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authorLinus Torvalds <torvalds@linux-foundation.org>2011-08-01 13:46:37 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-01 13:46:37 -1000
commit12ff47e7f5fb64c566f62e6cf6a3b291c51bd337 (patch)
treed9fba3780142af380ccfaf90d8b13363e3475bd7 /drivers/dma/mxs-dma.c
parentMerge branch 'gpiolib' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 (diff)
parentMerge branch 'next' into for-linus-3.0 (diff)
downloadlinux-dev-12ff47e7f5fb64c566f62e6cf6a3b291c51bd337.tar.xz
linux-dev-12ff47e7f5fb64c566f62e6cf6a3b291c51bd337.zip
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (37 commits) Improve slave/cyclic DMA engine documentation dmaengine: pl08x: handle the rest of enums in pl08x_width DMA: PL08x: cleanup selection of burst size DMA: PL08x: avoid recalculating cctl at each prepare DMA: PL08x: cleanup selection of buswidth DMA: PL08x: constify plchan->cd and plat->slave_channels DMA: PL08x: separately store source/destination cctl DMA: PL08x: separately store source/destination slave address DMA: PL08x: clean up LLI debugging DMA: PL08x: select LLI bus only once per LLI setup DMA: PL08x: remove unused constants ARM: mxs-dma: reset after disable channel dma: intel_mid_dma: remove redundant pci_set_drvdata calls dma: mxs-dma: fix unterminated platform_device_id table dmaengine: pl330: make platform data optional dmaengine: imx-sdma: return proper error if kzalloc fails pch_dma: Fix CTL register access issue dmaengine: mxs-dma: skip request_irq for NO_IRQ dmaengine/coh901318: fix slave submission semantics dmaengine/ste_dma40: allow memory buswidth/burst to be configured ... Fix trivial whitespace conflict in drivers/dma/mv_xor.c
Diffstat (limited to 'drivers/dma/mxs-dma.c')
-rw-r--r--drivers/dma/mxs-dma.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 88aad4f54002..be641cbd36fc 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -327,10 +327,12 @@ static int mxs_dma_alloc_chan_resources(struct dma_chan *chan)
memset(mxs_chan->ccw, 0, PAGE_SIZE);
- ret = request_irq(mxs_chan->chan_irq, mxs_dma_int_handler,
- 0, "mxs-dma", mxs_dma);
- if (ret)
- goto err_irq;
+ if (mxs_chan->chan_irq != NO_IRQ) {
+ ret = request_irq(mxs_chan->chan_irq, mxs_dma_int_handler,
+ 0, "mxs-dma", mxs_dma);
+ if (ret)
+ goto err_irq;
+ }
ret = clk_enable(mxs_dma->clk);
if (ret)
@@ -535,6 +537,7 @@ static int mxs_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
switch (cmd) {
case DMA_TERMINATE_ALL:
mxs_dma_disable_chan(mxs_chan);
+ mxs_dma_reset_chan(mxs_chan);
break;
case DMA_PAUSE:
mxs_dma_pause_chan(mxs_chan);
@@ -707,6 +710,8 @@ static struct platform_device_id mxs_dma_type[] = {
}, {
.name = "mxs-dma-apbx",
.driver_data = MXS_DMA_APBX,
+ }, {
+ /* end of list */
}
};