diff options
| author | Jaehoon Chung <jh80.chung@samsung.com> | 2018-01-22 03:28:54 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2018-01-23 15:37:11 +0100 |
| commit | b5d6bc90c9129279d363ccbc02ad11e7b657c0b4 (patch) | |
| tree | 8354e4db4267fc376cff69ee6ff2b42fbbebae59 | |
| parent | PCI: iproc: Fix NULL pointer dereference for BCMA (diff) | |
| download | linux-b5d6bc90c9129279d363ccbc02ad11e7b657c0b4.tar.xz linux-b5d6bc90c9129279d363ccbc02ad11e7b657c0b4.zip | |
PCI: exynos: Fix a potential init_clk_resources NULL pointer dereference
In order to avoid triggering a NULL pointer dereference in
exynos_pcie_probe() a check must be put in place to detect if
the init_clk_resources hook is initialized before calling it.
Add the respective function pointer check in exynos_pcie_probe().
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
[lorenzo.pieralisi@arm.com: rewrote the commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
| -rw-r--r-- | drivers/pci/dwc/pci-exynos.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pci/dwc/pci-exynos.c b/drivers/pci/dwc/pci-exynos.c index 56f32aeebd0a..39f08881f9a4 100644 --- a/drivers/pci/dwc/pci-exynos.c +++ b/drivers/pci/dwc/pci-exynos.c @@ -499,7 +499,8 @@ static int __init exynos_pcie_probe(struct platform_device *pdev) return ret; } - if (ep->ops && ep->ops->get_clk_resources) { + if (ep->ops && ep->ops->get_clk_resources && + ep->ops->init_clk_resources) { ret = ep->ops->get_clk_resources(ep); if (ret) return ret; |