[POC][PATCH 12/83] drivers/tty: get rid of pointless casts

[Al Viro <viro@ZenIV.linux.org.uk>]

From: Al Viro <viro@zeniv.linux.org.uk>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 drivers/tty/amiserial.c          | 10 +++++-----
 drivers/tty/cyclades.c           | 10 +++++-----
 drivers/tty/mxser.c              |  8 ++++----
 drivers/tty/rocket.c             |  8 ++++----
 drivers/tty/serial/crisv10.c     | 10 +++++-----
 drivers/tty/serial/serial_core.c |  6 +++---
 drivers/tty/tty_port.c           |  2 +-
 7 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index ec87a8c..43605c9 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -518,23 +518,23 @@ static int startup(struct tty_struct *tty, struct serial_state *info)
 	struct tty_port *port = &info->tport;
 	unsigned long flags;
 	int	retval=0;
-	unsigned long page;
+	unsigned char *page;
 
-	page = (unsigned long)get_zeroed_page(GFP_KERNEL);
+	page = get_zeroed_page(GFP_KERNEL);
 	if (!page)
 		return -ENOMEM;
 
 	local_irq_save(flags);
 
 	if (port->flags & ASYNC_INITIALIZED) {
-		free_page((void *)page);
+		free_page(page);
 		goto errout;
 	}
 
 	if (info->xmit.buf)
-		free_page((void *)page);
+		free_page(page);
 	else
-		info->xmit.buf = (unsigned char *) page;
+		info->xmit.buf = page;
 
 #ifdef SERIAL_DEBUG_OPEN
 	printk("starting up ttys%d ...", info->line);
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index 7e3bee8..fa4edc1 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -1268,12 +1268,12 @@ static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
 	unsigned long flags;
 	int retval = 0;
 	int channel;
-	unsigned long page;
+	unsigned char *page;
 
 	card = info->card;
 	channel = info->line - card->first_line;
 
-	page = (unsigned long)get_zeroed_page(GFP_KERNEL);
+	page = get_zeroed_page(GFP_KERNEL);
 	if (!page)
 		return -ENOMEM;
 
@@ -1288,9 +1288,9 @@ static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
 	}
 
 	if (info->port.xmit_buf)
-		free_page((void *)page);
+		free_page(page);
 	else
-		info->port.xmit_buf = (unsigned char *)page;
+		info->port.xmit_buf = page;
 
 	spin_unlock_irqrestore(&card->card_lock, flags);
 
@@ -1383,7 +1383,7 @@ static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
 
 errout:
 	spin_unlock_irqrestore(&card->card_lock, flags);
-	free_page((void *)page);
+	free_page(page);
 	return retval;
 }				/* startup */
 
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index b730857..ee78fc2 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -862,10 +862,10 @@ static void mxser_check_modem_status(struct tty_struct *tty,
 static int mxser_activate(struct tty_port *port, struct tty_struct *tty)
 {
 	struct mxser_port *info = container_of(port, struct mxser_port, port);
-	unsigned long page;
+	unsigned char *page;
 	unsigned long flags;
 
-	page = __get_free_page(GFP_KERNEL);
+	page = (unsigned char *)__get_free_page(GFP_KERNEL);
 	if (!page)
 		return -ENOMEM;
 
@@ -873,11 +873,11 @@ static int mxser_activate(struct tty_port *port, struct tty_struct *tty)
 
 	if (!info->ioaddr || !info->type) {
 		set_bit(TTY_IO_ERROR, &tty->flags);
-		free_page((void *)page);
+		free_page(page);
 		spin_unlock_irqrestore(&info->slock, flags);
 		return 0;
 	}
-	info->port.xmit_buf = (unsigned char *) page;
+	info->port.xmit_buf = page;
 
 	/*
 	 * Clear the FIFO buffers and disable them
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 2ed96e3..78f0330 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -884,14 +884,14 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
 	struct tty_port *port;
 	int retval;
 	CHANNEL_t *cp;
-	unsigned long page;
+	unsigned char *page;
 
 	info = rp_table[tty->index];
 	if (info == NULL)
 		return -ENXIO;
 	port = &info->port;
 	
-	page = __get_free_page(GFP_KERNEL);
+	page = (unsigned char *)__get_free_page(GFP_KERNEL);
 	if (!page)
 		return -ENOMEM;
 
@@ -899,9 +899,9 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
 	 * We must not sleep from here until the port is marked fully in use.
 	 */
 	if (info->xmit_buf)
-		free_page((void *)page);
+		free_page(page);
 	else
-		info->xmit_buf = (unsigned char *) page;
+		info->xmit_buf = page;
 
 	tty->driver_data = info;
 	tty_port_tty_set(port, tty);
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 82a868d..8cc4d1f 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -2590,10 +2590,10 @@ static int
 startup(struct e100_serial * info)
 {
 	unsigned long flags;
-	unsigned long xmit_page;
+	unsigned char *xmit_page;
 	int i;
 
-	xmit_page = (unsigned long)get_zeroed_page(GFP_KERNEL);
+	xmit_page = get_zeroed_page(GFP_KERNEL);
 	if (!xmit_page)
 		return -ENOMEM;
 
@@ -2603,14 +2603,14 @@ startup(struct e100_serial * info)
 
 	if (info->port.flags & ASYNC_INITIALIZED) {
 		local_irq_restore(flags);
-		free_page((void *)xmit_page);
+		free_page(xmit_page);
 		return 0;
 	}
 
 	if (info->xmit.buf)
-		free_page((void *)xmit_page);
+		free_page(xmit_page);
 	else
-		info->xmit.buf = (unsigned char *) xmit_page;
+		info->xmit.buf = xmit_page;
 
 #ifdef SERIAL_DEBUG_OPEN
 	printk("starting up ttyS%d (xmit_buf 0x%p)...\n", info->line, info->xmit.buf);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 3cdd727..a16d25e 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -135,7 +135,7 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
 		int init_hw)
 {
 	struct uart_port *uport = state->uart_port;
-	unsigned long page;
+	unsigned char *page;
 	int retval = 0;
 
 	if (uport->type == PORT_UNKNOWN)
@@ -152,11 +152,11 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
 	 */
 	if (!state->xmit.buf) {
 		/* This is protected by the per port mutex */
-		page = (unsigned long)get_zeroed_page(GFP_KERNEL);
+		page = get_zeroed_page(GFP_KERNEL);
 		if (!page)
 			return -ENOMEM;
 
-		state->xmit.buf = (unsigned char *) page;
+		state->xmit.buf = page;
 		uart_circ_clear(&state->xmit);
 	}
 
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 3fe48c7..ad4bee7 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -101,7 +101,7 @@ int tty_port_alloc_xmit_buf(struct tty_port *port)
 	/* We may sleep in get_zeroed_page() */
 	mutex_lock(&port->buf_mutex);
 	if (port->xmit_buf == NULL)
-		port->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL);
+		port->xmit_buf = get_zeroed_page(GFP_KERNEL);
 	mutex_unlock(&port->buf_mutex);
 	if (port->xmit_buf == NULL)
 		return -ENOMEM;
-- 
2.1.4