[PATCH] dmaengine: plx_dma: add a missing put_device() on error path
From: Dan Carpenter <hidden>
Date: 2021-03-23 13:20:59
Also in:
kernel-janitors, lkml
Subsystem:
dma generic offload engine subsystem, plx dma driver, the rest · Maintainers:
Vinod Koul, Logan Gunthorpe, Linus Torvalds
Add a missing put_device(&pdev->dev) if the call to
dma_async_device_register(dma); fails.
Fixes: 905ca51e63be ("dmaengine: plx-dma: Introduce PLX DMA engine PCI driver skeleton")
Signed-off-by: Dan Carpenter <redacted>
---
drivers/dma/plx_dma.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/dma/plx_dma.c b/drivers/dma/plx_dma.c
index f387c5bbc170..166934544161 100644
--- a/drivers/dma/plx_dma.c
+++ b/drivers/dma/plx_dma.c@@ -507,10 +507,8 @@ static int plx_dma_create(struct pci_dev *pdev) rc = request_irq(pci_irq_vector(pdev, 0), plx_dma_isr, 0, KBUILD_MODNAME, plxdev); - if (rc) { - kfree(plxdev); - return rc; - } + if (rc) + goto free_plx; spin_lock_init(&plxdev->ring_lock); tasklet_setup(&plxdev->desc_task, plx_dma_desc_task);
@@ -540,14 +538,20 @@ static int plx_dma_create(struct pci_dev *pdev) rc = dma_async_device_register(dma); if (rc) { pci_err(pdev, "Failed to register dma device: %d\n", rc); - free_irq(pci_irq_vector(pdev, 0), plxdev); - kfree(plxdev); - return rc; + goto put_device; } pci_set_drvdata(pdev, plxdev); return 0; + +put_device: + put_device(&pdev->dev); + free_irq(pci_irq_vector(pdev, 0), plxdev); +free_plx: + kfree(plxdev); + + return rc; } static int plx_dma_probe(struct pci_dev *pdev,
--
2.30.2