diff options
| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2013-01-03 00:06:47 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-01-08 00:16:59 +0400 |
| commit | 6960af6dce1f0b2d9d1b4ddf75952d54e633b923 (patch) | |
| tree | 0ba3d4a06fdd882d1e327ad49c5e1860b601d6de | |
| parent | 40a23296854dded596fda33e0df4a7373229d75e (diff) | |
| download | linux-6960af6dce1f0b2d9d1b4ddf75952d54e633b923.tar.xz | |
p54pci: don't return zero on failure paths in p54p_probe()
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.
Similar issue is if check for returned value of pci_resource_len() fails.
The patch implements proper error code propagation.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/p54/p54pci.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c index 933e5d941937..57e3af8ebb4b 100644 --- a/drivers/net/wireless/p54/p54pci.c +++ b/drivers/net/wireless/p54/p54pci.c @@ -559,6 +559,7 @@ static int p54p_probe(struct pci_dev *pdev, mem_len = pci_resource_len(pdev, 0); if (mem_len < sizeof(struct p54p_csr)) { dev_err(&pdev->dev, "Too short PCI resources\n"); + err = -ENODEV; goto err_disable_dev; } @@ -568,8 +569,10 @@ 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; } |