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In kernel 2.6.17 non-counting semaphores are replaced by mutexes, this patch
makes serialmidi driver to work with the changes.
Index: alsa-driver-1.0.11/drivers/serialmidi.c
===================================================================
--- alsa-driver-1.0.11.orig/drivers/serialmidi.c
+++ alsa-driver-1.0.11/drivers/serialmidi.c
@@ -314,12 +314,12 @@ static void tx_loop(serialmidi_t *serial
if (driver == NULL)
return;
- if (down_trylock(&tty->atomic_write))
+ if (!mutex_trylock(&tty->atomic_write_lock))
return;
while (1) {
count = driver->write_room(tty);
if (count <= 0) {
- up(&tty->atomic_write);
+ mutex_unlock(&tty->atomic_write_lock);
return;
}
count = count > TX_BUF_SIZE ? TX_BUF_SIZE : count;
@@ -336,7 +336,7 @@ static void tx_loop(serialmidi_t *serial
break;
}
}
- up(&tty->atomic_write);
+ mutex_unlock(&tty->atomic_write_lock);
}
static void ldisc_write_wakeup(struct tty_struct *tty)
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