Messages in this thread | | | Date | Mon, 9 May 2016 18:30:43 +0100 | From | Peter Griffin <> | Subject | Re: [PATCH 03/18] dmaengine: st_fdma: Add STMicroelectronics FDMA engine driver support |
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Hi Vinod,
On Mon, 02 May 2016, Vinod Koul wrote:
> On Wed, Apr 27, 2016 at 01:59:23PM +0100, Peter Griffin wrote: > > > bunch of this seems similar to cyclic case, can you create common setup > > > routine for these, anyway cyclic is a special cases of slave_sg > > > > In v4 I've made a st_fdma_prep_common() which abstracts out all the common > > checks at the beginning of the *_prep*() functions. > > > > In v3 fill_fw_node() is already (from one of your previous reviews) > > abstracting out all the common parts from these loops. So everything > > that is now left is actually differences between the two setups. > > > > Is that Ok? > > Sounds better > > > > and you irq is still enabled and tasklets can be scheduled!! > > > > > Eeek! Very good point. Also looking at some other drivers we > > should be doing a of_dma_controller_free() and > > dma_async_device_unregister(). > > > > So something like this: - > > > > st_fdma_disable(); /*disables irqs*/ > > of_dma_controller_free(pdev->dev.of_node); > > dma_async_device_unregister(&priv->slave); > > st_fdma_clk_disable(fdev); > > you can call devm_free_irq() explictyly, that will syncronize irq and > free it up.
Ok will do/
> Also you should kill the tasklet afterwards. > We aren't using a tasklet in this driver.
Peter.
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