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(unknown []) by gzga-smtp-mtada-g0-2 (Coremail) with SMTP id _____wDX+mO9OV5q8LEOKg--.8910S9; Mon, 20 Jul 2026 23:07:49 +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 07/16] PCI: dwc: eswin: Use cached PCIe capability offset Date: Mon, 20 Jul 2026 23:06:10 +0800 Message-Id: <20260720150619.24733-8-18255117159@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> MIME-Version: 1.0 X-CM-TRANSID: _____wDX+mO9OV5q8LEOKg--.8910S9 X-Coremail-Antispam: 1Uf129KBjvdXoWrKF4UZFW8XF4kWw18tr1DZFb_yoWkuFXE9a 4DKr9rAr47GF90k3Zavw4fAF9Fya4xXr1293WFyF9xZFyIgr1jgrnFqF98AFWxCFn5XFyr Jr4qvFyxAryUJjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRNF4EPUUUUU== X-Originating-IP: [240e:b8f:91b3:d000:f138:f837:e143:4264] X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbC6wWxVWpeOcVuzQAA3h X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260720_080808_114556_1607488C X-CRM114-Status: UNSURE ( 8.60 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org This function is called after dw_pcie_host_init() has already cached the offset (dw_pcie_link_up() is called after .init and after caching). Therefore, we can directly use pci->pcie_cap. Signed-off-by: Hans Zhang <18255117159@163.com> --- In pcie-eswin, the call chain is: static const struct dw_pcie_ops dw_pcie_ops = { .link_up = eswin_pcie_link_up, }; eswin_pcie_link_up() -> dw_pcie_find_capability() --- drivers/pci/controller/dwc/pcie-eswin.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-eswin.c b/drivers/pci/controller/dwc/pcie-eswin.c index ce8d64f8a395..6a37fd5a8384 100644 --- a/drivers/pci/controller/dwc/pcie-eswin.c +++ b/drivers/pci/controller/dwc/pcie-eswin.c @@ -84,8 +84,7 @@ static int eswin_pcie_start_link(struct dw_pcie *pci) static bool eswin_pcie_link_up(struct dw_pcie *pci) { - u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); - u16 val = dw_pcie_readw_dbi(pci, offset + PCI_EXP_LNKSTA); + u16 val = dw_pcie_readw_dbi(pci, pci->pcie_cap + PCI_EXP_LNKSTA); return val & PCI_EXP_LNKSTA_DLLLA; } -- 2.34.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic