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ethercat
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Implemented tty put_char and break_ctl callbacks for kernels newer than 2.6.26 

or 2.6.27, respectively.
This commit is contained in:
Florian Pose 2010-01-08 10:34:29 +01:00
parent a163d3f1bd
commit 386ba8b8ee
1 changed files with 19 additions and 0 deletions
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19
tty/module.c
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@ -40,6 +40,7 @@
#include <linux/tty_flip.h>
#include <linux/termios.h>
#include <linux/timer.h>
#include <linux/version.h>
#include "../master/globals.h"
#include "../include/ectty.h"
@ -379,7 +380,11 @@ static int ec_tty_write(
/*****************************************************************************/
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
static int ec_tty_put_char(struct tty_struct *tty, unsigned char ch)
#else
static void ec_tty_put_char(struct tty_struct *tty, unsigned char ch)
#endif
{
ec_tty_t *t = (ec_tty_t *) tty->driver_data;
@ -390,8 +395,14 @@ static void ec_tty_put_char(struct tty_struct *tty, unsigned char ch)
if (ec_tty_tx_space(t)) {
t->tx_buffer[t->tx_write_idx] = ch;
t->tx_write_idx = (t->tx_write_idx + 1) % EC_TTY_TX_BUFFER_SIZE;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
return 1;
#endif
} else {
printk(KERN_WARNING PFX "%s(): Dropped a byte!\n", __func__);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 26)
return 0;
#endif
}
}
@ -506,11 +517,19 @@ static void ec_tty_hangup(struct tty_struct *tty)
/*****************************************************************************/
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
static int ec_tty_break(struct tty_struct *tty, int break_state)
#else
static void ec_tty_break(struct tty_struct *tty, int break_state)
#endif
{
#if EC_TTY_DEBUG >= 2
printk(KERN_INFO PFX "%s(break_state = %i).\n", __func__, break_state);
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
return -EIO; // not implemented
#endif
}
/*****************************************************************************/