| Message ID | 20240904-pci-qcom-gen4-stability-v6-1-ec39f7ae3f62@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: qcom: Add 16.0 GT/s equalization and margining settings | expand |
On Wed, Sep 04, 2024 at 12:41:57PM +0530, Manivannan Sadhasivam via B4 Relay wrote: > From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> > > 'link_gen' field is now holding the maximum supported link speed set either > by the controller driver or by DT through 'max-link-speed' property. > > But the name 'link_gen' sounds like the negotiated link speed of the PCIe > link. So let's rename it to 'max_link_speed' to make it clear that it holds > the maximum supported link speed of the controller. > > NOTE: For the sake of clarity, I've used 'max_link_speed' instead of > 'max_link_gen'. Also the link speed and link generation values map 1:1. > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
On Wed, Sep 04, 2024 at 12:41:57PM +0530, Manivannan Sadhasivam wrote: > 'link_gen' field is now holding the maximum supported link speed set either > by the controller driver or by DT through 'max-link-speed' property. > > But the name 'link_gen' sounds like the negotiated link speed of the PCIe > link. So let's rename it to 'max_link_speed' to make it clear that it holds > the maximum supported link speed of the controller. > > NOTE: For the sake of clarity, I've used 'max_link_speed' instead of > 'max_link_gen'. Also the link speed and link generation values map 1:1. Maybe a little confuse is about unit of max_link_speed. the word 'gen' (1, 2, 3...), we know it PCIe[1,2,3...]. But word "speed" look like should be some mHz. Reviewed-by: Frank Li <Frank.Li@nxp.com> > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> > --- > drivers/pci/controller/dwc/pci-imx6.c | 8 ++++---- > drivers/pci/controller/dwc/pcie-designware.c | 12 ++++++------ > drivers/pci/controller/dwc/pcie-designware.h | 2 +- > drivers/pci/controller/dwc/pcie-intel-gw.c | 4 ++-- > drivers/pci/controller/dwc/pcie-rcar-gen4.c | 6 +++--- > 5 files changed, 16 insertions(+), 16 deletions(-) > > diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c > index 964d67756eb2..ef12a4f31740 100644 > --- a/drivers/pci/controller/dwc/pci-imx6.c > +++ b/drivers/pci/controller/dwc/pci-imx6.c > @@ -847,12 +847,12 @@ static int imx6_pcie_start_link(struct dw_pcie *pci) > if (ret) > goto err_reset_phy; > > - if (pci->link_gen > 1) { > + if (pci->max_link_speed > 1) { > /* Allow faster modes after the link is up */ > dw_pcie_dbi_ro_wr_en(pci); > tmp = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCAP); > tmp &= ~PCI_EXP_LNKCAP_SLS; > - tmp |= pci->link_gen; > + tmp |= pci->max_link_speed; > dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCAP, tmp); > > /* > @@ -1386,8 +1386,8 @@ static int imx6_pcie_probe(struct platform_device *pdev) > imx6_pcie->tx_swing_low = 127; > > /* Limit link speed */ > - pci->link_gen = 1; > - of_property_read_u32(node, "fsl,max-link-speed", &pci->link_gen); > + pci->max_link_speed = 1; > + of_property_read_u32(node, "fsl,max-link-speed", &pci->max_link_speed); > > imx6_pcie->vpcie = devm_regulator_get_optional(&pdev->dev, "vpcie"); > if (IS_ERR(imx6_pcie->vpcie)) { > diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c > index 1b5aba1f0c92..86c49ba097c6 100644 > --- a/drivers/pci/controller/dwc/pcie-designware.c > +++ b/drivers/pci/controller/dwc/pcie-designware.c > @@ -166,8 +166,8 @@ int dw_pcie_get_resources(struct dw_pcie *pci) > return ret; > } > > - if (pci->link_gen < 1) > - pci->link_gen = of_pci_get_max_link_speed(np); > + if (pci->max_link_speed < 1) > + pci->max_link_speed = of_pci_get_max_link_speed(np); > > of_property_read_u32(np, "num-lanes", &pci->num_lanes); > > @@ -687,7 +687,7 @@ void dw_pcie_upconfig_setup(struct dw_pcie *pci) > } > EXPORT_SYMBOL_GPL(dw_pcie_upconfig_setup); > > -static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen) > +static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 max_link_speed) > { > u32 cap, ctrl2, link_speed; > u8 