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authorHendrik Brueckner <brueckner@linux.vnet.ibm.com>2008-10-13 23:12:48 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-22 10:59:54 +1100
commitfc362e2e0efd8b652ebfb409a4e43e6189c04f6f (patch)
tree9cffc84bcc4e615ee08f0f47ff58a7131b55194a /drivers/char
parenta02efb906d12c9d4eb2ab7c59049ba9545e5412d (diff)
downloadop-kernel-dev-fc362e2e0efd8b652ebfb409a4e43e6189c04f6f.zip
op-kernel-dev-fc362e2e0efd8b652ebfb409a4e43e6189c04f6f.tar.gz
hvc_console: Add a hangup notifier for backends
I have added a hangup notifier that can be used by hvc console backends to handle a tty hangup. The default irq hangup notifier calls the notifier_del_irq() for compatibility. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hvc_console.c4
-rw-r--r--drivers/char/hvc_console.h4
-rw-r--r--drivers/char/hvc_irq.c5
-rw-r--r--drivers/char/hvc_iseries.c1
-rw-r--r--drivers/char/hvc_vio.c1
-rw-r--r--drivers/char/hvc_xen.c1
-rw-r--r--drivers/char/virtio_console.c1
7 files changed, 14 insertions, 3 deletions
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index bf70450..5c9750e 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -418,8 +418,8 @@ static void hvc_hangup(struct tty_struct *tty)
spin_unlock_irqrestore(&hp->lock, flags);
- if (hp->ops->notifier_del)
- hp->ops->notifier_del(hp, hp->data);
+ if (hp->ops->notifier_hangup)
+ hp->ops->notifier_hangup(hp, hp->data);
while(temp_open_count) {
--temp_open_count;
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h
index 9790201..ec0e9bb 100644
--- a/drivers/char/hvc_console.h
+++ b/drivers/char/hvc_console.h
@@ -65,9 +65,10 @@ struct hv_ops {
int (*get_chars)(uint32_t vtermno, char *buf, int count);
int (*put_chars)(uint32_t vtermno, const char *buf, int count);
- /* Callbacks for notification. Called in open and close */
+ /* Callbacks for notification. Called in open, close and hangup */
int (*notifier_add)(struct hvc_struct *hp, int irq);
void (*notifier_del)(struct hvc_struct *hp, int irq);
+ void (*notifier_hangup)(struct hvc_struct *hp, int irq);
};
/* Register a vterm and a slot index for use as a console (console_init) */
@@ -86,6 +87,7 @@ void hvc_kick(void);
/* default notifier for irq based notification */
extern int notifier_add_irq(struct hvc_struct *hp, int data);
extern void notifier_del_irq(struct hvc_struct *hp, int data);
+extern void notifier_hangup_irq(struct hvc_struct *hp, int data);
#if defined(CONFIG_XMON) && defined(CONFIG_SMP)
diff --git a/drivers/char/hvc_irq.c b/drivers/char/hvc_irq.c
index 73a59cd..d09e568 100644
--- a/drivers/char/hvc_irq.c
+++ b/drivers/char/hvc_irq.c
@@ -42,3 +42,8 @@ void notifier_del_irq(struct hvc_struct *hp, int irq)
free_irq(irq, hp);
hp->irq_requested = 0;
}
+
+void notifier_hangup_irq(struct hvc_struct *hp, int irq)
+{
+ notifier_del_irq(hp, irq);
+}
diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c
index b71c610..b74a2f8 100644
--- a/drivers/char/hvc_iseries.c
+++ b/drivers/char/hvc_iseries.c
@@ -202,6 +202,7 @@ static struct hv_ops hvc_get_put_ops = {
.put_chars = put_chars,
.notifier_add = notifier_add_irq,
.notifier_del = notifier_del_irq,
+ .notifier_hangup = notifier_hangup_irq,
};
static int __devinit hvc_vio_probe(struct vio_dev *vdev,
diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c
index 93f3840..019e0b5 100644
--- a/drivers/char/hvc_vio.c
+++ b/drivers/char/hvc_vio.c
@@ -82,6 +82,7 @@ static struct hv_ops hvc_get_put_ops = {
.put_chars = hvc_put_chars,
.notifier_add = notifier_add_irq,
.notifier_del = notifier_del_irq,
+ .notifier_hangup = notifier_hangup_irq,
};
static int __devinit hvc_vio_probe(struct vio_dev *vdev,
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c
index 538ceea..eba999f 100644
--- a/drivers/char/hvc_xen.c
+++ b/drivers/char/hvc_xen.c
@@ -102,6 +102,7 @@ static struct hv_ops hvc_ops = {
.put_chars = write_console,
.notifier_add = notifier_add_irq,
.notifier_del = notifier_del_irq,
+ .notifier_hangup = notifier_hangup_irq,
};
static int __init xen_init(void)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index d0f4eb6..3fb0d2c 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -198,6 +198,7 @@ static int __devinit virtcons_probe(struct virtio_device *dev)
virtio_cons.put_chars = put_chars;
virtio_cons.notifier_add = notifier_add_vio;
virtio_cons.notifier_del = notifier_del_vio;
+ virtio_cons.notifier_hangup = notifier_del_vio;
/* The first argument of hvc_alloc() is the virtual console number, so
* we use zero. The second argument is the parameter for the
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