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>

diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 390e4cae0e1a5519a12fb4ba47401633a5c42b3a..485dea177704f72a95702282b5b3ba14c26d8b9a 100644 (file)
--- 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);