Commit a72f3a4c authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Greg Kroah-Hartman

Drivers: hv: utils: rename outmsg_lock

As a preparation to reusing outmsg_lock to protect test-and-set openrations
on 'mode' rename it the more general 'lock'.
Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1f75338b
......@@ -27,11 +27,11 @@ static struct list_head hvt_list = LIST_HEAD_INIT(hvt_list);
static void hvt_reset(struct hvutil_transport *hvt)
{
mutex_lock(&hvt->outmsg_lock);
mutex_lock(&hvt->lock);
kfree(hvt->outmsg);
hvt->outmsg = NULL;
hvt->outmsg_len = 0;
mutex_unlock(&hvt->outmsg_lock);
mutex_unlock(&hvt->lock);
if (hvt->on_reset)
hvt->on_reset();
}
......@@ -47,7 +47,7 @@ static ssize_t hvt_op_read(struct file *file, char __user *buf,
if (wait_event_interruptible(hvt->outmsg_q, hvt->outmsg_len > 0))
return -EINTR;
mutex_lock(&hvt->outmsg_lock);
mutex_lock(&hvt->lock);
if (!hvt->outmsg) {
ret = -EAGAIN;
goto out_unlock;
......@@ -68,7 +68,7 @@ static ssize_t hvt_op_read(struct file *file, char __user *buf,
hvt->outmsg_len = 0;
out_unlock:
mutex_unlock(&hvt->outmsg_lock);
mutex_unlock(&hvt->lock);
return ret;
}
......@@ -197,7 +197,7 @@ int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len)
return ret;
}
/* HVUTIL_TRANSPORT_CHARDEV */
mutex_lock(&hvt->outmsg_lock);
mutex_lock(&hvt->lock);
if (hvt->outmsg) {
/* Previous message wasn't received */
ret = -EFAULT;
......@@ -211,7 +211,7 @@ int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len)
} else
ret = -ENOMEM;
out_unlock:
mutex_unlock(&hvt->outmsg_lock);
mutex_unlock(&hvt->lock);
return ret;
}
......@@ -242,7 +242,7 @@ struct hvutil_transport *hvutil_transport_init(const char *name,
hvt->mdev.fops = &hvt->fops;
init_waitqueue_head(&hvt->outmsg_q);
mutex_init(&hvt->outmsg_lock);
mutex_init(&hvt->lock);
spin_lock(&hvt_list_lock);
list_add(&hvt->list, &hvt_list);
......
......@@ -38,7 +38,7 @@ struct hvutil_transport {
u8 *outmsg; /* message to the userspace */
int outmsg_len; /* its length */
wait_queue_head_t outmsg_q; /* poll/read wait queue */
struct mutex outmsg_lock; /* protects outmsg */
struct mutex lock; /* protects struct members */
};
struct hvutil_transport *hvutil_transport_init(const char *name,
......
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