Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ff487fb773749124550a5ad2b7fbfe0376af6f0d
Commit: ff487fb773749124550a5ad2b7fbfe0376af6f0d
Parent: 000725d56a196e72dc22328324c5ec5506265736
Author: Jeff Garzik <[EMAIL PROTECTED]>
AuthorDate: Thu Mar 8 09:57:34 2007 -0800
Committer: Dan Williams <[EMAIL PROTECTED]>
CommitDate: Wed Jul 11 15:39:03 2007 -0700
drivers/dma: handle sysfs errors
From: Jeff Garzik <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
Signed-off-by: Chris Leech <[EMAIL PROTECTED]>
---
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 322ee29..828310d 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -316,7 +316,7 @@ EXPORT_SYMBOL(dma_async_client_chan_request);
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)
@@ -338,8 +338,15 @@ 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);
@@ -349,6 +356,17 @@ 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;
}
EXPORT_SYMBOL(dma_async_device_register);
-
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