From: Stefan Richter Date: Sun, 14 Dec 2008 18:19:23 +0000 (+0100) Subject: firewire: cdev: fix race of fw_device_op_release with bus reset X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=97811e347310766030a648fdf0e407b2c91a39c1;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git firewire: cdev: fix race of fw_device_op_release with bus reset Unlink the client from the fw_device earlier in order to prevent bus reset events being added to client->event_list during shutdown. Signed-off-by: Stefan Richter --- diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index a320ab48edd6..4dd66c1a36da 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -1009,6 +1009,10 @@ static int fw_device_op_release(struct inode *inode, struct file *file) struct event *e, *next_e; struct client_resource *r, *next_r; + mutex_lock(&client->device->client_list_mutex); + list_del(&client->link); + mutex_unlock(&client->device->client_list_mutex); + if (client->buffer.pages) fw_iso_buffer_destroy(&client->buffer, client->device->card); @@ -1026,10 +1030,6 @@ static int fw_device_op_release(struct inode *inode, struct file *file) list_for_each_entry_safe(e, next_e, &client->event_list, link) kfree(e); - mutex_lock(&client->device->client_list_mutex); - list_del(&client->link); - mutex_unlock(&client->device->client_list_mutex); - fw_device_put(client->device); kfree(client);