Re: [PATCH] DMA:omap-dma: Fix kernel compilation error and checkpatch issues

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On Mon, Dec 11, 2017 at 07:30:33PM +0530, venkat.prashanth2498@xxxxxxxxx wrote:
> From: Venkat Prashanth B U <venkat.prashanth2498@xxxxxxxxx>
> 
> This is the patch to the omap-dma.c file that fixes
> the following issues:

Thanks Venkat for the patch, but unforntunately it has some issues.

First a patch should do only one thing, here it is attempting to do 3
things. I would urge you to read up on Documentation/process/* files. They
should help and feel free to ask.

Also title should document the patch, what it does and not fixes.

> 1.redefinition of 'omap_dma_filter_fn' in the line 1273
> of drivers/dma/omap-dma.c

This one actually sounds okay

> 2.drivers/dma/omap-dma.c:341: ERROR: code indent should
> use tabs where possible reported by ./checkpatch.pl
> 
> 3.drivers/dma/omap-dma.c:749: WARNING: Missing a blank
> line after declarations reported by ./checkpatch.pl

I typically dont take ./checkpatch.pl fixes as this causes many issues like
backporting on stable. So please drop these

> 
> Signed-off-by: Venkat Prashanth B U <venkat.prashanth2498@xxxxxxxxx>
> ---
>  drivers/dma/omap-dma.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
> index 1dfc71c..2a40485 100644
> --- a/drivers/dma/omap-dma.c
> +++ b/drivers/dma/omap-dma.c
> @@ -338,7 +338,7 @@ static void omap_dma_stop(struct omap_chan *c)
>  		if (val & (CCR_RD_ACTIVE | CCR_WR_ACTIVE))
>  			dev_err(c->vc.chan.device->dev,
>  				"DMA drain did not complete on lch %d\n",
> -			        c->dma_ch);
> +				c->dma_ch);
>  
>  		omap_dma_glbl_write(od, OCP_SYSCONFIG, sysconfig);
>  	} else {
> @@ -746,6 +746,7 @@ static void omap_dma_issue_pending(struct dma_chan *chan)
>  		 */
>  		if (!c->cyclic) {
>  			struct omap_dmadev *d = to_omap_dma_dev(chan->device);
> +
>  			spin_lock(&d->lock);
>  			if (list_empty(&c->node))
>  				list_add_tail(&c->node, &d->pending);
> @@ -1269,7 +1270,7 @@ static struct platform_driver omap_dma_driver = {
>  	},
>  };
>  
> -bool omap_dma_filter_fn(struct dma_chan *chan, void *param)
> +bool omap_dma_filter_func(struct dma_chan *chan, void *param)
>  {
>  	if (chan->device->dev->driver == &omap_dma_driver.driver) {
>  		struct omap_dmadev *od = to_omap_dma_dev(chan->device);
> -- 
> 1.9.1
> 

-- 
~Vinod
--
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