From: Hou Zhiqiang Zhiqiang.Hou@nxp.com
As on some incipient Layerscape platforms (LS1043A series) there isn't separate PF control register block, these registers reside in the LUT register block, so when the driver detected there isn't 'ctrl', it will assign the 'lut' address to the ls_pcie->ctrl.
The current code allocate memory for the struct ls_pcie with random contents, this can result in skipping to assign the ls_pcie->ctrl with the 'lut' address, then further crash with the incorrect address.
Fixes: 118e58e26eba ("pci: layerscape: Split the EP and RC driver") Signed-off-by: Hou Zhiqiang Zhiqiang.Hou@nxp.com --- drivers/pci/pcie_layerscape_ep.c | 2 +- drivers/pci/pcie_layerscape_rc.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/pcie_layerscape_ep.c b/drivers/pci/pcie_layerscape_ep.c index 14983cce4f..c7231635e4 100644 --- a/drivers/pci/pcie_layerscape_ep.c +++ b/drivers/pci/pcie_layerscape_ep.c @@ -244,7 +244,7 @@ static int ls_pcie_ep_probe(struct udevice *dev) int ret; u32 svr;
- pcie = devm_kmalloc(dev, sizeof(*pcie), GFP_KERNEL); + pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); if (!pcie) return -ENOMEM;
diff --git a/drivers/pci/pcie_layerscape_rc.c b/drivers/pci/pcie_layerscape_rc.c index b055ed5165..bd2c19f7f0 100644 --- a/drivers/pci/pcie_layerscape_rc.c +++ b/drivers/pci/pcie_layerscape_rc.c @@ -254,7 +254,7 @@ static int ls_pcie_probe(struct udevice *dev)
pcie_rc->bus = dev;
- pcie = devm_kmalloc(dev, sizeof(*pcie), GFP_KERNEL); + pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); if (!pcie) return -ENOMEM;