GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-14 18:49:15 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[PATCH] Char: mxser_new, revert spin_lock changes

Browse source 
Some spinlock changes were introduced in 1.9.1 original moxa driver.  Revert
them, since they cause machine not responding.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jiri Slaby 2006-12-08 02:38:18 -08:00 • committed by Linus Torvalds
parent 06cc86b5bd
commit eba529ecf7
1 changed files with 0 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
drivers/char/mxser_new.c
View file

@ -1687,22 +1687,12 @@ static void mxser_startrx(struct tty_struct *tty)
*/ */
static void mxser_throttle(struct tty_struct *tty) static void mxser_throttle(struct tty_struct *tty)
{ {
struct mxser_port *info = tty->driver_data;
unsigned long flags;
spin_lock_irqsave(&info->slock, flags);
mxser_stoprx(tty); mxser_stoprx(tty);
spin_unlock_irqrestore(&info->slock, flags);
} }
static void mxser_unthrottle(struct tty_struct *tty) static void mxser_unthrottle(struct tty_struct *tty)
{ {
struct mxser_port *info = tty->driver_data;
unsigned long flags;
spin_lock_irqsave(&info->slock, flags);
mxser_startrx(tty); mxser_startrx(tty);
spin_unlock_irqrestore(&info->slock, flags);
} }
static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios) static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios)
@ -1930,7 +1920,6 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
} }
/* above add by Victor Yu. 09-13-2002 */ /* above add by Victor Yu. 09-13-2002 */
spin_lock(&port->slock);
/* following add by Victor Yu. 09-02-2002 */ /* following add by Victor Yu. 09-02-2002 */
status = inb(port->ioaddr + UART_LSR); status = inb(port->ioaddr + UART_LSR);
@ -1981,7 +1970,6 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
if (status & UART_LSR_THRE) if (status & UART_LSR_THRE)
mxser_transmit_chars(port); mxser_transmit_chars(port);
} }
spin_unlock(&port->slock);
} while (int_cnt++ < MXSER_ISR_PASS_LIMIT); } while (int_cnt++ < MXSER_ISR_PASS_LIMIT);
} }
if (pass_counter++ > MXSER_ISR_PASS_LIMIT) if (pass_counter++ > MXSER_ISR_PASS_LIMIT)