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| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2013-01-06 11:10:43 +0100 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2013-01-06 17:53:25 +0000 |
| commit | ab6e439fd07aba7cadcadb3fb5e11d3758e19679 (patch) | |
| tree | f123a743e71256d792a28a56e7cc3b8ee63b11d7 | |
| parent | 41be8dc1a44ee2a0a52bdf2b77273624c40782b6 (diff) | |
| download | linux-ab6e439fd07aba7cadcadb3fb5e11d3758e19679.tar.gz linux-ab6e439fd07aba7cadcadb3fb5e11d3758e19679.tar.bz2 linux-ab6e439fd07aba7cadcadb3fb5e11d3758e19679.zip | |
dma: mv_xor: fix error handling of mv_xor_channel_add()
When mv_xor_channel_add() fails for one XOR channel, we jump to the
err_channel_add label to clean up all previous channels that had been
initialized correctly. Unfortunately, while handling this error
condition, we were disposing the IRQ mapping before calling
mv_xor_channel_remove() (which does the free_irq()), which is
incorrect.
Instead, do things properly in the reverse order of the
initialization: first remove the XOR channel (so that free_irq() is
done), and then dispose the IRQ mapping.
This avoids ugly warnings when for some reason one of the XOR channel
fails to initialize.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| -rw-r--r-- | drivers/dma/mv_xor.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index ac71f555dd72..cc5d23d3addd 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -1361,9 +1361,9 @@ static int mv_xor_probe(struct platform_device *pdev) err_channel_add: for (i = 0; i < MV_XOR_MAX_CHANNELS; i++) if (xordev->channels[i]) { + mv_xor_channel_remove(xordev->channels[i]); if (pdev->dev.of_node) irq_dispose_mapping(xordev->channels[i]->irq); - mv_xor_channel_remove(xordev->channels[i]); } clk_disable_unprepare(xordev->clk); |