Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (46 commits)
  mfd: Fix mismatch in twl4030 mutex lock-unlock
  mfd: twl6030-pwm.c needs MODULE_LICENSE
  mfd: Fix the omap-usb-host clock API usage on usbhs_disable()
  mfd: Acknowledge WM8994 IRQs before reporting
  mfd: Acknowlege all WM831x IRQs before we handle them
  mfd: Avoid two assignments if failures happen in tps65910_i2c_probe
  regulator: Storing tps65912 error codes in u8
  mfd: Don't leak init_data in tps65910_i2c_probe
  regulator: aat2870: Add AAT2870 regulator driver
  backlight: Add AAT2870 backlight driver
  mfd: Add AAT2870 mfd driver
  mfd: Remove dead code from max8997-irq
  mfd: Move TPS55910 Kconfig option
  mfd: Fix missing stmpe kerneldoc
  mfd: Fix off-by-one value range checking for tps65912_i2c_write
  mfd: Add devices for WM831x clocking module
  mfd: Remove comp{1,2}_threshold sysfs entries in tps65911_comparator_remove
  mfd: Don't ask about the TPS65912 core driver in Kconfig
  mfd: Fix off by one in WM831x IRQ code
  mfd: Add tps65921 support from twl-core
  ...

1 files changed, 11 insertions, 30 deletions

diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index 64748e42ac0..64bdeeb1c11 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -419,20 +419,13 @@ static ssize_t ab8500_bank_write(struct file *file,
 	size_t count, loff_t *ppos)
 {
 	struct device *dev = ((struct seq_file *)(file->private_data))->private;
-	char buf[32];
-	int buf_size;
 	unsigned long user_bank;
 	int err;
 
 	/* Get userspace string and assure termination */
-	buf_size = min(count, (sizeof(buf) - 1));
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-	buf[buf_size] = 0;
-
-	err = strict_strtoul(buf, 0, &user_bank);
+	err = kstrtoul_from_user(user_buf, count, 0, &user_bank);
 	if (err)
-		return -EINVAL;
+		return err;
 
 	if (user_bank >= AB8500_NUM_BANKS) {
 		dev_err(dev, "debugfs error input > number of banks\n");
@@ -441,7 +434,7 @@ static ssize_t ab8500_bank_write(struct file *file,
 
 	debug_bank = user_bank;
 
-	return buf_size;
+	return count;
 }
 
 static int ab8500_address_print(struct seq_file *s, void *p)
@@ -459,26 +452,20 @@ static ssize_t ab8500_address_write(struct file *file,
 	size_t count, loff_t *ppos)
 {
 	struct device *dev = ((struct seq_file *)(file->private_data))->private;
-	char buf[32];
-	int buf_size;
 	unsigned long user_address;
 	int err;
 
 	/* Get userspace string and assure termination */
-	buf_size = min(count, (sizeof(buf) - 1));
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-	buf[buf_size] = 0;
-
-	err = strict_strtoul(buf, 0, &user_address);
+	err = kstrtoul_from_user(user_buf, count, 0, &user_address);
 	if (err)
-		return -EINVAL;
+		return err;
+
 	if (user_address > 0xff) {
 		dev_err(dev, "debugfs error input > 0xff\n");
 		return -EINVAL;
 	}
 	debug_address = user_address;
-	return buf_size;
+	return count;
 }
 
 static int ab8500_val_print(struct seq_file *s, void *p)
@@ -509,20 +496,14 @@ static ssize_t ab8500_val_write(struct file *file,
 	size_t count, loff_t *ppos)
 {
 	struct device *dev = ((struct seq_file *)(file->private_data))->private;
-	char buf[32];
-	int buf_size;
 	unsigned long user_val;
 	int err;
 
 	/* Get userspace string and assure termination */
-	buf_size = min(count, (sizeof(buf)-1));
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-	buf[buf_size] = 0;
-
-	err = strict_strtoul(buf, 0, &user_val);
+	err = kstrtoul_from_user(user_buf, count, 0, &user_val);
 	if (err)
-		return -EINVAL;
+		return err;
+
 	if (user_val > 0xff) {
 		dev_err(dev, "debugfs error input > 0xff\n");
 		return -EINVAL;
@@ -534,7 +515,7 @@ static ssize_t ab8500_val_write(struct file *file,
 		return -EINVAL;
 	}
 
-	return buf_size;
+	return count;
 }
 
 static const struct file_operations ab8500_bank_fops = {