Message ID | 20201230120515.2348-2-nadeem@cadence.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Wed, 30 Dec 2020 13:05:24 +0100 Received: from vleu-orange.cadence.com (10.160.88.83) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server (TLS) id 15.0.1367.3 via Frontend Transport; Wed, 30 Dec 2020 13:05:24 +0100 Received: from vleu-orange.cadence.com (localhost.localdomain [127.0.0.1]) by vleu-orange.cadence.com (8.14.4/8.14.4) with ESMTP id 0BUC5OtD002403; Wed, 30 Dec 2020 13:05:24 +0100 Received: (from nadeem@localhost) by vleu-orange.cadence.com (8.14.4/8.14.4/Submit) id 0BUC5Ohb002402; Wed, 30 Dec 2020 13:05:24 +0100 From: Nadeem Athani <nadeem@cadence.com> To: <tjoseph@cadence.com>, <lorenzo.pieralisi@arm.com>, <robh@kernel.org>, <bhelgaas@google.com>, <kishon@ti.com>, <linux-omap@vger.kernel.org>, <linux-pci@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org> Subject: [PATCH v7 1/2] PCI: cadence: Shifting of a function to support new code. 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Series |
PCI: cadence: Retrain Link to work around Gen2
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expand
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diff --git a/drivers/pci/controller/cadence/pcie-cadence-host.c b/drivers/pci/controller/cadence/pcie-cadence-host.c index 811c1cb2e8de..9f7aa718c8d4 100644 --- a/drivers/pci/controller/cadence/pcie-cadence-host.c +++ b/drivers/pci/controller/cadence/pcie-cadence-host.c @@ -77,6 +77,22 @@ static struct pci_ops cdns_pcie_host_ops = { .write = pci_generic_config_write, }; +static int cdns_pcie_host_wait_for_link(struct cdns_pcie *pcie) +{ + struct device *dev = pcie->dev; + int retries; + + /* Check if the link is up or not */ + for (retries = 0; retries < LINK_WAIT_MAX_RETRIES; retries++) { + if (cdns_pcie_link_up(pcie)) { + dev_info(dev, "Link up\n"); + return 0; + } + usleep_range(LINK_WAIT_USLEEP_MIN, LINK_WAIT_USLEEP_MAX); + } + + return -ETIMEDOUT; +} static int cdns_pcie_host_init_root_port(struct cdns_pcie_rc *rc) { @@ -398,23 +414,6 @@ static int cdns_pcie_host_init(struct device *dev, return cdns_pcie_host_init_address_translation(rc); } -static int cdns_pcie_host_wait_for_link(struct cdns_pcie *pcie) -{ - struct device *dev = pcie->dev; - int retries; - - /* Check if the link is up or not */ - for (retries = 0; retries < LINK_WAIT_MAX_RETRIES; retries++) { - if (cdns_pcie_link_up(pcie)) { - dev_info(dev, "Link up\n"); - return 0; - } - usleep_range(LINK_WAIT_USLEEP_MIN, LINK_WAIT_USLEEP_MAX); - } - - return -ETIMEDOUT; -} - int cdns_pcie_host_setup(struct cdns_pcie_rc *rc) { struct device *dev = rc->pcie.dev;
Move the function cdns_pcie_host_wait_for_link() further up in the file, as it's going to be used by upcoming additional code in the driver. Signed-off-by: Nadeem Athani <nadeem@cadence.com> --- drivers/pci/controller/cadence/pcie-cadence-host.c | 33 +++++++++++----------- 1 file changed, 16 insertions(+), 17 deletions(-)