXIO;
-
-        lock_kernel();
 
         minor = iminor(inode);
         if (minor >= ARRAY_SIZE(devlist))
-                goto out;
+                return -ENXIO;
 
         dev = &devlist[minor];
         if (!dev->fops)
-                goto out;
+                return -ENXIO;
 
         filp->f_op = dev->fops;
         if (dev->dev_info)
                 filp->f_mapping->backing_dev_info = dev->dev_info;
 
         if (dev->fops->open)
-                ret = dev->fops->open(inode, filp);
-        else
-                ret = 0;
-out:
-        unlock_kernel();
-        return ret;
+                return dev->fops->open(inode, filp);
+
+        return 0;
 }
 
 static const struct file_operations memory_fops = {
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 07fa612a58d5..96f1cd086dd2 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -49,7 +49,6 @@
 #include <linux/device.h>
 #include <linux/tty.h>
 #include <linux/kmod.h>
-#include <linux/smp_lock.h>
 
 /*
  * Head entry for the doubly linked miscdevice list
@@ -118,8 +117,7 @@ static int misc_open(struct inode * inode, struct file * file)
         struct miscdevice *c;
         int err = -ENODEV;
         const struct file_operations *old_fops, *new_fops = NULL;
-        
-        lock_kernel();
+
         mutex_lock(&misc_mtx);
         
         list_for_each_entry(c, &misc_list, list) {
@@ -157,7 +155,6 @@ static int misc_open(struct inode * inode, struct file * file)
         fops_put(old_fops);
 fail:
         mutex_unlock(&misc_mtx);
-        unlock_kernel();
         return err;
 }
 
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 88cee4099be9..2100a8f7bd86 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -38,7 +38,6 @@
 #define NVRAM_VERSION   "1.3"
 
 #include <linux/module.h>
-#include <linux/smp_lock.h>
 #include <linux/nvram.h>
 
 #define PC              1
@@ -214,7 +213,6 @@ void nvram_set_checksum(void)
 
 static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
 {
-        lock_kernel();
         switch (origin) {
         case 0:
                 /* nothing to do */
@@ -226,7 +224,7 @@ static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
                 offset += NVRAM_BYTES;
                 break;
         }
-        unlock_kernel();
+
         return (offset >= 0) ? (file->f_pos = offset) : -EINVAL;
 }
 
diff --git a/drivers/char/pc8736x_gpio.c b/drivers/char/pc8736x_gpio.c
index 3f7da8cf3a80..8ecbcc174c15 100644
--- a/drivers/char/pc8736x_gpio.c
+++ b/drivers/char/pc8736x_gpio.c
@@ -20,7 +20,6 @@
 #include <linux/mutex.h>
 #include <linux/nsc_gpio.h>
 #include <linux/platform_device.h>
-#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 
 #define DEVNAME "pc8736x_gpio"
@@ -223,7 +222,6 @@ static int pc8736x_gpio_open(struct inode *inode, struct file *file)
         unsigned m = iminor(inode);
         file->private_data = &pc8736x_gpio_ops;
 
-        cycle_kernel_lock();
         dev_dbg(&pdev->dev, "open %d\n", m);
 
         if (m >= PC8736X_GPIO_CT)
diff --git a/drivers/char/scx200_gpio.c b/drivers/char/scx200_gpio.c
index 1d9100561c8a..99e5272e3c53 100644
--- a/drivers/char/scx200_gpio.c
+++ b/drivers/char/scx200_gpio.c
@@ -12,7 +12,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
@@ -52,7 +51,6 @@ static int scx200_gpio_open(struct inode *inode, struct file *file)
         unsigned m = iminor(inode);
         file->private_data = &scx200_gpio_ops;
 
-        cycle_kernel_lock();
         if (m >= MAX_PINS)
                 return -EINVAL;
         return nonseekable_open(inode, file);
diff --git a/drivers/char/tb0219.c b/drivers/char/tb0219.c
index b3ec9b10e292..cad4eb65f13d 100644
--- a/drivers/char/tb0219.c
+++ b/drivers/char/tb0219.c
@@ -21,7 +21,6 @@
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/smp_lock.h>
 
