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Commit 36e2f21a authored by Sascha Hauer's avatar Sascha Hauer Committed by Vinod Koul
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dmaengine i.MX SDMA: set firmware scripts addresses to negative value initially 



If we do not have a firmare script for a given transfer,
the setup of this channel must fail. For this the script
addresses have to be < 0 initially, not 0.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 73eab978

drivers/dma/imx-sdma.c

+6 −0
Original line number Diff line number Diff line
@@ -1281,6 +1281,7 @@ static int __init sdma_probe(struct platform_device *pdev) 
	struct sdma_platform_data *pdata = pdev->dev.platform_data;

	int i;

	struct sdma_engine *sdma;

	s32 *saddr_arr;



	sdma = kzalloc(sizeof(*sdma), GFP_KERNEL);

	if (!sdma)
@@ -1324,6 +1325,11 @@ static int __init sdma_probe(struct platform_device *pdev) 
		goto err_alloc;

	}



	/* initially no scripts available */

	saddr_arr = (s32 *)sdma->script_addrs;

	for (i = 0; i < SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; i++)

		saddr_arr[i] = -EINVAL;



	if (of_id)

		pdev->id_entry = of_id->data;

	sdma->devtype = pdev->id_entry->driver_data;