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Subject[PATCH v4 31/32] tty: Fix tty_ldisc_lock name collision
Date

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/tty_ldisc.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 9725c94..ba49c0e 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -44,7 +44,7 @@ enum {
* callers who will do ldisc lookups and cannot sleep.
*/

-static DEFINE_RAW_SPINLOCK(tty_ldisc_lock);
+static DEFINE_RAW_SPINLOCK(tty_ldiscs_lock);
/* Line disc dispatch table */
static struct tty_ldisc_ops *tty_ldiscs[NR_LDISCS];

@@ -58,7 +58,7 @@ static struct tty_ldisc_ops *tty_ldiscs[NR_LDISCS];
* from this point onwards.
*
* Locking:
- * takes tty_ldisc_lock to guard against ldisc races
+ * takes tty_ldiscs_lock to guard against ldisc races
*/

int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc)
@@ -69,11 +69,11 @@ int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc)
if (disc < N_TTY || disc >= NR_LDISCS)
return -EINVAL;

- raw_spin_lock_irqsave(&tty_ldisc_lock, flags);
+ raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
tty_ldiscs[disc] = new_ldisc;
new_ldisc->num = disc;
new_ldisc->refcount = 0;
- raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags);
+ raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);

return ret;
}
@@ -88,7 +88,7 @@ EXPORT_SYMBOL(tty_register_ldisc);
* currently in use.
*
* Locking:
- * takes tty_ldisc_lock to guard against ldisc races
+ * takes tty_ldiscs_lock to guard against ldisc races
*/

int tty_unregister_ldisc(int disc)
@@ -99,12 +99,12 @@ int tty_unregister_ldisc(int disc)
if (disc < N_TTY || disc >= NR_LDISCS)
return -EINVAL;

- raw_spin_lock_irqsave(&tty_ldisc_lock, flags);
+ raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
if (tty_ldiscs[disc]->refcount)
ret = -EBUSY;
else
tty_ldiscs[disc] = NULL;
- raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags);
+ raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);

return ret;
}
@@ -115,7 +115,7 @@ static struct tty_ldisc_ops *get_ldops(int disc)
unsigned long flags;
struct tty_ldisc_ops *ldops, *ret;

- raw_spin_lock_irqsave(&tty_ldisc_lock, flags);
+ raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
ret = ERR_PTR(-EINVAL);
ldops = tty_ldiscs[disc];
if (ldops) {
@@ -125,7 +125,7 @@ static struct tty_ldisc_ops *get_ldops(int disc)
ret = ldops;
}
}
- raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags);
+ raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);
return ret;
}

@@ -133,10 +133,10 @@ static void put_ldops(struct tty_ldisc_ops *ldops)
{
unsigned long flags;

- raw_spin_lock_irqsave(&tty_ldisc_lock, flags);
+ raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
ldops->refcount--;
module_put(ldops->owner);
- raw_spin_unlock_irqrestore(&tty_ldisc_lock, flags);
+ raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);
}

/**
@@ -149,7 +149,7 @@ static void put_ldops(struct tty_ldisc_ops *ldops)
* available
*
* Locking:
- * takes tty_ldisc_lock to guard against ldisc races
+ * takes tty_ldiscs_lock to guard against ldisc races
*/

static struct tty_ldisc *tty_ldisc_get(struct tty_struct *tty, int disc)
--
1.8.1.2


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