Messages in this thread Patch in this message | | | From | Chris Leech <> | Subject | [PATCH 2/9] drivers/dma: handle sysfs errors | Date | Fri, 02 Mar 2007 18:24:19 -0800 |
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From: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Chris Leech <christopher.leech@intel.com> ---
drivers/dma/dmaengine.c | 22 ++++++++++++++++++++-- 1 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 1527804..dc65773 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -312,7 +312,7 @@ void dma_async_client_chan_request(struct dma_client *client, int dma_async_device_register(struct dma_device *device) { static int id; - int chancnt = 0; + int chancnt = 0, rc; struct dma_chan* chan; if (!device) @@ -334,8 +334,15 @@ int dma_async_device_register(struct dma_device *device) snprintf(chan->class_dev.class_id, BUS_ID_SIZE, "dma%dchan%d", device->dev_id, chan->chan_id); + rc = class_device_register(&chan->class_dev); + if (rc) { + chancnt--; + free_percpu(chan->local); + chan->local = NULL; + goto err_out; + } + kref_get(&device->refcount); - class_device_register(&chan->class_dev); } mutex_lock(&dma_list_mutex); @@ -345,6 +352,17 @@ int dma_async_device_register(struct dma_device *device) dma_chans_rebalance(); return 0; + +err_out: + list_for_each_entry(chan, &device->channels, device_node) { + if (chan->local == NULL) + continue; + kref_put(&device->refcount, dma_async_device_cleanup); + class_device_unregister(&chan->class_dev); + chancnt--; + free_percpu(chan->local); + } + return rc; } /** - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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