[PATCH] dmaengine: imx-sdma: initialize all script addresses

[PATCH] dmaengine: imx-sdma: initialize all script addresses

[Sascha Hauer]

The script addresses array increases with each new version. The driver
initializes the array to -EINVAL initially, but only up to the size
of the v1 array. Initialize the additional addresses for the newer
versions as well. Without this unitialized values of the newer arrays
are treated as valid.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/dma/imx-sdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 01422e721b26e..2ca79357f57dc 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -2080,7 +2080,7 @@ static int sdma_probe(struct platform_device *pdev)
 
 	/* initially no scripts available */
 	saddr_arr = (s32 *)sdma->script_addrs;
-	for (i = 0; i < SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; i++)
+	for (i = 0; i < sizeof(*sdma->script_addrs) / sizeof(s32); i++)
 		saddr_arr[i] = -EINVAL;
 
 	dma_cap_set(DMA_SLAVE, sdma->dma_device.cap_mask);
-- 
2.26.2


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RE: [PATCH] dmaengine: imx-sdma: initialize all script addresses

[Robin Gong]

On 2020/05/13 14:04 Sascha Hauer <s.hauer@pengutronix.de> wrote:
> The script addresses array increases with each new version. The driver
> initializes the array to -EINVAL initially, but only up to the size of the v1 array.
> Initialize the additional addresses for the newer versions as well. Without this
> unitialized values of the newer arrays are treated as valid.
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>  drivers/dma/imx-sdma.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index
> 01422e721b26e..2ca79357f57dc 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -2080,7 +2080,7 @@ static int sdma_probe(struct platform_device *pdev)
> 
>  	/* initially no scripts available */
>  	saddr_arr = (s32 *)sdma->script_addrs;
> -	for (i = 0; i < SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; i++)
> +	for (i = 0; i < sizeof(*sdma->script_addrs) / sizeof(s32); i++)
>  		saddr_arr[i] = -EINVAL;
Reviewed-by : Robin Gong <yibin.gong@nxp.com>
> 
>  	dma_cap_set(DMA_SLAVE, sdma->dma_device.cap_mask);
> --
> 2.26.2


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Re: [PATCH] dmaengine: imx-sdma: initialize all script addresses

[Vinod Koul]

On 13-05-20, 08:04, Sascha Hauer wrote:
> The script addresses array increases with each new version. The driver
> initializes the array to -EINVAL initially, but only up to the size
> of the v1 array. Initialize the additional addresses for the newer
> versions as well. Without this unitialized values of the newer arrays
> are treated as valid.

Applied, thanks

-- 
~Vinod

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