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 e3850f04f6763..889a94af4c851 100644 --- a/drivers/dma/mv_xor_v2.c +++ b/drivers/dma/mv_xor_v2.c @@ -766,8 +766,10 @@ 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,