The patch titled
dmatest: properly handle duplicate DMA channels
has been removed from the -mm tree. Its filename was
dmatest-properly-handle-duplicate-dma-channels.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: dmatest: properly handle duplicate DMA channels
From: Timur Tabi <timur@xxxxxxxxxxxxx>
Update the the dmatest driver so that it handles duplicate DMA channels
properly.
When a DMA client is notified of an available DMA channel, it must check
if it has already allocated resources for that channel. If so, it should
return DMA_DUP. This can happen, for example, if a DMA driver calls
dma_async_device_register() more than once.
Signed-off-by: Timur Tabi <timur@xxxxxxxxxxxxx>
Cc: "Williams, Dan J" <dan.j.williams@xxxxxxxxx>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/dma/dmatest.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN drivers/dma/dmatest.c~dmatest-properly-handle-duplicate-dma-channels drivers/dma/dmatest.c
--- a/drivers/dma/dmatest.c~dmatest-properly-handle-duplicate-dma-channels
+++ a/drivers/dma/dmatest.c
@@ -325,6 +325,11 @@ static enum dma_state_client dmatest_add
struct dmatest_thread *thread;
unsigned int i;
+ /* Have we already been told about this channel? */
+ list_for_each_entry(dtc, &dmatest_channels, node)
+ if (dtc->chan == chan)
+ return DMA_DUP;
+
dtc = kmalloc(sizeof(struct dmatest_chan), GFP_ATOMIC);
if (!dtc) {
pr_warning("dmatest: No memory for %s\n", chan->dev.bus_id);
_
Patches currently in -mm which might be from timur@xxxxxxxxxxxxx are
origin.patch
git-powerpc.patch
git-async_tx.patch
git-sound.patch
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