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| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-07-25 01:48:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 10:53:43 -0700 |
| commit | 6d535d3e6ad395345750c361bd2b7f1b9429455d (patch) | |
| tree | c00178880958f2d81a1e57c5372e5cdfb828e60c /drivers/char/ppdev.c | |
| parent | e05e9f7c4aeb82eaa23e46b29580ff514590c641 (diff) | |
| download | op-kernel-dev-6d535d3e6ad395345750c361bd2b7f1b9429455d.zip op-kernel-dev-6d535d3e6ad395345750c361bd2b7f1b9429455d.tar.gz | |
ppdev: wrap ioctl handler in driver and push lock down
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/ppdev.c')
| -rw-r--r-- | drivers/char/ppdev.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index 7af7a7e..bee39fd 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -67,7 +67,7 @@ #include <linux/major.h> #include <linux/ppdev.h> #include <linux/smp_lock.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #define PP_VERSION "ppdev: user-space parallel port driver" #define CHRDEV "ppdev" @@ -328,10 +328,9 @@ static enum ieee1284_phase init_phase (int mode) return IEEE1284_PH_FWD_IDLE; } -static int pp_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static int pp_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - unsigned int minor = iminor(inode); + unsigned int minor = iminor(file->f_path.dentry->d_inode); struct pp_struct *pp = file->private_data; struct parport * port; void __user *argp = (void __user *)arg; @@ -634,6 +633,15 @@ static int pp_ioctl(struct inode *inode, struct file *file, return 0; } +static long pp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + long ret; + lock_kernel(); + ret = pp_do_ioctl(file, cmd, arg); + unlock_kernel(); + return ret; +} + static int pp_open (struct inode * inode, struct file * file) { unsigned int minor = iminor(inode); @@ -745,7 +753,7 @@ static const struct file_operations pp_fops = { .read = pp_read, .write = pp_write, .poll = pp_poll, - .ioctl = pp_ioctl, + .unlocked_ioctl = pp_ioctl, .open = pp_open, .release = pp_release, }; |
