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dmaengine: stm32-mdma: Add a check on read_u32_array

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In stm32_mdma_probe, after reading the property "st,ahb-addr-masks", the
second call is not checked for failure. This time of check to time of use
case of "count" error is sent upstream.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Aditya Pakki 2018-12-28 13:26:41 -06:00 committed by Vinod Koul
parent bfeffd1552
commit 906b40b246
1 changed files with 3 additions and 1 deletions
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4
drivers/dma/stm32-mdma.c
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@ -1579,9 +1579,11 @@ static int stm32_mdma_probe(struct platform_device *pdev)
dmadev->nr_channels = nr_channels; dmadev->nr_channels = nr_channels;
dmadev->nr_requests = nr_requests; dmadev->nr_requests = nr_requests;
device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks", ret = device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks",
dmadev->ahb_addr_masks, dmadev->ahb_addr_masks,
count); count);
if (ret)
return ret;
dmadev->nr_ahb_addr_masks = count; dmadev->nr_ahb_addr_masks = count;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);