From: Stefan Richter Date: Mon, 5 Jan 2009 19:28:10 +0000 (+0100) Subject: firewire: cdev: shut down iso context before freeing the buffer X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=36a755cfc398fc50abc74055d4478c1b067dac55;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git firewire: cdev: shut down iso context before freeing the buffer DMA must be halted before we DMA-unmap and free the DMA buffer. Since we cannot rely on the client to stop the context before it closes the fd, we have to reorder fw_iso_buffer_destroy vs. fw_iso_context_destroy. Signed-off-by: Stefan Richter --- diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index 3d816a6395cd..b93ad9c0a0d0 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -1386,12 +1386,12 @@ static int fw_device_op_release(struct inode *inode, struct file *file) list_del(&client->link); mutex_unlock(&client->device->client_list_mutex); - if (client->buffer.pages) - fw_iso_buffer_destroy(&client->buffer, client->device->card); - if (client->iso_context) fw_iso_context_destroy(client->iso_context); + if (client->buffer.pages) + fw_iso_buffer_destroy(&client->buffer, client->device->card); + /* Freeze client->resource_idr and client->event_list */ spin_lock_irq(&client->lock); client->in_shutdown = true;