| Message ID | 1536164408-10959-1-git-send-email-adouglas@cadence.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
| Series | pci: cadence: Correct probe behaviour when failing to get PHY | expand |
On Wed, Sep 05, 2018 at 05:20:08PM +0100, Alan Douglas wrote: > Test the correct value to see whether the PHY get failed. If you intended a new paragraph here, please insert a blank line. > Use devm_phy_get() instead of devm_phy_optional_get(), since it is > only called if phy name is given in devicetree and so should exist. > If failure when getting or linking PHY, put any PHYs which were > already got and unlink them. > > Fixes: dfb80534692ddc5b ("PCI: cadence: Add generic PHY support to host and EP drivers") > Signed-off-by: Alan Douglas <adouglas@cadence.com> Lorenzo will probably take care of this for you, but if you repost this for any reason, please follow the capitalization convention: $ git log --oneline --follow drivers/pci/controller/pcie-cadence.c ee12c9efe685 PCI: cadence: Add Power Management ops for host and EP dfb80534692d PCI: cadence: Add generic PHY support to host and EP drivers 6e0832fa432e PCI: Collect all native drivers under drivers/pci/controller/ 37dddf14f1ae PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller > --- > drivers/pci/controller/pcie-cadence.c | 18 +++++++++++------- > 1 file changed, 11 insertions(+), 7 deletions(-) > > diff --git a/drivers/pci/controller/pcie-cadence.c b/drivers/pci/controller/pcie-cadence.c > index 86f1b00..67d2f98 100644 > --- a/drivers/pci/controller/pcie-cadence.c > +++ b/drivers/pci/controller/pcie-cadence.c > @@ -190,14 +190,16 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) > > for (i = 0; i < phy_count; i++) { > of_property_read_string_index(np, "phy-names", i, &name); > - phy[i] = devm_phy_optional_get(dev, name); > - if (IS_ERR(phy)) > - return PTR_ERR(phy); > - > + phy[i] = devm_phy_get(dev, name); > + if (IS_ERR(phy[i])) { > + ret = PTR_ERR(phy[i]); > + goto err_phy; > + } > link[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS); > if (!link[i]) { > + devm_phy_put(dev, phy[i]); > ret = -EINVAL; > - goto err_link; > + goto err_phy; > } > } > > @@ -207,13 +209,15 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) > > ret = cdns_pcie_enable_phy(pcie); > if (ret) > - goto err_link; > + goto err_phy; > > return 0; > > -err_link: > +err_phy: > while (--i >= 0) > device_link_del(link[i]); > + while (--i >= 0) > + devm_phy_put(dev, phy[i]); > > return ret; > } > -- > 1.9.0 >
On Wed, Sep 05, 2018 at 12:10:08PM -0500, Bjorn Helgaas wrote: > On Wed, Sep 05, 2018 at 05:20:08PM +0100, Alan Douglas wrote: > > Test the correct value to see whether the PHY get failed. > > If you intended a new paragraph here, please insert a blank line. > > > Use devm_phy_get() instead of devm_phy_optional_get(), since it is > > only called if phy name is given in devicetree and so should exist. > > If failure when getting or linking PHY, put any PHYs which were > > already got and unlink them. > > > > Fixes: dfb80534692ddc5b ("PCI: cadence: Add generic PHY support to host and EP drivers") > > Signed-off-by: Alan Douglas <adouglas@cadence.com> > > Lorenzo will probably take care of this for you, but if you repost this for > any reason, please follow the capitalization convention: > > $ git log --oneline --follow drivers/pci/controller/pcie-cadence.c > ee12c9efe685 PCI: cadence: Add Power Management ops for host and EP > dfb80534692d PCI: cadence: Add generic PHY support to host and EP drivers > 6e0832fa432e PCI: Collect all native drivers under drivers/pci/controller/ > 37dddf14f1ae PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller Done, updated the log and pushed to pci/cadence for v4.20, thanks. Lorenzo > > --- > > drivers/pci/controller/pcie-cadence.c | 18 +++++++++++------- > > 1 file changed, 11 insertions(+), 7 deletions(-) > > > > diff --git a/drivers/pci/controller/pcie-cadence.c b/drivers/pci/controller/pcie-cadence.c > > index 86f1b00..67d2f98 100644 > > --- a/drivers/pci/controller/pcie-cadence.c > > +++ b/drivers/pci/controller/pcie-cadence.c > > @@ -190,14 +190,16 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) > > > > for (i = 0; i < phy_count; i++) { > > of_property_read_string_index(np, "phy-names", i, &name); > > - phy[i] = devm_phy_optional_get(dev, name); > > - if (IS_ERR(phy)) > > - return PTR_ERR(phy); > > - > > + phy[i] = devm_phy_get(dev, name); > > + if (IS_ERR(phy[i])) { > > + ret = PTR_ERR(phy[i]); > > + goto err_phy; > > + } > > link[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS); > > if (!link[i]) { > > + devm_phy_put(dev, phy[i]); > > ret = -EINVAL; > > - goto err_link; > > + goto err_phy; > > } > > } > > > > @@ -207,13 +209,15 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) > > > > ret = cdns_pcie_enable_phy(pcie); > > if (ret) > > - goto err_link; > > + goto err_phy; > > > > return 0; > > > > -err_link: > > +err_phy: > > while (--i >= 0) > > device_link_del(link[i]); > > + while (--i >= 0) > > + devm_phy_put(dev, phy[i]); > > > > return ret; > > } > > -- > > 1.9.0 > >
diff --git a/drivers/pci/controller/pcie-cadence.c b/drivers/pci/controller/pcie-cadence.c index 86f1b00..67d2f98 100644 --- a/drivers/pci/controller/pcie-cadence.c +++ b/drivers/pci/controller/pcie-cadence.c @@ -190,14 +190,16 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) for (i = 0; i < phy_count; i++) { of_property_read_string_index(np, "phy-names", i, &name); - phy[i] = devm_phy_optional_get(dev, name); - if (IS_ERR(phy)) - return PTR_ERR(phy); - + phy[i] = devm_phy_get(dev, name); + if (IS_ERR(phy[i])) { + ret = PTR_ERR(phy[i]); + goto err_phy; + } link[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS); if (!link[i]) { + devm_phy_put(dev, phy[i]); ret = -EINVAL; - goto err_link; + goto err_phy; } } @@ -207,13 +209,15 @@ int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) ret = cdns_pcie_enable_phy(pcie); if (ret) - goto err_link; + goto err_phy; return 0; -err_link: +err_phy: while (--i >= 0) device_link_del(link[i]); + while (--i >= 0) + devm_phy_put(dev, phy[i]); return ret; }
Test the correct value to see whether the PHY get failed. Use devm_phy_get() instead of devm_phy_optional_get(), since it is only called if phy name is given in devicetree and so should exist. If failure when getting or linking PHY, put any PHYs which were already got and unlink them. Fixes: dfb80534692ddc5b ("PCI: cadence: Add generic PHY support to host and EP drivers") Signed-off-by: Alan Douglas <adouglas@cadence.com> --- drivers/pci/controller/pcie-cadence.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)