[PATCH] dmaengine: pl330: Typecast with enum to fix the coverity warning

[PATCH] dmaengine: pl330: Typecast with enum to fix the coverity warning

[Harini Katakam]

From: Shravya Kumbham <shravya.kumbham@xilinx.com>

Typecast the flags and flg variables with (enum dma_ctrl_flags) in
pl330_prep_dma_cyclic, pl330_prep_dma_memcpy and pl330_prep_slave_sg
functions to fix the coverity warning.

Addresses-Coverity: Event mixed_enum_type.
Signed-off-by: Shravya Kumbham <shravya.kumbham@xilinx.com>
Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
---
 drivers/dma/pl330.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 110de8a60058..35afbad2e1a7 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2752,7 +2752,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
 		return NULL;
 
 	pch->cyclic = true;
-	desc->txd.flags = flags;
+	desc->txd.flags = (enum dma_ctrl_flags)flags;
 
 	return &desc->txd;
 }
@@ -2804,7 +2804,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
 
 	desc->bytes_requested = len;
 
-	desc->txd.flags = flags;
+	desc->txd.flags = (enum dma_ctrl_flags)flags;
 
 	return &desc->txd;
 }
@@ -2889,7 +2889,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 	}
 
 	/* Return the last desc in the chain */
-	desc->txd.flags = flg;
+	desc->txd.flags = (enum dma_ctrl_flags)flg;
 	return &desc->txd;
 }
 
-- 
2.17.1

Re: [PATCH] dmaengine: pl330: Typecast with enum to fix the coverity warning

[Vinod Koul]

On 29-06-21, 16:07, Harini Katakam wrote:
> From: Shravya Kumbham <shravya.kumbham@xilinx.com>
> 
> Typecast the flags and flg variables with (enum dma_ctrl_flags) in
> pl330_prep_dma_cyclic, pl330_prep_dma_memcpy and pl330_prep_slave_sg
> functions to fix the coverity warning.
> 
> Addresses-Coverity: Event mixed_enum_type.
> Signed-off-by: Shravya Kumbham <shravya.kumbham@xilinx.com>
> Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
> Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
> ---
>  drivers/dma/pl330.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> index 110de8a60058..35afbad2e1a7 100644
> --- a/drivers/dma/pl330.c
> +++ b/drivers/dma/pl330.c
> @@ -2752,7 +2752,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
>  		return NULL;
>  
>  	pch->cyclic = true;
> -	desc->txd.flags = flags;
> +	desc->txd.flags = (enum dma_ctrl_flags)flags;

Does this driver use the txd.flags?

>  
>  	return &desc->txd;
>  }
> @@ -2804,7 +2804,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
>  
>  	desc->bytes_requested = len;
>  
> -	desc->txd.flags = flags;
> +	desc->txd.flags = (enum dma_ctrl_flags)flags;
>  
>  	return &desc->txd;
>  }
> @@ -2889,7 +2889,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
>  	}
>  
>  	/* Return the last desc in the chain */
> -	desc->txd.flags = flg;
> +	desc->txd.flags = (enum dma_ctrl_flags)flg;
>  	return &desc->txd;
>  }
>  
> -- 
> 2.17.1

-- 
~Vinod

Re: [PATCH] dmaengine: pl330: Typecast with enum to fix the coverity warning

[Harini Katakam]

Hi Vinod,

<snip>
> >       pch->cyclic = true;
> > -     desc->txd.flags = flags;
> > +     desc->txd.flags = (enum dma_ctrl_flags)flags;
>
> Does this driver use the txd.flags?

Sorry for the delayed response. This flag is not used and I'm working
on another patch to remove it.

Regards,
Harini