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Subject[PATCH] p54pci: don't return zero on failure path in p54p_probe()
Date
If pci_set_dma_mask() or pci_set_consistent_dma_mask() fails in p54p_probe(),
it breaks off initialization, deallocates all resources, but returns zero.

The patch implements proper error code propagation.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
---
drivers/net/wireless/p54/p54pci.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
index 933e5d9..fef69ea 100644
--- a/drivers/net/wireless/p54/p54pci.c
+++ b/drivers/net/wireless/p54/p54pci.c
@@ -568,8 +568,10 @@ static int p54p_probe(struct pci_dev *pdev,
goto err_disable_dev;
}

- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
- pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (!err)
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err) {
dev_err(&pdev->dev, "No suitable DMA available\n");
goto err_free_reg;
}
--
1.7.9.5


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