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    Subject[PATCH 5.10 201/717] dmaengine: mv_xor_v2: Fix error return code in mv_xor_v2_probe()
    Date
    From: Zhihao Cheng <chengzhihao1@huawei.com>

    [ Upstream commit c95e6515a8c065862361f7e0e452978ade7f94ec ]

    Return the corresponding error code when first_msi_entry() returns
    NULL in mv_xor_v2_probe().

    Fixes: 19a340b1a820430 ("dmaengine: mv_xor_v2: new driver")
    Reported-by: Hulk Robot <hulkci@huawei.com>
    Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
    Link: https://lore.kernel.org/r/20201124010813.1939095-1-chengzhihao1@huawei.com
    Signed-off-by: Vinod Koul <vkoul@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/dma/mv_xor_v2.c | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c
    index 2753a6b916f60..9b0d463f89bbd 100644
    --- a/drivers/dma/mv_xor_v2.c
    +++ b/drivers/dma/mv_xor_v2.c
    @@ -771,8 +771,10 @@ static int mv_xor_v2_probe(struct platform_device *pdev)
    goto disable_clk;

    msi_desc = first_msi_entry(&pdev->dev);
    - if (!msi_desc)
    + if (!msi_desc) {
    + ret = -ENODEV;
    goto free_msi_irqs;
    + }
    xor_dev->msi_desc = msi_desc;

    ret = devm_request_irq(&pdev->dev, msi_desc->irq,
    --
    2.27.0


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