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TTY: simserial/amiserial, use one instance of other members 

This means:
* close_delay
* closing_wait
* line
* port
* xmit_fifo_size

This actually fixes a bug in amiserial. It initializes one and uses
the other of the close delays. Yes, duplicating structure members is
evil.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Jiri Slaby 2012-03-05 14:52:16 +01:00 committed by Greg Kroah-Hartman
parent 979b6d8976
commit d852256389
3 changed files with 11 additions and 22 deletions
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9
arch/ia64/hp/sim/simserial.c
View File

@ -553,7 +553,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
}
if (--state->count < 0) {
printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
info->line, state->count);
state->line, state->count);
state->count = 0;
}
if (state->count) {
@ -572,8 +572,8 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
tty_ldisc_flush(tty);
info->tty = NULL;
if (info->blocked_open) {
if (info->close_delay)
schedule_timeout_interruptible(info->close_delay);
if (state->close_delay)
schedule_timeout_interruptible(state->close_delay);
wake_up_interruptible(&info->open_wait);
}
state->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
@ -630,9 +630,6 @@ static int get_async_struct(int line, struct async_struct **ret_info)
}
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
info->port = sstate->port;
info->xmit_fifo_size = sstate->xmit_fifo_size;
info->line = line;
info->state = sstate;
if (sstate->info) {
kfree(info);

19
drivers/tty/amiserial.c
View File

@ -723,7 +723,7 @@ static void change_speed(struct async_struct *info,
if (!quot)
quot = baud_base / 9600;
info->quot = quot;
info->timeout = ((info->xmit_fifo_size*HZ*bits*quot) / baud_base);
info->timeout = ((info->state->xmit_fifo_size*HZ*bits*quot) / baud_base);
info->timeout += HZ/50; /* Add .02 seconds of slop */
/* CTS flow control flag and modem status interrupts */
@ -1425,7 +1425,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
}
if (--state->count < 0) {
printk("rs_close: bad serial port count for ttys%d: %d\n",
info->line, state->count);
state->line, state->count);
state->count = 0;
}
if (state->count) {
@ -1439,8 +1439,8 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
* the line discipline to only process XON/XOFF characters.
*/
tty->closing = 1;
if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, info->closing_wait);
if (state->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, state->closing_wait);
/*
* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
@ -1470,8 +1470,8 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
tty->closing = 0;
info->tty = NULL;
if (info->blocked_open) {
if (info->close_delay) {
msleep_interruptible(jiffies_to_msecs(info->close_delay));
if (state->close_delay) {
msleep_interruptible(jiffies_to_msecs(state->close_delay));
}
wake_up_interruptible(&info->open_wait);
}
@ -1492,7 +1492,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent"))
return;
if (info->xmit_fifo_size == 0)
if (info->state->xmit_fifo_size == 0)
return; /* Just in case.... */
orig_jiffies = jiffies;
@ -1505,7 +1505,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
* Note: we have to use pretty tight timings here to satisfy
* the NIST-PCTS.
*/
char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
char_time = (info->timeout - HZ/50) / info->state->xmit_fifo_size;
char_time = char_time / 5;
if (char_time == 0)
char_time = 1;
@ -1700,9 +1700,6 @@ static int get_async_struct(int line, struct async_struct **ret_info)
init_waitqueue_head(&info->close_wait);
init_waitqueue_head(&info->delta_msr_wait);
#endif
info->port = sstate->port;
info->xmit_fifo_size = sstate->xmit_fifo_size;
info->line = line;
info->state = sstate;
if (sstate->info) {
kfree(info);

5
include/linux/serialP.h
View File

@ -42,8 +42,6 @@ struct serial_state {
};
struct async_struct {
unsigned long port;
int xmit_fifo_size;
struct serial_state *state;
struct tty_struct *tty;
int read_status_mask;
@ -51,11 +49,8 @@ struct async_struct {
int timeout;
int quot;
int x_char; /* xon/xoff character */
int close_delay;
unsigned short closing_wait;
int IER; /* Interrupt Enable Register */
int MCR; /* Modem control register */
int line;
int blocked_open; /* # of blocked opens */
struct circ_buf xmit;
wait_queue_head_t open_wait;