 #include <asm/io.h>
 #include <asm/reboot.h>
@@ -38,7 +37,7 @@ MODULE_PARM_DESC(major, "Major device number");
 
 static void (*old_machine_restart)(char *command);
 static void __iomem *tb0219_base;
-static spinlock_t tb0219_lock;
+static DEFINE_SPINLOCK(tb0219_lock);
 
 #define tb0219_read(offset)             readw(tb0219_base + (offset))
 #define tb0219_write(offset, value)     writew((value), tb0219_base + (offset))
@@ -237,7 +236,6 @@ static int tanbac_tb0219_open(struct inode *inode, struct file *file)
 {
         unsigned int minor;
 
-        cycle_kernel_lock();
         minor = iminor(inode);
         switch (minor) {
         case 0:
@@ -306,8 +304,6 @@ static int __devinit tb0219_probe(struct platform_device *dev)
                 return retval;
         }
 
-        spin_lock_init(&tb0219_lock);
-
         old_machine_restart = _machine_restart;
         _machine_restart = tb0219_restart;
 
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 40dbe54056c7..73933a41ce84 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1821,7 +1821,6 @@ done:
 static int ipath_open(struct inode *in, struct file *fp)
 {
         /* The real work is performed later in ipath_assign_port() */
-        cycle_kernel_lock();
         fp->private_data = kzalloc(sizeof(struct ipath_filedata), GFP_KERNEL);
         return fp->private_data ? 0 : -ENOMEM;
 }
diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c
index ea821b546969..ad730e15afc0 100644
--- a/drivers/input/misc/hp_sdc_rtc.c
+++ b/drivers/input/misc/hp_sdc_rtc.c
@@ -35,7 +35,6 @@
 
 #include <linux/hp_sdc.h>
 #include <linux/errno.h>
-#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/module.h>
@@ -409,7 +408,6 @@ static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait)
 
 static int hp_sdc_rtc_open(struct inode *inode, struct file *file)
 {
-        cycle_kernel_lock();
         return 0;
 }
 
diff --git a/drivers/macintosh/ans-lcd.c b/drivers/macintosh/ans-lcd.c
index 6a8221893256..a3d25da2f275 100644
--- a/drivers/macintosh/ans-lcd.c
+++ b/drivers/macintosh/ans-lcd.c
@@ -3,7 +3,6 @@
  */
 
 #include <linux/types.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
@@ -26,6 +25,7 @@
 static unsigned long anslcd_short_delay = 80;
 static unsigned long anslcd_long_delay = 3280;
 static volatile unsigned char __iomem *anslcd_ptr;
+static DEFINE_MUTEX(anslcd_mutex);
 
 #undef DEBUG
 
@@ -65,26 +65,31 @@ anslcd_write( struct file * file, const char __user * buf,
 
         if (!access_ok(VERIFY_READ, buf, count))
                 return -EFAULT;
+
+        mutex_lock(&anslcd_mutex);
         for ( i = *ppos; count > 0; ++i, ++p, --count ) 
         {
                 char c;
                 __get_user(c, p);
                 anslcd_write_byte_data( c );
         }
+        mutex_unlock(&anslcd_mutex);
         *ppos = i;
         return p - buf;
 }
 
-static int
-anslcd_ioctl( struct inode * inode, struct file * file,
-                                unsigned int cmd, unsigned long arg )
+static long
+anslcd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         char ch, __user *temp;
+        long ret = 0;
 