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); > @@ -696,7 +696,7 @@ static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen) > ctrl2 = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCTL2); > ctrl2 &= ~PCI_EXP_LNKCTL2_TLS; > > - switch (pcie_link_speed[link_gen]) { > + switch (pcie_link_speed[max_link_speed]) { > case PCIE_SPEED_2_5GT: > link_speed = PCI_EXP_LNKCTL2_TLS_2_5GT; > break; > @@ -1058,8 +1058,8 @@ void dw_pcie_setup(struct dw_pcie *pci) > { > u32 val; > > - if (pci->link_gen > 0) > - dw_pcie_link_set_max_speed(pci, pci->link_gen); > + if (pci->max_link_speed > 0) > + dw_pcie_link_set_max_speed(pci, pci->max_link_speed); > > /* Configure Gen1 N_FTS */ > if (pci->n_fts[0]) { > diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h > index 53c4c8f399c8..22765564f301 100644 > --- a/drivers/pci/controller/dwc/pcie-designware.h > +++ b/drivers/pci/controller/dwc/pcie-designware.h > @@ -421,7 +421,7 @@ struct dw_pcie { > u32 type; > unsigned long caps; > int num_lanes; > - int link_gen; > + int max_link_speed; > u8 n_fts[2]; > struct dw_edma_chip edma; > struct clk_bulk_data app_clks[DW_PCIE_NUM_APP_CLKS]; > diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c > index acbe4f6d3291..676d2aba4fbd 100644 > --- a/drivers/pci/controller/dwc/pcie-intel-gw.c > +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c > @@ -132,7 +132,7 @@ static void intel_pcie_link_setup(struct intel_pcie *pcie) > > static void intel_pcie_init_n_fts(struct dw_pcie *pci) > { > - switch (pci->link_gen) { > + switch (pci->max_link_speed) { > case 3: > pci->n_fts[1] = PORT_AFR_N_FTS_GEN3; > break; > @@ -252,7 +252,7 @@ static int intel_pcie_wait_l2(struct intel_pcie *pcie) > int ret; > struct dw_pcie *pci = &pcie->pci; > > - if (pci->link_gen < 3) > + if (pci->max_link_speed < 3) > return 0; > > /* Send PME_TURN_OFF message */ > diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c > index f0f3ebd1a033..00ad4832f2cf 100644 > --- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c > +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c > @@ -141,10 +141,10 @@ static int rcar_gen4_pcie_start_link(struct dw_pcie *dw) > } > > /* > - * Require direct speed change with retrying here if the link_gen is > - * PCIe Gen2 or higher. > + * Require direct speed change with retrying here if the max_link_speed > + * is PCIe Gen2 or higher. > */ > - changes = min_not_zero(dw->link_gen, RCAR_MAX_LINK_SPEED) - 1; > + changes = min_not_zero(dw->max_link_speed, RCAR_MAX_LINK_SPEED) - 1; > > /* > * Since dw_pcie_setup_rc() sets it once, PCIe Gen2 will be trained. > > -- > 2.25.1 >
On Wed, Sep 04, 2024 at 11:58:58AM -0400, Frank Li wrote: > On Wed, Sep 04, 2024 at 12:41:57PM +0530, Manivannan Sadhasivam wrote: > > 'link_gen' field is now holding the maximum supported link speed set either > > by the controller driver or by DT through 'max-link-speed' property. > > > > But the name 'link_gen' sounds like the negotiated link speed of the PCIe > > link. So let's rename it to 'max_link_speed' to make it clear that it holds > > the maximum supported link speed of the controller. > > > > NOTE: For the sake of clarity, I've used 'max_link_speed' instead of > > 'max_link_gen'. Also the link speed and link generation values map 1:1. > > Maybe a little confuse is about unit of max_link_speed. the word 'gen' > (1, 2, 3...), we know it PCIe[1,2,3...]. But word "speed" look like should > be some mHz. > Ideally, the DT property should've used the definitions in pci.h, but it ended up accepting the PCIe Gen version. Still, it is named as 'max-link-speed', so I wanted to keept the same name for the variable. - Mani > Reviewed-by: Frank Li <Frank.Li@nxp.com> > > > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> > > --- > > drivers/pci/controller/dwc/pci-imx6.c | 8 ++++---- > > drivers/pci/controller/dwc/pcie-designware.c | 12 ++++++------ > > drivers/pci/controller/dwc/pcie-designware.h | 2 +- > > drivers/pci/controller/dwc/pcie-intel-gw.c | 4 ++-- > > drivers/pci/controller/dwc/pcie-rcar-gen4.c | 6 +++--- > > 5 files changed, 16 insertions(+), 16 deletions(-) > > > > diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c > > index 964d67756eb2..ef12a4f31740 100644 > > --- a/drivers/pci/controller/dwc/pci-imx6.c > > +++ b/drivers/pci/controller/dwc/pci-imx6.c > > @@ -847,12 +847,12 @@ static int imx6_pcie_start_link(struct dw_pcie *pci) > > if (ret) > > goto err_reset_phy; > > > > - if (pci->link_gen > 1) { > > + if (pci->max_link_speed > 1) { > > /* Allow faster modes after the link is up */ > > dw_pcie_dbi_ro_wr_en(pci); > > tmp = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCAP); > > tmp &= ~PCI_EXP_LNKCAP_SLS; > > - tmp |= pci->link_gen; > > + tmp |= pci->max_link_speed; > > dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCAP, tmp); > > > > /* > > @@ -1386,8 +1386,8 @@ static int imx6_pcie_probe(struct platform_device *pdev) > > imx6_pcie->tx_swing_low = 127; > > > > /* Limit link speed */ > > - pci->link_gen = 1; > > - of_property_read_u32(node, "fsl,max-link-speed", &pci->link_gen); > > + pci->max_link_speed = 1; > > + of_property_read_u32(node, "fsl,max-link-speed", &pci->max_link_speed); > > > > imx6_pcie->vpcie = devm_regulator_get_optional(&pdev->dev, "vpcie"); > > if (IS_ERR(imx6_pcie->vpcie)) { > > diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c > > index 1b5aba1f0c92..86c49ba097c6 100644 > > --- a/drivers/pci/controller/dwc/pcie-designware.c > > +++ b/drivers/pci/controller/dwc/pcie-designware.c > > @@ -166,8 +166,8 @@ int dw_pcie_get_resources(struct dw_pcie *pci) > > return ret; > > } > > > > - if (pci->link_gen < 1) > > - pci->link_gen = of_pci_get_max_link_speed(np); > > + if (pci->max_link_speed < 1) > > + pci->max_link_speed = of_pci_get_max_link_speed(np); > > > > of_property_read_u32(np, "num-lanes", &pci->num_lanes); > > > > @@ -687,7 +687,7 @@ void dw_pcie_upconfig_setup(struct dw_pcie *pci) > > } > > EXPORT_SYMBOL_GPL(dw_pcie_upconfig_setup); > > > > -static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen) > > +static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 max_link_speed) > > { > > u32 cap, ctrl2, link_speed; > > u8 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); > > @@ -696,7 +696,7 @@ static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen) > > ctrl2 = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCTL2); > > ctrl2 &= ~PCI_EXP_LNKCTL2_TLS; > > > > - switch (pcie_link_speed[link_gen]) { > > + switch (pcie_link_speed[max_link_speed]) { > > case PCIE_SPEED_2_5GT: > > link_speed = PCI_EXP_LNKCTL2_TLS_2_5GT; > > break; > > @@ -1058,8 +1058,8 @@ void dw_pcie_setup(struct dw_pcie *pci) > > { > > u32 val; > > > > - if (pci->link_gen > 0) > > - dw_pcie_link_set_max_speed(pci, pci->link_gen); > > + if (pci->max_link_speed > 0) > > + dw_pcie_link_set_max_speed(pci, pci->max_link_speed); > > > > /* Configure Gen1 N_FTS */ > > if (pci->n_fts[0]) { > > diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h > > index 53c4c8f399c8..22765564f301 100644 > > --- a/drivers/pci/controller/dwc/pcie-designware.h > > +++ b/drivers/pci/controller/dwc/pcie-designware.h > > @@ -421,7 +421,7 @@ struct dw_pcie { > > u32 type; > > unsigned long caps; > > int num_lanes; > > - int link_gen; > > + int max_link_speed; > > u8 n_fts[2]; > > struct dw_edma_chip edma; > > struct clk_bulk_data app_clks[DW_PCIE_NUM_APP_CLKS]; > > diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c > > index acbe4f6d3291..676d2aba4fbd 100644 > > --- a/drivers/pci/controller/dwc/pcie-intel-gw.c > > +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c > > @@ -132,7 +132,7 @@ static void intel_pcie_link_setup(struct intel_pcie *pcie) > > > > static void intel_pcie_init_n_fts(struct dw_pcie *pci) > > { > > - switch (pci->link_gen) { > > + switch (pci->max_link_speed) { > > case 3: > > pci->n_fts[1] = PORT_AFR_N_FTS_GEN3; > > break; > > @@ -252,7 +252,7 @@ static int intel_pcie_wait_l2(struct intel_pcie *pcie) > > int ret; > > struct dw_pcie *pci = &pcie->pci; > > > > - if (pci->link_gen < 3) > > + if (pci->max_link_speed < 3) > > return 0; > > > > /* Send PME_TURN_OFF message */ > > diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c > > index f0f3ebd1a033..00ad4832f2cf 100644 > > --- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c > > +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c > > @@ -141,10 +141,10 @@ static int rcar_gen4_pcie_start_link(struct dw_pcie *dw) > > } > > > > /* > > - * Require direct speed change with retrying here if the link_gen is > > - * PCIe Gen2 or higher. > > + * Require direct speed change with retrying here if the max_link_speed > > + * is PCIe Gen2 or higher. > > */ > > - changes = min_not_zero(dw->link_gen, RCAR_MAX_LINK_SPEED) - 1; > > + changes = min_not_zero(dw->max_link_speed, RCAR_MAX_LINK_SPEED) - 1; > > > > /* > > * Since dw_pcie_setup_rc() sets it once, PCIe Gen2 will be trained. > > > > -- > > 2.25.1 > >
Hi Manivannan,
kernel test robot noticed the following build errors:
[auto build test ERROR on 47ac09b91befbb6a235ab620c32af719f8208399]
url: https://github.com/intel-lab-lkp/linux/commits/Manivannan-Sadhasivam-via-B4-Relay/PCI-dwc-Rename-dw_pcie-link_gen-to-dw_pcie-max_link_speed/20240904-151354
base: 47ac09b91befbb6a235ab620c32af719f8208399
patch link: https://lore.kernel.org/r/20240904-pci-qcom-gen4-stability-v6-1-ec39f7ae3f62%40linaro.org
patch subject: [PATCH v6 1/4] PCI: dwc: Rename 'dw_pcie::link_gen' to 'dw_pcie::max_link_speed'
config: arc-allmodconfig (https://download.01.org/0day-ci/archive/20240905/202409051650.UA8WoHFz-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240905/202409051650.UA8WoHFz-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409051650.UA8WoHFz-lkp@intel.com/
All errors (new ones prefixed by >>):
drivers/pci/controller/dwc/pcie-spear13xx.c: In function 'spear13xx_pcie_probe':
>> drivers/pci/controller/dwc/pcie-spear13xx.c:236:20: error: 'struct dw_pcie' has no member named 'link_gen'
236 | pci->link_gen = 1;
| ^~
vim +236 drivers/pci/controller/dwc/pcie-spear13xx.c
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 190
a43f32d64727302 drivers/pci/host/pcie-spear13xx.c Matwey V. Kornilov 2015-02-19 191 static int spear13xx_pcie_probe(struct platform_device *pdev)
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 192 {
6a43a425a074afc drivers/pci/host/pcie-spear13xx.c Bjorn Helgaas 2016-10-06 193 struct device *dev = &pdev->dev;
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 194 struct dw_pcie *pci;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 195 struct spear13xx_pcie *spear13xx_pcie;
6a43a425a074afc drivers/pci/host/pcie-spear13xx.c Bjorn Helgaas 2016-10-06 196 struct device_node *np = dev->of_node;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 197 int ret;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 198
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 199 spear13xx_pcie = devm_kzalloc(dev, sizeof(*spear13xx_pcie), GFP_KERNEL);
20f9ece101d8793 drivers/pci/host/pcie-spear13xx.c Jingoo Han 2014-11-12 200 if (!spear13xx_pcie)
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 201 return -ENOMEM;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 202
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 203 pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 204 if (!pci)
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 205 return -ENOMEM;
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 206
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 207 pci->dev = dev;
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 208 pci->ops = &dw_pcie_ops;
442ec4c04d1235f drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 209
c0464062bfea9cd drivers/pci/dwc/pcie-spear13xx.c Guenter Roeck 2017-02-25 210 spear13xx_pcie->pci = pci;
c0464062bfea9cd drivers/pci/dwc/pcie-spear13xx.c Guenter Roeck 2017-02-25 211
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 212 spear13xx_pcie->phy = devm_phy_get(dev, "pcie-phy");
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 213 if (IS_ERR(spear13xx_pcie->phy)) {
