X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fchar%2Fhvc_console.c;h=a0a88aa23f5b751457e01470afbe6f06068678c9;hb=b4350861dd6d5668bb9fe18eec4227d30e9131b0;hp=613d67f1c7f06a054f1f8fdf78418cb8762afaac;hpb=35e4ddfc86df84d32fbd2b9ae3b0b0408afb7e3f;p=powerpc.git

diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 613d67f1c7..a0a88aa23f 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -38,6 +38,7 @@
 #include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/delay.h>
+#include <linux/freezer.h>
 
 #include <asm/uaccess.h>
 
@@ -80,7 +81,8 @@ struct hvc_struct {
 	struct tty_struct *tty;
 	unsigned int count;
 	int do_wakeup;
-	char outbuf[N_OUTBUF] __ALIGNED__;
+	char *outbuf;
+	int outbuf_size;
 	int n_outbuf;
 	uint32_t vtermno;
 	struct hv_ops *ops;
@@ -293,7 +295,7 @@ static int hvc_poll(struct hvc_struct *hp);
  * NOTE: This API isn't used if the console adapter doesn't support interrupts.
  * In this case the console is poll driven.
  */
-static irqreturn_t hvc_handle_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
+static irqreturn_t hvc_handle_interrupt(int irq, void *dev_instance)
 {
 	/* if hvc_poll request a repoll, then kick the hvcd thread */
 	if (hvc_poll(dev_instance))
@@ -314,15 +316,13 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 {
 	struct hvc_struct *hp;
 	unsigned long flags;
-	int irq = NO_IRQ;
+	int irq = 0;
 	int rc = 0;
 	struct kobject *kobjp;
 
 	/* Auto increments kobject reference if found. */
-	if (!(hp = hvc_get_by_index(tty->index))) {
-		printk(KERN_WARNING "hvc_console: tty open failed, no vty associated with tty.\n");
+	if (!(hp = hvc_get_by_index(tty->index)))
 		return -ENODEV;
-	}
 
 	spin_lock_irqsave(&hp->lock, flags);
 	/* Check and then increment for fast path open. */
@@ -338,14 +338,14 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 	hp->tty = tty;
 	/* Save for request_irq outside of spin_lock. */
 	irq = hp->irq;
-	if (irq != NO_IRQ)
+	if (irq)
 		hp->irq_requested = 1;
 
 	kobjp = &hp->kobj;
 
 	spin_unlock_irqrestore(&hp->lock, flags);
 	/* check error, fallback to non-irq */
-	if (irq != NO_IRQ)
+	if (irq)
 		rc = request_irq(irq, hvc_handle_interrupt, IRQF_DISABLED, "hvc_console", hp);
 
 	/*
@@ -373,7 +373,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
 {
 	struct hvc_struct *hp;
 	struct kobject *kobjp;
-	int irq = NO_IRQ;
+	int irq = 0;
 	unsigned long flags;
 
 	if (tty_hung_up_p(filp))
@@ -407,7 +407,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
 		 */
 		tty_wait_until_sent(tty, HVC_CLOSE_WAIT);
 
-		if (irq != NO_IRQ)
+		if (irq)
 			free_irq(irq, hp);
 
 	} else {
@@ -424,7 +424,7 @@ static void hvc_hangup(struct tty_struct *tty)
 {
 	struct hvc_struct *hp = tty->driver_data;
 	unsigned long flags;
-	int irq = NO_IRQ;
+	int irq = 0;
 	int temp_open_count;
 	struct kobject *kobjp;
 
@@ -453,7 +453,7 @@ static void hvc_hangup(struct tty_struct *tty)
 		irq = hp->irq;
 	hp->irq_requested = 0;
 	spin_unlock_irqrestore(&hp->lock, flags);
-	if (irq != NO_IRQ)
+	if (irq)
 		free_irq(irq, hp);
 	while(temp_open_count) {
 		--temp_open_count;
@@ -505,7 +505,7 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count
 	if (hp->n_outbuf > 0)
 		hvc_push(hp);
 
-	while (count > 0 && (rsize = N_OUTBUF - hp->n_outbuf) > 0) {
+	while (count > 0 && (rsize = hp->outbuf_size - hp->n_outbuf) > 0) {
 		if (rsize > count)
 			rsize = count;
 		memcpy(hp->outbuf + hp->n_outbuf, buf, rsize);
@@ -538,7 +538,7 @@ static int hvc_write_room(struct tty_struct *tty)
 	if (!hp)
 		return -1;
 
-	return N_OUTBUF - hp->n_outbuf;
+	return hp->outbuf_size - hp->n_outbuf;
 }
 
 static int hvc_chars_in_buffer(struct tty_struct *tty)
@@ -583,7 +583,7 @@ static int hvc_poll(struct hvc_struct *hp)
 	/* If we aren't interrupt driven and aren't throttled, we always
 	 * request a reschedule
 	 */
-	if (hp->irq == NO_IRQ)
+	if (hp->irq == 0)
 		poll_mask |= HVC_POLL_READ;
 
 	/* Read data if any */
@@ -622,7 +622,7 @@ static int hvc_poll(struct hvc_struct *hp)
 					sysrq_pressed = 1;
 					continue;
 				} else if (sysrq_pressed) {
-					handle_sysrq(buf[i], NULL, tty);
+					handle_sysrq(buf[i], tty);
 					sysrq_pressed = 0;
 					continue;
 				}
@@ -697,7 +697,7 @@ int khvcd(void *unused)
 	return 0;
 }
 
-static struct tty_operations hvc_ops = {
+static const struct tty_operations hvc_ops = {
 	.open = hvc_open,
 	.close = hvc_close,
 	.write = hvc_write,
@@ -729,12 +729,13 @@ static struct kobj_type hvc_kobj_type = {
 };
 
 struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq,
-					struct hv_ops *ops)
+					struct hv_ops *ops, int outbuf_size)
 {
 	struct hvc_struct *hp;
 	int i;
 
-	hp = kmalloc(sizeof(*hp), GFP_KERNEL);
+	hp = kmalloc(ALIGN(sizeof(*hp), sizeof(long)) + outbuf_size,
+			GFP_KERNEL);
 	if (!hp)
 		return ERR_PTR(-ENOMEM);
 
@@ -743,6 +744,8 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq,
 	hp->vtermno = vtermno;
 	hp->irq = irq;
 	hp->ops = ops;
+	hp->outbuf_size = outbuf_size;
+	hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeof(long))];
 
 	kobject_init(&hp->kobj);
 	hp->kobj.ktype = &hvc_kobj_type;