forked from Minki/linux
Char: mxser, ioctl cleanup
- remove break ctl from ioctl handler, it's never reached, since tty_ops->break_ctl is defined (mxser break handling is done in software) - mark MOXA_GET_MAJOR as deprecated - fix TIOCGICOUNT (some retval non-checks of put_user). Use copy_to_user to whole structure instead. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
6ee8928d94
commit
41aee9a121
@ -16,7 +16,6 @@
|
||||
* Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox
|
||||
* <alan@redhat.com>. The original 1.8 code is available on www.moxa.com.
|
||||
* - Fixed x86_64 cleanness
|
||||
* - Fixed sleep with spinlock held in mxser_send_break
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
@ -1634,6 +1633,8 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
|
||||
|
||||
switch (cmd) {
|
||||
case MOXA_GET_MAJOR:
|
||||
printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl %x, fix "
|
||||
"your userspace\n", current->comm, cmd);
|
||||
return put_user(ttymajor, (int __user *)argp);
|
||||
|
||||
case MOXA_CHKPORTENABLE:
|
||||
@ -1804,7 +1805,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
|
||||
{
|
||||
struct mxser_port *info = tty->driver_data;
|
||||
struct async_icount cnow;
|
||||
struct serial_icounter_struct __user *p_cuser;
|
||||
unsigned long flags;
|
||||
void __user *argp = (void __user *)arg;
|
||||
int retval;
|
||||
@ -1884,30 +1884,26 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
|
||||
* NB: both 1->0 and 0->1 transitions are counted except for
|
||||
* RI where only 0->1 is counted.
|
||||
*/
|
||||
case TIOCGICOUNT:
|
||||
case TIOCGICOUNT: {
|
||||
struct serial_icounter_struct icnt = { 0 };
|
||||
spin_lock_irqsave(&info->slock, flags);
|
||||
cnow = info->icount;
|
||||
spin_unlock_irqrestore(&info->slock, flags);
|
||||
p_cuser = argp;
|
||||
if (put_user(cnow.frame, &p_cuser->frame))
|
||||
return -EFAULT;
|
||||
if (put_user(cnow.brk, &p_cuser->brk))
|
||||
return -EFAULT;
|
||||
if (put_user(cnow.overrun, &p_cuser->overrun))
|
||||
return -EFAULT;
|
||||
if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
|
||||
return -EFAULT;
|
||||
if (put_user(cnow.parity, &p_cuser->parity))
|
||||
return -EFAULT;
|
||||
if (put_user(cnow.rx, &p_cuser->rx))
|
||||
return -EFAULT;
|
||||
if (put_user(cnow.tx, &p_cuser->tx))
|
||||
return -EFAULT;
|
||||
put_user(cnow.cts, &p_cuser->cts);
|
||||
put_user(cnow.dsr, &p_cuser->dsr);
|
||||
put_user(cnow.rng, &p_cuser->rng);
|
||||
put_user(cnow.dcd, &p_cuser->dcd);
|
||||
return 0;
|
||||
|
||||
icnt.frame = cnow.frame;
|
||||
icnt.brk = cnow.brk;
|
||||
icnt.overrun = cnow.overrun;
|
||||
icnt.buf_overrun = cnow.buf_overrun;
|
||||
icnt.parity = cnow.parity;
|
||||
icnt.rx = cnow.rx;
|
||||
icnt.tx = cnow.tx;
|
||||
icnt.cts = cnow.cts;
|
||||
icnt.dsr = cnow.dsr;
|
||||
icnt.rng = cnow.rng;
|
||||
icnt.dcd = cnow.dcd;
|
||||
|
||||
return copy_to_user(argp, &icnt, sizeof(icnt)) ? -EFAULT : 0;
|
||||
}
|
||||
case MOXA_HighSpeedOn:
|
||||
return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp);
|
||||
case MOXA_SDS_RSTICOUNTER:
|
||||
|
Loading…
Reference in New Issue
Block a user