| Message ID | 1457325141-1354-1-git-send-email-shawn.lin@rock-chips.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Mon, Mar 07, 2016 at 12:32:21PM +0800, Shawn Lin wrote: > If the return value of devm_phy_get is EPROBE_DEFER, we should > defer probing the driver. > > Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Applied to pci/host-keystone for v4.6 with the following changelog. Thanks, Shawn! PCI: keystone: Defer probing if devm_phy_get() returns -EPROBE_DEFER A SerDes PHY is optional, so if devm_phy_get() doesn't find one at all, that's fine. But if devm_phy_get() finds a PHY that doesn't have a driver yet, it returns -EPROBE_DEFER. In that case, defer probing the Keystone driver. We may be able to load it later after a PHY driver is loaded. [bhelgaas: changelog] Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> > --- > > drivers/pci/host/pci-keystone.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c > index 0aa81bd..42af6ac 100644 > --- a/drivers/pci/host/pci-keystone.c > +++ b/drivers/pci/host/pci-keystone.c > @@ -363,6 +363,8 @@ static int __init ks_pcie_probe(struct platform_device *pdev) > ret = phy_init(phy); > if (ret < 0) > return ret; > + } else if (PTR_ERR(phy) == -EPROBE_DEFER) { > + return PTR_ERR(phy); > } > > /* index 2 is to read PCI DEVICE_ID */ > -- > 2.3.7 > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c index 0aa81bd..42af6ac 100644 --- a/drivers/pci/host/pci-keystone.c +++ b/drivers/pci/host/pci-keystone.c @@ -363,6 +363,8 @@ static int __init ks_pcie_probe(struct platform_device *pdev) ret = phy_init(phy); if (ret < 0) return ret; + } else if (PTR_ERR(phy) == -EPROBE_DEFER) { + return PTR_ERR(phy); } /* index 2 is to read PCI DEVICE_ID */
If the return value of devm_phy_get is EPROBE_DEFER, we should defer probing the driver. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> --- drivers/pci/host/pci-keystone.c | 2 ++ 1 file changed, 2 insertions(+)