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authorSascha Hauer <s.hauer@pengutronix.de>2011-08-25 11:03:36 +0200
committerVinod Koul <vinod.koul@intel.com>2011-08-29 20:08:37 +0530
commit36e2f21ab481b3d6bd31b99e1de669fbbac4bd0e (patch)
tree4e6c67bfa2a9dbb81e3a70760898c02f9d6e8cbe /drivers/dma/imx-sdma.c
parent73eab978ad6934499b83ecc920d470fe99c5e54d (diff)
downloadlinux-36e2f21ab481b3d6bd31b99e1de669fbbac4bd0e.tar.bz2
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: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/imx-sdma.c')
-rw-r--r--drivers/dma/imx-sdma.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index f50c87c303dd..8abf8c190aad 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -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;