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SubjectRe: [PATCH 3/4] media: pxa_camera: trivial move of dma irq functions
On Sun, 22 Mar 2015, Robert Jarzmik wrote:

> From: Robert Jarzmik <robert.jarzmik@intel.com>
>
> This moves the dma irq handling functions up in the source file, so that
> they are available before DMA preparation functions. It prepares the
> conversion to DMA engine, where the descriptors are populated with these
> functions as callbacks.
>
> Signed-off-by: Robert Jarzmik <robert.jarzmik@intel.com>
> ---
> drivers/media/platform/soc_camera/pxa_camera.c | 40 ++++++++++++++------------
> 1 file changed, 22 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
> index c0c0f0f..8b39f44 100644
> --- a/drivers/media/platform/soc_camera/pxa_camera.c
> +++ b/drivers/media/platform/soc_camera/pxa_camera.c
> @@ -311,6 +311,28 @@ static int calculate_dma_sglen(struct scatterlist *sglist, int sglen,
>
> BUG_ON(size != 0);
> return i + 1;
> +static void pxa_camera_dma_irq(struct pxa_camera_dev *pcdev,
> + enum pxa_camera_active_dma act_dma);
> +
> +static void pxa_camera_dma_irq_y(void *data)

Wait, how is this patch trivial? You change pxa_camera_dma_irq_?()
prototypes, which are used as PXA DMA callbacks. Does this mean, that
either before or after this patch compilation is broken?

Thanks
Guennadi

> +{
> + struct pxa_camera_dev *pcdev = data;
> +
> + pxa_camera_dma_irq(pcdev, DMA_Y);
> +}
> +
> +static void pxa_camera_dma_irq_u(void *data)
> +{
> + struct pxa_camera_dev *pcdev = data;
> +
> + pxa_camera_dma_irq(pcdev, DMA_U);
> +}
> +
> +static void pxa_camera_dma_irq_v(void *data)
> +{
> + struct pxa_camera_dev *pcdev = data;
> +
> + pxa_camera_dma_irq(pcdev, DMA_V);
> }
>
> /**
> @@ -810,24 +832,6 @@ out:
> spin_unlock_irqrestore(&pcdev->lock, flags);
> }
>
> -static void pxa_camera_dma_irq_y(int channel, void *data)
> -{
> - struct pxa_camera_dev *pcdev = data;
> - pxa_camera_dma_irq(channel, pcdev, DMA_Y);
> -}
> -
> -static void pxa_camera_dma_irq_u(int channel, void *data)
> -{
> - struct pxa_camera_dev *pcdev = data;
> - pxa_camera_dma_irq(channel, pcdev, DMA_U);
> -}
> -
> -static void pxa_camera_dma_irq_v(int channel, void *data)
> -{
> - struct pxa_camera_dev *pcdev = data;
> - pxa_camera_dma_irq(channel, pcdev, DMA_V);
> -}
> -
> static struct videobuf_queue_ops pxa_videobuf_ops = {
> .buf_setup = pxa_videobuf_setup,
> .buf_prepare = pxa_videobuf_prepare,
> --
> 2.1.4
>
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