diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2022-02-02 09:52:41 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2022-02-04 15:14:26 -0600 |
| commit | 7dd3876205df92e07d824fe2264b38e0b8a9eec1 (patch) | |
| tree | 7e0ba019123eff817fd5ade7fe67a07cb780e3aa /drivers | |
| parent | 053ca37c87af65f41f5842070c68aa53c3d035f5 (diff) | |
| download | linux-7dd3876205df92e07d824fe2264b38e0b8a9eec1.tar.bz2 | |
PCI: kirin: Add dev struct for of_device_get_match_data()
Bean reported that a622435fbe1a ("PCI: kirin: Prefer
of_device_get_match_data()") broke kirin_pcie_probe() because it assumed
match data of 0 was a failure when in fact, it meant the match data was
"(void *)PCIE_KIRIN_INTERNAL_PHY".
Therefore, probing of "hisilicon,kirin960-pcie" devices failed with -EINVAL
and an "OF data missing" message.
Add a struct kirin_pcie_data to encode the PHY type. Then the result of
of_device_get_match_data() should always be a non-NULL pointer to a struct
kirin_pcie_data that contains the PHY type.
Fixes: a622435fbe1a ("PCI: kirin: Prefer of_device_get_match_data()")
Link: https://lore.kernel.org/r/20220202162659.GA12603@bhelgaas
Link: https://lore.kernel.org/r/20220201215941.1203155-1-huobean@gmail.com
Reported-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-kirin.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c index fa6886d66488..c625fc6bb287 100644 --- a/drivers/pci/controller/dwc/pcie-kirin.c +++ b/drivers/pci/controller/dwc/pcie-kirin.c @@ -756,22 +756,28 @@ static int __exit kirin_pcie_remove(struct platform_device *pdev) return 0; } +struct kirin_pcie_data { + enum pcie_kirin_phy_type phy_type; +}; + +static const struct kirin_pcie_data kirin_960_data = { + .phy_type = PCIE_KIRIN_INTERNAL_PHY, +}; + +static const struct kirin_pcie_data kirin_970_data = { + .phy_type = PCIE_KIRIN_EXTERNAL_PHY, +}; + static const struct of_device_id kirin_pcie_match[] = { - { - .compatible = "hisilicon,kirin960-pcie", - .data = (void *)PCIE_KIRIN_INTERNAL_PHY - }, - { - .compatible = "hisilicon,kirin970-pcie", - .data = (void *)PCIE_KIRIN_EXTERNAL_PHY - }, + { .compatible = "hisilicon,kirin960-pcie", .data = &kirin_960_data }, + { .compatible = "hisilicon,kirin970-pcie", .data = &kirin_970_data }, {}, }; static int kirin_pcie_probe(struct platform_device *pdev) { - enum pcie_kirin_phy_type phy_type; struct device *dev = &pdev->dev; + const struct kirin_pcie_data *data; struct kirin_pcie *kirin_pcie; struct dw_pcie *pci; int ret; @@ -781,13 +787,12 @@ static int kirin_pcie_probe(struct platform_device *pdev) return -EINVAL; } - phy_type = (long)of_device_get_match_data(dev); - if (!phy_type) { + data = of_device_get_match_data(dev); + if (!data) { dev_err(dev, "OF data missing\n"); return -EINVAL; } - kirin_pcie = devm_kzalloc(dev, sizeof(struct kirin_pcie), GFP_KERNEL); if (!kirin_pcie) return -ENOMEM; @@ -800,7 +805,7 @@ static int kirin_pcie_probe(struct platform_device *pdev) pci->ops = &kirin_dw_pcie_ops; pci->pp.ops = &kirin_pcie_host_ops; kirin_pcie->pci = pci; - kirin_pcie->type = phy_type; + kirin_pcie->type = data->phy_type; ret = kirin_pcie_get_resource(kirin_pcie, pdev); if (ret) |