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 214 ret = PTR_ERR(spear13xx_pcie->phy);
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 215 if (ret == -EPROBE_DEFER)
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 216 dev_info(dev, "probe deferred\n");
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 217 else
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 218 dev_err(dev, "couldn't get pcie-phy\n");
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 219 return ret;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 220 }
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 221
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 222 phy_init(spear13xx_pcie->phy);
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 223
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 224 spear13xx_pcie->clk = devm_clk_get(dev, NULL);
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 225 if (IS_ERR(spear13xx_pcie->clk)) {
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 226 dev_err(dev, "couldn't get clk for pcie\n");
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 227 return PTR_ERR(spear13xx_pcie->clk);
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 228 }
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 229 ret = clk_prepare_enable(spear13xx_pcie->clk);
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 230 if (ret) {
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 231 dev_err(dev, "couldn't enable clk for pcie\n");
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 232 return ret;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 233 }
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 234
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 235 if (of_property_read_bool(np, "st,pcie-is-gen1"))
39bc5006501cc31 drivers/pci/controller/dwc/pcie-spear13xx.c Rob Herring 2020-08-20 @236 pci->link_gen = 1;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 237
9bcf0a6fdc5062e drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 238 platform_set_drvdata(pdev, spear13xx_pcie);
9bcf0a6fdc5062e drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 239
ffe82fa66afb19c drivers/pci/host/pcie-spear13xx.c Bjorn Helgaas 2016-10-06 240 ret = spear13xx_add_pcie_port(spear13xx_pcie, pdev);
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 241 if (ret < 0)
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 242 goto fail_clk;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 243
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 244 return 0;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 245
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 246 fail_clk:
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 247 clk_disable_unprepare(spear13xx_pcie->clk);
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 248
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 249 return ret;
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 250 }
51b66a6ce12570e drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 251
Hi Manivannan,
kernel test robot noticed the following build errors:
[auto build test ERROR on 47ac09b91befbb6a235ab620c32af719f8208399]
url: https://github.com/intel-lab-lkp/linux/commits/Manivannan-Sadhasivam-via-B4-Relay/PCI-dwc-Rename-dw_pcie-link_gen-to-dw_pcie-max_link_speed/20240904-151354
base: 47ac09b91befbb6a235ab620c32af719f8208399
patch link: https://lore.kernel.org/r/20240904-pci-qcom-gen4-stability-v6-1-ec39f7ae3f62%40linaro.org
patch subject: [PATCH v6 1/4] PCI: dwc: Rename 'dw_pcie::link_gen' to 'dw_pcie::max_link_speed'
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240906/202409060041.zY2BEBq7-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240906/202409060041.zY2BEBq7-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409060041.zY2BEBq7-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/pci/controller/dwc/pcie-spear13xx.c:236:8: error: no member named 'link_gen' in 'struct dw_pcie'
236 | pci->link_gen = 1;
| ~~~ ^
1 error generated.
