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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-06 08:37:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-06 08:37:39 -0700
commitbbfdbe9dc00dc3fd6cba9b0f96adc46d025c9079 (patch)
tree578a2c07181a1832eea2dd4195b6ff2fcebf4c83 /drivers/dma
parent722154e4cacf015161efe60009ae9be23d492296 (diff)
parent8bed90557d2600d25e58de30df48b244980164ec (diff)
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Merge branch 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: fix a number of Oopses and leaks in SH framebuffer driver SH: fix error paths in DMA driver sh: sh7751 pci controller io port fix sh: Fix maximum number of SCIF ports in R2D defconfigs SH: fix TS field shift calculation for DMA drivers
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/shdma.c27
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 7cc31b3f40d8..6f25a20de99f 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -290,6 +290,7 @@ static int sh_dmae_alloc_chan_resources(struct dma_chan *chan)
struct sh_dmae_chan *sh_chan = to_sh_chan(chan);
struct sh_desc *desc;
struct sh_dmae_slave *param = chan->private;
+ int ret;
pm_runtime_get_sync(sh_chan->dev);
@@ -301,11 +302,15 @@ static int sh_dmae_alloc_chan_resources(struct dma_chan *chan)
struct sh_dmae_slave_config *cfg;
cfg = sh_dmae_find_slave(sh_chan, param->slave_id);
- if (!cfg)
- return -EINVAL;
+ if (!cfg) {
+ ret = -EINVAL;
+ goto efindslave;
+ }
- if (test_and_set_bit(param->slave_id, sh_dmae_slave_used))
- return -EBUSY;
+ if (test_and_set_bit(param->slave_id, sh_dmae_slave_used)) {
+ ret = -EBUSY;
+ goto etestused;
+ }
param->config = cfg;
@@ -334,10 +339,20 @@ static int sh_dmae_alloc_chan_resources(struct dma_chan *chan)
}
spin_unlock_bh(&sh_chan->desc_lock);
- if (!sh_chan->descs_allocated)
- pm_runtime_put(sh_chan->dev);
+ if (!sh_chan->descs_allocated) {
+ ret = -ENOMEM;
+ goto edescalloc;
+ }
return sh_chan->descs_allocated;
+
+edescalloc:
+ if (param)
+ clear_bit(param->slave_id, sh_dmae_slave_used);
+etestused:
+efindslave:
+ pm_runtime_put(sh_chan->dev);
+ return ret;
}
/*