diff options
Diffstat (limited to 'drivers/staging/batman-adv/device.c')
-rw-r--r-- | drivers/staging/batman-adv/device.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/staging/batman-adv/device.c b/drivers/staging/batman-adv/device.c index 92cf8d5..ab2b0b1 100644 --- a/drivers/staging/batman-adv/device.c +++ b/drivers/staging/batman-adv/device.c @@ -133,8 +133,9 @@ int bat_device_release(struct inode *inode, struct file *file) (struct device_client *)file->private_data; struct device_packet *device_packet; struct list_head *list_pos, *list_pos_tmp; + unsigned long flags; - spin_lock(&device_client->lock); + spin_lock_irqsave(&device_client->lock, flags); /* for all packets in the queue ... */ list_for_each_safe(list_pos, list_pos_tmp, &device_client->queue_list) { @@ -146,7 +147,7 @@ int bat_device_release(struct inode *inode, struct file *file) } device_client_hash[device_client->index] = NULL; - spin_unlock(&device_client->lock); + spin_unlock_irqrestore(&device_client->lock, flags); kfree(device_client); dec_module_count(); @@ -161,6 +162,7 @@ ssize_t bat_device_read(struct file *file, char __user *buf, size_t count, (struct device_client *)file->private_data; struct device_packet *device_packet; int error; + unsigned long flags; if ((file->f_flags & O_NONBLOCK) && (device_client->queue_len == 0)) return -EAGAIN; @@ -177,14 +179,14 @@ ssize_t bat_device_read(struct file *file, char __user *buf, size_t count, if (error) return error; - spin_lock(&device_client->lock); + spin_lock_irqsave(&device_client->lock, flags); device_packet = list_first_entry(&device_client->queue_list, struct device_packet, list); list_del(&device_packet->list); device_client->queue_len--; - spin_unlock(&device_client->lock); + spin_unlock_irqrestore(&device_client->lock, flags); error = __copy_to_user(buf, &device_packet->icmp_packet, sizeof(struct icmp_packet)); @@ -205,6 +207,7 @@ ssize_t bat_device_write(struct file *file, const char __user *buff, struct icmp_packet icmp_packet; struct orig_node *orig_node; struct batman_if *batman_if; + unsigned long flags; if (len < sizeof(struct icmp_packet)) { bat_dbg(DBG_BATMAN, "batman-adv:Error - can't send packet from char device: invalid packet size\n"); @@ -239,7 +242,7 @@ ssize_t bat_device_write(struct file *file, const char __user *buff, if (atomic_read(&module_state) != MODULE_ACTIVE) goto dst_unreach; - spin_lock(&orig_hash_lock); + spin_lock_irqsave(&orig_hash_lock, flags); orig_node = ((struct orig_node *)hash_find(orig_hash, icmp_packet.dst)); if (!orig_node) @@ -261,11 +264,11 @@ ssize_t bat_device_write(struct file *file, const char __user *buff, sizeof(struct icmp_packet), batman_if, orig_node->router->addr); - spin_unlock(&orig_hash_lock); + spin_unlock_irqrestore(&orig_hash_lock, flags); goto out; unlock: - spin_unlock(&orig_hash_lock); + spin_unlock_irqrestore(&orig_hash_lock, flags); dst_unreach: icmp_packet.msg_type = DESTINATION_UNREACHABLE; bat_device_add_packet(device_client, &icmp_packet); @@ -290,6 +293,7 @@ void bat_device_add_packet(struct device_client *device_client, struct icmp_packet *icmp_packet) { struct device_packet *device_packet; + unsigned long flags; device_packet = kmalloc(sizeof(struct device_packet), GFP_KERNEL); @@ -300,12 +304,12 @@ void bat_device_add_packet(struct device_client *device_client, memcpy(&device_packet->icmp_packet, icmp_packet, sizeof(struct icmp_packet)); - spin_lock(&device_client->lock); + spin_lock_irqsave(&device_client->lock, flags); /* while waiting for the lock the device_client could have been * deleted */ if (!device_client_hash[icmp_packet->uid]) { - spin_unlock(&device_client->lock); + spin_unlock_irqrestore(&device_client->lock, flags); kfree(device_packet); return; } @@ -322,7 +326,7 @@ void bat_device_add_packet(struct device_client *device_client, device_client->queue_len--; } - spin_unlock(&device_client->lock); + spin_unlock_irqrestore(&device_client->lock, flags); wake_up(&device_client->queue_wait); } |