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(unknown []) by gzga-smtp-mtada-g1-3 (Coremail) with SMTP id _____wDX5ybVOV5q0OGYJQ--.29751S2; Mon, 20 Jul 2026 23:08:06 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, jingoohan1@gmail.com Cc: imx@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-amlogic@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-arm-msm@vger.kernel.org, sophgo@lists.linux.dev, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-tegra@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Hans Zhang <18255117159@163.com> Subject: [PATCH v3 16/16] PCI: dwc: ultrarisc: Use cached PCIe capability offset Date: Mon, 20 Jul 2026 23:06:19 +0800 Message-Id: <20260720150619.24733-17-18255117159@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260720150619.24733-1-18255117159@163.com> References: <20260720150619.24733-1-18255117159@163.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:_____wDX5ybVOV5q0OGYJQ--.29751S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7ZFy7CF43CF1xGry8JFy7KFg_yoW8Grykpa y3WryjyF1Dtr4YvFs2v3WDXF13tFnxAr9xJanrGrnIvF1akrWUJ390k34rtFn7GFWUKryY kr1YyFy5Ga4rtwUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pi0tCwUUUUU= X-Originating-IP: [240e:b8f:91b3:d000:f138:f837:e143:4264] X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbCxBa1WWpeOdYHFAAA32 Inside .init we call dw_pcie_get_pcie_cap() to obtain the offset, because the core has not yet cached it. Hardware is already enabled by the driver before this point. Signed-off-by: Hans Zhang <18255117159@163.com> --- In pcie-ultrarisc, the call chain is: static const struct dw_pcie_host_ops ultrarisc_pcie_host_ops = { .init = ultrarisc_pcie_host_init, }; ultrarisc_pcie_host_init() -> dw_pcie_find_capability() --- drivers/pci/controller/dwc/pcie-ultrarisc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-ultrarisc.c b/drivers/pci/controller/dwc/pcie-ultrarisc.c index 6ee661ceff67..3f6e3ab0aa69 100644 --- a/drivers/pci/controller/dwc/pcie-ultrarisc.c +++ b/drivers/pci/controller/dwc/pcie-ultrarisc.c @@ -49,7 +49,7 @@ static int ultrarisc_pcie_host_init(struct dw_pcie_rp *pp) FIELD_MODIFY(PORT_FLT_SF_MASK, &val, PORT_FLT_SF_VAL_64); dw_pcie_writel_dbi(pci, PCIE_TIMER_CTRL_MAX_FUNC_NUM, val); - cap_exp = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); + cap_exp = dw_pcie_get_pcie_cap(pci); val = dw_pcie_readl_dbi(pci, cap_exp + PCI_EXP_LNKCTL2); FIELD_MODIFY(PCI_EXP_LNKCTL2_TLS, &val, PCI_EXP_LNKCTL2_TLS_16_0GT); dw_pcie_writel_dbi(pci, cap_exp + PCI_EXP_LNKCTL2, val); -- 2.34.1