From 17a3596f2122b4d88dc0efe297aa2de7be1bb31c Mon Sep 17 00:00:00 2001 From: Bamvor Jian Zhang Date: Fri, 8 Jan 2016 15:50:49 +0800 Subject: [PATCH] ppdev: add support for compat ioctl The arg of ioctl in ppdev is the pointer of integer except the timeval in PPSETTIME, PPGETTIME. Different size of timeval is already supported by the previous patches. So, it is safe to add compat support. Signed-off-by: Bamvor Jian Zhang Reviewed-by: Arnd Bergmann Tested-by: Sudip Mukherjee Signed-off-by: Greg Kroah-Hartman --- drivers/char/ppdev.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/char/ppdev.c b/drivers/char/ppdev.c index c03d998731ea..9e98d0153148 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -69,6 +69,7 @@ #include #include #include +#include #define PP_VERSION "ppdev: user-space parallel port driver" #define CHRDEV "ppdev" @@ -670,6 +671,14 @@ static long pp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return ret; } +#ifdef CONFIG_COMPAT +static long pp_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + return pp_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); +} +#endif + static int pp_open (struct inode * inode, struct file * file) { unsigned int minor = iminor(inode); @@ -779,6 +788,9 @@ static const struct file_operations pp_fops = { .write = pp_write, .poll = pp_poll, .unlocked_ioctl = pp_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = pp_compat_ioctl, +#endif .open = pp_open, .release = pp_release, }; -- 2.30.2