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authorAditya Pakki <pakki001@umn.edu>2018-12-28 13:26:41 -0600
committerVinod Koul <vkoul@kernel.org>2019-01-07 09:52:24 +0530
commit906b40b246b0acb54c4dc97e815cf734761c9820 (patch)
tree32eab12466d21fff799abded3678bcb8a1ba7e7d /drivers/dma/stm32-mdma.c
parentbfeffd155283772bbe78c6a05dec7c0128ee500c (diff)
downloadlinux-906b40b246b0acb54c4dc97e815cf734761c9820.tar.bz2
dmaengine: stm32-mdma: Add a check on read_u32_array
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>
Diffstat (limited to 'drivers/dma/stm32-mdma.c')
-rw-r--r--drivers/dma/stm32-mdma.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 390e4cae0e1a..485dea177704 100644
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -1579,9 +1579,11 @@ static int stm32_mdma_probe(struct platform_device *pdev)
dmadev->nr_channels = nr_channels;
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,
count);
+ if (ret)
+ return ret;
dmadev->nr_ahb_addr_masks = count;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);