vim +236 drivers/pci/controller/dwc/pcie-spear13xx.c
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 190
a43f32d6472730 drivers/pci/host/pcie-spear13xx.c Matwey V. Kornilov 2015-02-19 191 static int spear13xx_pcie_probe(struct platform_device *pdev)
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 192 {
6a43a425a074af drivers/pci/host/pcie-spear13xx.c Bjorn Helgaas 2016-10-06 193 struct device *dev = &pdev->dev;
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 194 struct dw_pcie *pci;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 195 struct spear13xx_pcie *spear13xx_pcie;
6a43a425a074af drivers/pci/host/pcie-spear13xx.c Bjorn Helgaas 2016-10-06 196 struct device_node *np = dev->of_node;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 197 int ret;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 198
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 199 spear13xx_pcie = devm_kzalloc(dev, sizeof(*spear13xx_pcie), GFP_KERNEL);
20f9ece101d879 drivers/pci/host/pcie-spear13xx.c Jingoo Han 2014-11-12 200 if (!spear13xx_pcie)
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 201 return -ENOMEM;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 202
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 203 pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 204 if (!pci)
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 205 return -ENOMEM;
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 206
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 207 pci->dev = dev;
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 208 pci->ops = &dw_pcie_ops;
442ec4c04d1235 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 209
c0464062bfea9c drivers/pci/dwc/pcie-spear13xx.c Guenter Roeck 2017-02-25 210 spear13xx_pcie->pci = pci;
c0464062bfea9c drivers/pci/dwc/pcie-spear13xx.c Guenter Roeck 2017-02-25 211
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 212 spear13xx_pcie->phy = devm_phy_get(dev, "pcie-phy");
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 213 if (IS_ERR(spear13xx_pcie->phy)) {
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 214 ret = PTR_ERR(spear13xx_pcie->phy);
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 215 if (ret == -EPROBE_DEFER)
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 216 dev_info(dev, "probe deferred\n");
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 217 else
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 218 dev_err(dev, "couldn't get pcie-phy\n");
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 219 return ret;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 220 }
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 221
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 222 phy_init(spear13xx_pcie->phy);
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 223
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 224 spear13xx_pcie->clk = devm_clk_get(dev, NULL);
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 225 if (IS_ERR(spear13xx_pcie->clk)) {
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 226 dev_err(dev, "couldn't get clk for pcie\n");
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 227 return PTR_ERR(spear13xx_pcie->clk);
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 228 }
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 229 ret = clk_prepare_enable(spear13xx_pcie->clk);
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 230 if (ret) {
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 231 dev_err(dev, "couldn't enable clk for pcie\n");
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 232 return ret;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 233 }
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 234
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 235 if (of_property_read_bool(np, "st,pcie-is-gen1"))
39bc5006501cc3 drivers/pci/controller/dwc/pcie-spear13xx.c Rob Herring 2020-08-20 @236 pci->link_gen = 1;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 237
9bcf0a6fdc5062 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 238 platform_set_drvdata(pdev, spear13xx_pcie);
9bcf0a6fdc5062 drivers/pci/dwc/pcie-spear13xx.c Kishon Vijay Abraham I 2017-02-15 239
ffe82fa66afb19 drivers/pci/host/pcie-spear13xx.c Bjorn Helgaas 2016-10-06 240 ret = spear13xx_add_pcie_port(spear13xx_pcie, pdev);
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 241 if (ret < 0)
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 242 goto fail_clk;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 243
