[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 5f52883e64d2ade773b968edd967e395121a58bd..4e03a87f3fb48df3f70b505a2b89bb86f91b4584 100644 (file)
--- 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 @@ static int pmz_suspend(struct macio_dev *mdev, pm_message_t pm_state)
        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 @@ static int pmz_suspend(struct macio_dev *mdev, pm_message_t pm_state)
        /* 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 @@ static int pmz_resume(struct macio_dev *mdev)
        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 @@ static int pmz_resume(struct macio_dev *mdev)
        }
 
  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 2ca620900bcc24cf9b6f18850853597ddbbdaab2..943770470b9db316af2ed25cce1fca9296df43a2 100644 (file)
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -638,7 +638,7 @@ static int uart_set_info(struct uart_state *state,
         * 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 @@ static int uart_set_info(struct uart_state *state,
        } else
                retval = uart_startup(state, 1);
  exit:
-       up(&state->sem);
+       mutex_unlock(&state->mutex);
        return retval;
 }
 
@@ -834,7 +834,7 @@ static int uart_tiocmget(struct tty_struct *tty, struct file *file)
        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 @@ static int uart_tiocmget(struct tty_struct *tty, struct file *file)
                result |= port->ops->get_mctrl(port);
                spin_unlock_irq(&port->lock);
        }
-       up(&state->sem);
+       mutex_unlock(&state->mutex);
 
        return result;
 }
@@ -856,13 +856,13 @@ uart_tiocmset(struct tty_struct *tty, struct file *file,
        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 @@ static void uart_break_ctl(struct tty_struct *tty, int break_state)
 
        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 @@ static int uart_do_autoconfig(struct uart_state *state)
         * 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 @@ static int uart_do_autoconfig(struct uart_state *state)
 
                ret = uart_startup(state, 1);
        }
-       up(&state->sem);
+       mutex_unlock(&state->mutex);
        return ret;
 }
 
@@ -1074,7 +1074,7 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd,
        if (ret != -ENOIOCTLCMD)
                goto out;
 
-       down(&state->sem);
+       mutex_lock(&state->mutex);
 
        if (tty_hung_up_p(filp)) {
                ret = -EIO;
@@ -1098,7 +1098,7 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd,
        }
        }
  out_up:
-       up(&state->sem);
+       mutex_unlock(&state->mutex);
  out:
        return ret;
 }
@@ -1186,7 +1186,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
 
        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 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
        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 @@ static void uart_hangup(struct tty_struct *tty)
        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 @@ static void uart_hangup(struct tty_struct *tty)
                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 @@ uart_block_til_ready(struct file *filp, struct uart_state *state)
                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 @@ static struct uart_state *uart_get(struct uart_driver *drv, int line)
 
        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 @@ static struct uart_state *uart_get(struct uart_driver *drv, int line)
        state->count++;
        if (!state->port) {
                state->count--;
-               up(&state->sem);
+               mutex_unlock(&state->mutex);
                state = ERR_PTR(-ENXIO);
                goto out;
        }
@@ -1504,7 +1504,7 @@ static struct uart_state *uart_get(struct uart_driver *drv, int line)
                                     (unsigned long)state);
                } else {
                        state->count--;
-                       up(&state->sem);
+                       mutex_unlock(&state->mutex);
                        state = ERR_PTR(-ENOMEM);
                }
        }
@@ -1571,7 +1571,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
        if (tty_hung_up_p(filp)) {
                retval = -EAGAIN;
                state->count--;
-               up(&state->sem);
+               mutex_unlock(&state->mutex);
                goto fail;
        }
 
@@ -1591,7 +1591,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
         */
        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 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
 {
        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 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
 
        uart_change_pm(state, 3);
 
-       up(&state->sem);
+       mutex_unlock(&state->mutex);
 
        return 0;
 }
@@ -1905,7 +1905,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port)
 {
        struct uart_state *state = drv->state + port->line;
 
-       down(&state->sem);
+       mutex_lock(&state->mutex);
 
        uart_change_pm(state, 0);
 
@@ -1954,7 +1954,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port)
                }
        }
 
-       up(&state->sem);
+       mutex_unlock(&state->mutex);
 
        return 0;
 }
@@ -2049,7 +2049,7 @@ uart_unconfigure_port(struct uart_driver *drv, struct uart_state *state)
        if (info && info->tty)
                tty_vhangup(info->tty);
 
-       down(&state->sem);
+       mutex_lock(&state->mutex);
 
        state->info = NULL;
 
@@ -2072,7 +2072,7 @@ uart_unconfigure_port(struct uart_driver *drv, struct uart_state *state)
                kfree(info);
        }
 
-       up(&state->sem);
+       mutex_unlock(&state->mutex);
 }
 
 static struct tty_operations uart_ops = {
@@ -2161,7 +2161,7 @@ int uart_register_driver(struct uart_driver *drv)
                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 a8187c3c8a7b0606d4358ba392997011ea73d04c..ec351005bf9d9ccb5c521a9048dfdcad7c2db57b 100644 (file)
--- 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_state {
        struct uart_info        *info;
        struct uart_port        *port;
 
-       struct semaphore        sem;
+       struct mutex            mutex;
 };
 
 #define UART_XMIT_SIZE PAGE_SIZE