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path: root/drivers/tty/hvc/hvcs.c
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Diffstat (limited to 'drivers/tty/hvc/hvcs.c')
-rw-r--r--drivers/tty/hvc/hvcs.c30
1 files changed, 12 insertions, 18 deletions
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
index b9040bec36b..d23759183b4 100644
--- a/drivers/tty/hvc/hvcs.c
+++ b/drivers/tty/hvc/hvcs.c
@@ -1090,27 +1090,23 @@ static int hvcs_enable_device(struct hvcs_struct *hvcsd, uint32_t unit_address,
*/
static struct hvcs_struct *hvcs_get_by_index(int index)
{
- struct hvcs_struct *hvcsd = NULL;
+ struct hvcs_struct *hvcsd;
unsigned long flags;
spin_lock(&hvcs_structs_lock);
- /* We can immediately discard OOB requests */
- if (index >= 0 && index < HVCS_MAX_SERVER_ADAPTERS) {
- list_for_each_entry(hvcsd, &hvcs_structs, next) {
- spin_lock_irqsave(&hvcsd->lock, flags);
- if (hvcsd->index == index) {
- kref_get(&hvcsd->kref);
- spin_unlock_irqrestore(&hvcsd->lock, flags);
- spin_unlock(&hvcs_structs_lock);
- return hvcsd;
- }
+ list_for_each_entry(hvcsd, &hvcs_structs, next) {
+ spin_lock_irqsave(&hvcsd->lock, flags);
+ if (hvcsd->index == index) {
+ kref_get(&hvcsd->kref);
spin_unlock_irqrestore(&hvcsd->lock, flags);
+ spin_unlock(&hvcs_structs_lock);
+ return hvcsd;
}
- hvcsd = NULL;
+ spin_unlock_irqrestore(&hvcsd->lock, flags);
}
-
spin_unlock(&hvcs_structs_lock);
- return hvcsd;
+
+ return NULL;
}
/*
@@ -1203,7 +1199,7 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp)
{
struct hvcs_struct *hvcsd;
unsigned long flags;
- int irq = NO_IRQ;
+ int irq;
/*
* Is someone trying to close the file associated with this device after
@@ -1264,7 +1260,7 @@ static void hvcs_hangup(struct tty_struct * tty)
struct hvcs_struct *hvcsd = tty->driver_data;
unsigned long flags;
int temp_open_count;
- int irq = NO_IRQ;
+ int irq;
spin_lock_irqsave(&hvcsd->lock, flags);
/* Preserve this so that we know how many kref refs to put */
@@ -1499,8 +1495,6 @@ static int __devinit hvcs_initialize(void)
goto index_fail;
}
- hvcs_tty_driver->owner = THIS_MODULE;
-
hvcs_tty_driver->driver_name = hvcs_driver_name;
hvcs_tty_driver->name = hvcs_device_node;