 #ifdef DEBUG
         printk(KERN_DEBUG "LCD: ioctl(%d,%d)\n",cmd,arg);
 #endif
 
+        mutex_lock(&anslcd_mutex);
+
         switch ( cmd )
         {
         case ANSLCD_CLEAR:
@@ -93,7 +98,7 @@ anslcd_ioctl( struct inode * inode, struct file * file,
                 anslcd_write_byte_ctrl ( 0x06 );
                 anslcd_write_byte_ctrl ( 0x01 );
                 anslcd_write_byte_ctrl ( 0x02 );
-                return 0;
+                break;
         case ANSLCD_SENDCTRL:
                 temp = (char __user *) arg;
                 __get_user(ch, temp);
@@ -101,33 +106,37 @@ anslcd_ioctl( struct inode * inode, struct file * file,
                         anslcd_write_byte_ctrl ( ch );
                         __get_user(ch, temp);
                 }
-                return 0;
+                break;
         case ANSLCD_SETSHORTDELAY:
                 if (!capable(CAP_SYS_ADMIN))
-                        return -EACCES;
-                anslcd_short_delay=arg;
-                return 0;
+                        ret =-EACCES;
+                else
+                        anslcd_short_delay=arg;
+                break;
         case ANSLCD_SETLONGDELAY:
                 if (!capable(CAP_SYS_ADMIN))
-                        return -EACCES;
-                anslcd_long_delay=arg;
-                return 0;
+                        ret = -EACCES;
+                else
+                        anslcd_long_delay=arg;
+                break;
         default:
-                return -EINVAL;
+                ret = -EINVAL;
         }
+
+        mutex_unlock(&anslcd_mutex);
+        return ret;
 }
 
 static int
 anslcd_open( struct inode * inode, struct file * file )
 {
-        cycle_kernel_lock();
         return 0;
 }
 
 const struct file_operations anslcd_fops = {
-        .write  = anslcd_write,
-        .ioctl  = anslcd_ioctl,
-        .open   = anslcd_open,
+        .write          = anslcd_write,
+        .unlocked_ioctl = anslcd_ioctl,
+        .open           = anslcd_open,
 };
 
 static struct miscdevice anslcd_dev = {
@@ -168,6 +177,7 @@ anslcd_init(void)
         printk(KERN_DEBUG "LCD: init\n");
 #endif
 
+        mutex_lock(&anslcd_mutex);
         anslcd_write_byte_ctrl ( 0x38 );
         anslcd_write_byte_ctrl ( 0x0c );
         anslcd_write_byte_ctrl ( 0x06 );
@@ -176,6 +186,7 @@ anslcd_init(void)
         for(a=0;a<80;a++) {
                 anslcd_write_byte_data(anslcd_logo[a]);
         }
+        mutex_unlock(&anslcd_mutex);
         return 0;
 }
 
diff --git a/drivers/parisc/eisa_eeprom.c b/drivers/parisc/eisa_eeprom.c
index 8c0b26e9b98a..cce00ed81f37 100644
--- a/drivers/parisc/eisa_eeprom.c
+++ b/drivers/parisc/eisa_eeprom.c
@@ -75,17 +75,8 @@ static ssize_t eisa_eeprom_read(struct file * file,
         return ret;
 }
 
-static int eisa_eeprom_ioctl(struct inode *inode, struct file *file, 
-                           unsigned int cmd,
-                           unsigned long arg)
-{
-        return -ENOTTY;
-}
-
 static int eisa_eeprom_open(struct inode *inode, struct file *file)
 {
-        cycle_kernel_lock();
-
         if (file->f_mode & FMODE_WRITE)
                 return -EINVAL;
    
@@ -104,7 +95,6 @@ static const struct file_operations eisa_eeprom_fops = {
         .owner =        THIS_MODULE,
         .llseek =       eisa_eeprom_llseek,
         .read =         eisa_eeprom_read,
-        .ioctl =        eisa_eeprom_ioctl,
         .open =         eisa_eeprom_open,
         .release =      eisa_eeprom_release,
 };
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 5d23983f02fc..815a65012cbf 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -30,7 +30,6 @@
 #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>
@@ -477,7 +476,6 @@ 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) {
@@ -503,7 +501,6 @@ 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;
 }