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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 <stefanr@s5r6.in-berlin.de>
hifive-unleashed-5.1
Stefan Richter 2009-01-05 20:28:10 +01:00
parent 3ba949868a
commit 36a755cfc3
1 changed files with 3 additions and 3 deletions
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6
drivers/firewire/fw-cdev.c
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@ -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;