[SERIAL] convert uart_state.sem to uart_state.mutex
semaphore to mutex conversion.
the conversion was generated via scripts, and the result was validated
automatically via a script as well.
build and boot tested.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/serial/pmac_zilog.c b/drivers/serial/pmac_zilog.c
index 5f52883..4e03a87 100644
--- a/drivers/serial/pmac_zilog.c
+++ b/drivers/serial/pmac_zilog.c
@@ -69,7 +69,6 @@
#include <asm/pmac_feature.h>
#include <asm/dbdma.h>
#include <asm/macio.h>
-#include <asm/semaphore.h>
#if defined (CONFIG_SERIAL_PMACZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
@@ -1593,7 +1592,7 @@
state = pmz_uart_reg.state + uap->port.line;
mutex_lock(&pmz_irq_mutex);
- down(&state->sem);
+ mutex_lock(&state->mutex);
spin_lock_irqsave(&uap->port.lock, flags);
@@ -1624,7 +1623,7 @@
/* Shut the chip down */
pmz_set_scc_power(uap, 0);
- up(&state->sem);
+ mutex_unlock(&state->mutex);
mutex_unlock(&pmz_irq_mutex);
pmz_debug("suspend, switching complete\n");
@@ -1653,7 +1652,7 @@
state = pmz_uart_reg.state + uap->port.line;
mutex_lock(&pmz_irq_mutex);
- down(&state->sem);
+ mutex_lock(&state->mutex);
spin_lock_irqsave(&uap->port.lock, flags);
if (!ZS_IS_OPEN(uap) && !ZS_IS_CONS(uap)) {
@@ -1685,7 +1684,7 @@
}
bail:
- up(&state->sem);
+ mutex_unlock(&state->mutex);
mutex_unlock(&pmz_irq_mutex);
/* Right now, we deal with delay by blocking here, I'll be
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 2ca6209..9437704 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -638,7 +638,7 @@
* module insertion/removal doesn't change anything
* under us.
*/
- down(&state->sem);
+ mutex_lock(&state->mutex);
change_irq = new_serial.irq != port->irq;
@@ -797,7 +797,7 @@
} else
retval = uart_startup(state, 1);
exit:
- up(&state->sem);
+ mutex_unlock(&state->mutex);
return retval;
}
@@ -834,7 +834,7 @@
struct uart_port *port = state->port;
int result = -EIO;
- down(&state->sem);
+ mutex_lock(&state->mutex);
if ((!file || !tty_hung_up_p(file)) &&
!(tty->flags & (1 << TTY_IO_ERROR))) {
result = port->mctrl;
@@ -843,7 +843,7 @@
result |= port->ops->get_mctrl(port);
spin_unlock_irq(&port->lock);
}
- up(&state->sem);
+ mutex_unlock(&state->mutex);
return result;
}
@@ -856,13 +856,13 @@
struct uart_port *port = state->port;
int ret = -EIO;
- down(&state->sem);
+ mutex_lock(&state->mutex);
if ((!file || !tty_hung_up_p(file)) &&
!(tty->flags & (1 << TTY_IO_ERROR))) {
uart_update_mctrl(port, set, clear);
ret = 0;
}
- up(&state->sem);
+ mutex_unlock(&state->mutex);
return ret;
}
@@ -873,12 +873,12 @@
BUG_ON(!kernel_locked());
- down(&state->sem);
+ mutex_lock(&state->mutex);
if (port->type != PORT_UNKNOWN)
port->ops->break_ctl(port, break_state);
- up(&state->sem);
+ mutex_unlock(&state->mutex);
}
static int uart_do_autoconfig(struct uart_state *state)
@@ -894,7 +894,7 @@
* changing, and hence any extra opens of the port while
* we're auto-configuring.
