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authorLinus Torvalds <torvalds@linux-foundation.org>2014-03-02 04:30:43 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2014-03-02 04:30:43 +0100
commit3750c14022d185f4a583dda243f2f46f51ce1a2c (patch)
tree12ca1c6ebdc31e35bdf9235650b6866de3a78818 /drivers/dma
parentMerge tag 'pm+acpi-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff)
parentdma: sdma: Add imx25 compatible (diff)
downloadlinux-3750c14022d185f4a583dda243f2f46f51ce1a2c.tar.xz
linux-3750c14022d185f4a583dda243f2f46f51ce1a2c.zip
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dma fixes from Vinod Koul: "This request brings you two small fixes. First one for fixing dereference of freed descriptor and second for fixing sdma bindings for it to work for imx25. I was planning to send this about 10days ago but then I had to proceed on my paternity leave and didnt get chance to send this. Now got a bit of time from dady duties :)" * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dma: sdma: Add imx25 compatible dma: ste_dma40: don't dereference free:d descriptor
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/imx-sdma.c1
-rw-r--r--drivers/dma/ste_dma40.c4
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 4e7918339b12..19041cefabb1 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -449,6 +449,7 @@ static const struct of_device_id sdma_dt_ids[] = {
{ .compatible = "fsl,imx51-sdma", .data = &sdma_imx51, },
{ .compatible = "fsl,imx35-sdma", .data = &sdma_imx35, },
{ .compatible = "fsl,imx31-sdma", .data = &sdma_imx31, },
+ { .compatible = "fsl,imx25-sdma", .data = &sdma_imx25, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sdma_dt_ids);
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 00a2de957b23..bf18c786ed40 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -1641,6 +1641,7 @@ static void dma_tasklet(unsigned long data)
struct d40_chan *d40c = (struct d40_chan *) data;
struct d40_desc *d40d;
unsigned long flags;
+ bool callback_active;
dma_async_tx_callback callback;
void *callback_param;
@@ -1668,6 +1669,7 @@ static void dma_tasklet(unsigned long data)
}
/* Callback to client */
+ callback_active = !!(d40d->txd.flags & DMA_PREP_INTERRUPT);
callback = d40d->txd.callback;
callback_param = d40d->txd.callback_param;
@@ -1690,7 +1692,7 @@ static void dma_tasklet(unsigned long data)
spin_unlock_irqrestore(&d40c->lock, flags);
- if (callback && (d40d->txd.flags & DMA_PREP_INTERRUPT))
+ if (callback_active && callback)
callback(callback_param);
return;