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| author | Alan Cox <alan@linux.intel.com> | 2010-01-04 16:19:55 +0000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-01-04 12:31:21 -0800 |
| commit | 3e8d95d95eaf4b332f6e1862ffbaa80c24780767 (patch) | |
| tree | 09d19836af678e148f60e6e16c8b23e6166d3076 /drivers/char/toshiba.c | |
| parent | 5d9d6e44ce15d072d22c10fe670679c77fa2b31d (diff) | |
| download | linux-3e8d95d95eaf4b332f6e1862ffbaa80c24780767.tar.gz linux-3e8d95d95eaf4b332f6e1862ffbaa80c24780767.tar.bz2 linux-3e8d95d95eaf4b332f6e1862ffbaa80c24780767.zip | |
tosh: Use non bkl ioctl
We wrap the smm calls and other bits with the BKL push down as a
precaution but they can probably go
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/toshiba.c')
| -rw-r--r-- | drivers/char/toshiba.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/char/toshiba.c b/drivers/char/toshiba.c index 663cd15d7c78..f8bc79f6de34 100644 --- a/drivers/char/toshiba.c +++ b/drivers/char/toshiba.c @@ -68,7 +68,7 @@ #include <linux/stat.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> - +#include <linux/smp_lock.h> #include <linux/toshiba.h> #define TOSH_MINOR_DEV 181 @@ -88,13 +88,13 @@ static int tosh_date; static int tosh_sci; static int tosh_fan; -static int tosh_ioctl(struct inode *, struct file *, unsigned int, +static long tosh_ioctl(struct file *, unsigned int, unsigned long); static const struct file_operations tosh_fops = { .owner = THIS_MODULE, - .ioctl = tosh_ioctl, + .unlocked_ioctl = tosh_ioctl, }; static struct miscdevice tosh_device = { @@ -252,8 +252,7 @@ int tosh_smm(SMMRegisters *regs) EXPORT_SYMBOL(tosh_smm); -static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd, - unsigned long arg) +static long tosh_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) { SMMRegisters regs; SMMRegisters __user *argp = (SMMRegisters __user *)arg; @@ -275,13 +274,16 @@ static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd, return -EINVAL; /* do we need to emulate the fan ? */ + lock_kernel(); if (tosh_fan==1) { if (((ax==0xf300) || (ax==0xf400)) && (bx==0x0004)) { err = tosh_emulate_fan(®s); + unlock_kernel(); break; } } err = tosh_smm(®s); + unlock_kernel(); break; default: return -EINVAL; |