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 244 return 0;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 245
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 246 fail_clk:
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 247 clk_disable_unprepare(spear13xx_pcie->clk);
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 248
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 249 return ret;
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 250 }
51b66a6ce12570 drivers/pci/host/pcie-spear13xx.c Pratyush Anand 2014-02-11 251
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 964d67756eb2..ef12a4f31740 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -847,12 +847,12 @@ static int imx6_pcie_start_link(struct dw_pcie *pci) if (ret) goto err_reset_phy; - if (pci->link_gen > 1) { + if (pci->max_link_speed > 1) { /* Allow faster modes after the link is up */ dw_pcie_dbi_ro_wr_en(pci); tmp = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCAP); tmp &= ~PCI_EXP_LNKCAP_SLS; - tmp |= pci->link_gen; + tmp |= pci->max_link_speed; dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCAP, tmp); /* @@ -1386,8 +1386,8 @@ static int imx6_pcie_probe(struct platform_device *pdev) imx6_pcie->tx_swing_low = 127; /* Limit link speed */ - pci->link_gen = 1; - of_property_read_u32(node, "fsl,max-link-speed", &pci->link_gen); + pci->max_link_speed = 1; + of_property_read_u32(node, "fsl,max-link-speed", &pci->max_link_speed); imx6_pcie->vpcie = devm_regulator_get_optional(&pdev->dev, "vpcie"); if (IS_ERR(imx6_pcie->vpcie)) { diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 1b5aba1f0c92..86c49ba097c6 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -166,8 +166,8 @@ int dw_pcie_get_resources(struct dw_pcie *pci) return ret; } - if (pci->link_gen < 1) - pci->link_gen = of_pci_get_max_link_speed(np); + if (pci->max_link_speed < 1) + pci->max_link_speed = of_pci_get_max_link_speed(np); of_property_read_u32(np, "num-lanes", &pci->num_lanes); @@ -687,7 +687,7 @@ void dw_pcie_upconfig_setup(struct dw_pcie *pci) } EXPORT_SYMBOL_GPL(dw_pcie_upconfig_setup); -static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen) +static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 max_link_speed) { u32 cap, ctrl2, link_speed; u8 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); @@ -696,7 +696,7 @@ static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen) ctrl2 = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCTL2); ctrl2 &= ~PCI_EXP_LNKCTL2_TLS; - switch (pcie_link_speed[link_gen]) { + switch (pcie_link_speed[max_link_speed]) { case PCIE_SPEED_2_5GT: link_speed = PCI_EXP_LNKCTL2_TLS_2_5GT; break; @@ -1058,8 +1058,8 @@ void dw_pcie_setup(struct dw_pcie *pci) { u32 val; - if (pci->link_gen > 0) - dw_pcie_link_set_max_speed(pci, pci->link_gen); + if (pci->max_link_speed > 0) + dw_pcie_link_set_max_speed(pci, pci->max_link_speed); /* Configure Gen1 N_FTS */ if (pci->n_fts[0]) { diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 53c4c8f399c8..22765564f301 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -421,7 +421,7 @@ struct dw_pcie { u32 type; unsigned long caps; int num_lanes; - int link_gen; + int max_link_speed; u8 n_fts[2]; struct dw_edma_chip edma; struct clk_bulk_data app_clks[DW_PCIE_NUM_APP_CLKS]; diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c index acbe4f6d3291..676d2aba4fbd 100644 --- a/drivers/pci/controller/dwc/pcie-intel-gw.c +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c @@ -132,7 +132,7 @@ static void intel_pcie_link_setup(struct intel_pcie *pcie) static void intel_pcie_init_n_fts(struct dw_pcie *pci) { - switch (pci->link_gen) { + switch (pci->max_link_speed) { case 3: pci->n_fts[1] = PORT_AFR_N_FTS_GEN3; break; @@ -252,7 +252,7 @@ static int intel_pcie_wait_l2(struct intel_pcie *pcie) int ret; struct dw_pcie *pci = &pcie->pci; - if (pci->link_gen < 3) + if (pci->max_link_speed < 3) return 0; /* Send PME_TURN_OFF message */ diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c index f0f3ebd1a033..00ad4832f2cf 100644 --- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c @@ -141,10 +141,10 @@ static int rcar_gen4_pcie_start_link(struct dw_pcie *dw) } /* - * Require direct speed change with retrying here if the link_gen is - * PCIe Gen2 or higher. + * Require direct speed change with retrying here if the max_link_speed + * is PCIe Gen2 or higher. */ - changes = min_not_zero(dw->link_gen, RCAR_MAX_LINK_SPEED) - 1; + changes = min_not_zero(dw->max_link_speed, RCAR_MAX_LINK_SPEED) - 1; /* * Since dw_pcie_setup_rc() sets it once, PCIe Gen2 will be trained.