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Subject[GIT pull] BKL removal in drivers for 2.6.33
Linus,

Please pull the latest bkl-drivers-for-linus git tree from:

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

Thanks,

tglx

------------------>
Frederic Weisbecker (3):
mem_class: Drop the bkl from memory_open()
nvram: Drop the bkl from nvram_llseek()
nvram: Drop the bkl from non-generic nvram_llseek()

John Kacur (1):
agp: Remove the BKL from agp_open

Thomas Gleixner (12):
drivers: Remove BKL from misc_open
drivers: Remove BKL from cs5535_gpio
spi: Remove BKL from spidev_open
macintosh: Remove BKL from ans-lcd
hw_random: Remove BKL from core
input: Remove BKL from hp_sdc_rtc
rtc: Remove BKL from efirtc
parisc: Remove BKL from eisa_eeprom
drivers: Remove BKL from pc8736x_gpio
drivers: Remove BKL from scx200_gpio
mips: Remove BKL from tb0219
inifiband: Remove BKL from ipath_open()


drivers/char/agp/frontend.c | 28 ++++++----------
drivers/char/cs5535_gpio.c | 3 +-
drivers/char/efirtc.c | 12 +------
drivers/char/generic_nvram.c | 9 ++---
drivers/char/hw_random/core.c | 1 -
drivers/char/mem.c | 17 +++-------
drivers/char/misc.c | 5 +--
drivers/char/nvram.c | 4 +--
drivers/char/pc8736x_gpio.c | 2 -
drivers/char/scx200_gpio.c | 2 -
drivers/char/tb0219.c | 6 +---
drivers/infiniband/hw/ipath/ipath_file_ops.c | 1 -
drivers/input/misc/hp_sdc_rtc.c | 2 -
drivers/macintosh/ans-lcd.c | 45 ++++++++++++++++----------
drivers/parisc/eisa_eeprom.c | 10 ------
drivers/spi/spidev.c | 3 --
16 files changed, 52 insertions(+), 98 deletions(-)

diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index a96f319..43412c0 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 04ba906..4d830dc 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 34d15d5..26a47dc 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 ef31738..fda4181 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 1573aeb..75fb859 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -87,7 +87,6 @@ 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 a074fce..ad82ec9 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 07fa612..96f1cd0 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 88cee40..2100a8f 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 3f7da8c..8ecbcc1 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 1d91005..99e5272 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 b3ec9b1..cad4eb6 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 40dbe54..73933a4 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 216a559..4d1aa9a 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 6a82218..a3d25da 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 8c0b26e..cce00ed 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 5d23983..815a650 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;
}


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