Re: [PATCH v4 06/16] PCI: dwc: rockchip: Use cached PCIe capability offset
flat view
From: Shawn Lin <shawn.lin@rock-chips.com>
Date: 2026-10-27 12:36:52
Also in:
imx, linux-amlogic, linux-arm-msm, linux-pci, linux-riscv, linux-rockchip, linux-tegra, lkml, spacemit
在 2026/10/27 星期二 20:28, Hans Zhang 写道:
rockchip_pcie_enable_l0s() is called from rockchip_pcie_host_init(), i.e. from the .init callback, which runs after the controller clocks and resets have been enabled. Replace the capability search with dw_pcie_get_pcie_cap(), which reads and caches the offset at this very point.
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
quoted hunk ↗ jump to hunk
Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/controller/dwc/pcie-dw-rockchip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/drivers/pci/controller/dwc/pcie-dw-rockchip.c b/drivers/pci/controller/dwc/pcie-dw-rockchip.c index af26a07c0c9e..753606193855 100644 --- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c +++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c@@ -373,7 +373,7 @@ static void rockchip_pcie_enable_l0s(struct dw_pcie *pci) u32 cap, lnkcap; /* Enable L0S capability for all SoCs */ - cap = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); + cap = dw_pcie_get_pcie_cap(pci); if (cap) { lnkcap = dw_pcie_readl_dbi(pci, cap + PCI_EXP_LNKCAP); lnkcap |= PCI_EXP_LNKCAP_ASPM_L0S;