*/
- if (down_interruptible(&state->sem))
+ if (mutex_lock_interruptible(&state->mutex))
return -ERESTARTSYS;
ret = -EBUSY;
@@ -920,7 +920,7 @@
ret = uart_startup(state, 1);
}
- up(&state->sem);
+ mutex_unlock(&state->mutex);
return ret;
}
@@ -1074,7 +1074,7 @@
if (ret != -ENOIOCTLCMD)
goto out;
- down(&state->sem);
+ mutex_lock(&state->mutex);
if (tty_hung_up_p(filp)) {
ret = -EIO;
@@ -1098,7 +1098,7 @@
}
}
out_up:
- up(&state->sem);
+ mutex_unlock(&state->mutex);
out:
return ret;
}
@@ -1186,7 +1186,7 @@
DPRINTK("uart_close(%d) called\n", port->line);
- down(&state->sem);
+ mutex_lock(&state->mutex);
if (tty_hung_up_p(filp))
goto done;
@@ -1260,7 +1260,7 @@
wake_up_interruptible(&state->info->open_wait);
done:
- up(&state->sem);
+ mutex_unlock(&state->mutex);
}
static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
@@ -1334,7 +1334,7 @@
BUG_ON(!kernel_locked());
DPRINTK("uart_hangup(%d)\n", state->port->line);
- down(&state->sem);
+ mutex_lock(&state->mutex);
if (state->info && state->info->flags & UIF_NORMAL_ACTIVE) {
uart_flush_buffer(tty);
uart_shutdown(state);
@@ -1344,7 +1344,7 @@
wake_up_interruptible(&state->info->open_wait);
wake_up_interruptible(&state->info->delta_msr_wait);
}
- up(&state->sem);
+ mutex_unlock(&state->mutex);
}
/*
@@ -1447,9 +1447,9 @@
if (mctrl & TIOCM_CAR)
break;
- up(&state->sem);
+ mutex_unlock(&state->mutex);
schedule();
- down(&state->sem);
+ mutex_lock(&state->mutex);
if (signal_pending(current))
break;
@@ -1475,7 +1475,7 @@
mutex_lock(&port_mutex);
state = drv->state + line;
- if (down_interruptible(&state->sem)) {
+ if (mutex_lock_interruptible(&state->mutex)) {
state = ERR_PTR(-ERESTARTSYS);
goto out;
}
@@ -1483,7 +1483,7 @@
state->count++;
if (!state->port) {
state->count--;
- up(&state->sem);
+ mutex_unlock(&state->mutex);
state = ERR_PTR(-ENXIO);
goto out;
}
@@ -1504,7 +1504,7 @@
(unsigned long)state);
} else {
state->count--;
- up(&state->sem);
+ mutex_unlock(&state->mutex);
state = ERR_PTR(-ENOMEM);
}
}
@@ -1571,7 +1571,7 @@
if (tty_hung_up_p(filp)) {
retval = -EAGAIN;
state->count--;
- up(&state->sem);
+ mutex_unlock(&state->mutex);
goto fail;
}
@@ -1591,7 +1591,7 @@
*/
if (retval == 0)
retval = uart_block_til_ready(filp, state);
- up(&state->sem);
+ mutex_unlock(&state->mutex);
/*
* If this is the first open to succeed, adjust things to suit.
@@ -1867,7 +1867,7 @@
{
struct uart_state *state = drv->state + port->line;
- down(&state->sem);
+ mutex_lock(&state->mutex);
if (state->info && state->info->flags & UIF_INITIALIZED) {
struct uart_ops *ops = port->ops;
@@ -1896,7 +1896,7 @@
uart_change_pm(state, 3);
- up(&state->sem);
+ mutex_unlock(&state->mutex);
return 0;
}
@@ -1905,7 +1905,7 @@
{
struct uart_state *state = drv->state + port->line;
- down(&state->sem);
+ mutex_lock(&state->mutex);
uart_change_pm(state, 0);
@@ -1954,7 +1954,7 @@
}
}
- up(&state->sem);
+ mutex_unlock(&state->mutex);
return 0;
}
@@ -2049,7 +2049,7 @@
if (info && info->tty)
tty_vhangup(info->tty);
- down(&state->sem);
+ mutex_lock(&state->mutex);
state->info = NULL;
@@ -2072,7 +2072,7 @@
kfree(info);
}
- up(&state->sem);
+ mutex_unlock(&state->mutex);
}
static struct tty_operations uart_ops = {
@@ -2161,7 +2161,7 @@
state->close_delay = 500; /* .5 seconds */
state->closing_wait = 30000; /* 30 seconds */
- init_MUTEX(&state->sem);
+ mutex_init(&state->mutex);
}
retval = tty_register_driver(normal);
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index a8187c3..ec35100 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -136,6 +136,7 @@
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/tty.h>
+#include <linux/mutex.h>
struct uart_port;
struct uart_info;
@@ -284,7 +285,7 @@
struct uart_info *info;
struct uart_port *port;
- struct semaphore sem;
+ struct mutex mutex;
};
#define UART_XMIT_SIZE PAGE_SIZE