From: Lucas Stach <l.stach@pengutronix.de>
To: Andrey Smirnov <andrew.smirnov@gmail.com>, linux-pci@vger.kernel.org
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Chris Healy <cphealy@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 02/11] PCI: imx6: Drop imx6_pcie_wait_for_link()
Date: Mon, 15 Apr 2019 10:36:52 +0200 [thread overview]
Message-ID: <1555317412.2983.0.camel@pengutronix.de> (raw)
In-Reply-To: <20190415004632.5907-3-andrew.smirnov@gmail.com>
Am Sonntag, den 14.04.2019, 17:46 -0700 schrieb Andrey Smirnov:
> All calls to imx6_pcie_wait_for_link() share the same error path and
> the state of PHY debug registers will already be printed there, so
> there's no real reason we can't just use dw_pcie_wait_for_link(). Drop
> imx6_pcie_wait_for_link() and replace it with dw_pcie_wait_for_link().
>
> > Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> > Suggested-by: Lucas Stach <l.stach@pengutronix.de>
> > Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> > Cc: Bjorn Helgaas <bhelgaas@google.com>
> > Cc: Chris Healy <cphealy@gmail.com>
> > Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
> ---
> drivers/pci/controller/dwc/pci-imx6.c | 19 ++-----------------
> 1 file changed, 2 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index ea2617712a3b..bb3dcfdbf697 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -723,21 +723,6 @@ static int imx6_setup_phy_mpll(struct imx6_pcie *imx6_pcie)
> > return 0;
> }
>
> -static int imx6_pcie_wait_for_link(struct imx6_pcie *imx6_pcie)
> -{
> > - struct dw_pcie *pci = imx6_pcie->pci;
> > - struct device *dev = pci->dev;
> -
> > - /* check if the link is up or not */
> > - if (!dw_pcie_wait_for_link(pci))
> > - return 0;
> -
> > - dev_dbg(dev, "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n",
> > - dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R0),
> > - dw_pcie_readl_dbi(pci, PCIE_PHY_DEBUG_R1));
> > - return -ETIMEDOUT;
> -}
> -
> static int imx6_pcie_wait_for_speed_change(struct imx6_pcie *imx6_pcie)
> {
> > struct dw_pcie *pci = imx6_pcie->pci;
> @@ -796,7 +781,7 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie)
> > /* Start LTSSM. */
> > imx6_pcie_ltssm_enable(dev);
>
> > - ret = imx6_pcie_wait_for_link(imx6_pcie);
> > + ret = dw_pcie_wait_for_link(pci);
> > if (ret)
> > goto err_reset_phy;
>
> @@ -834,7 +819,7 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie)
> > }
>
> > /* Make sure link training is finished as well! */
> > - ret = imx6_pcie_wait_for_link(imx6_pcie);
> > + ret = dw_pcie_wait_for_link(pci);
> > if (ret) {
> > dev_err(dev, "Failed to bring link up!\n");
> > goto err_reset_phy;
next prev parent reply other threads:[~2019-04-15 8:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 0:46 [PATCH v4 00/11] i.MX6, DesignWare PCI improvements Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 01/11] PCI: imx6: Simplify imx7d_pcie_wait_for_phy_pll_lock() Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 02/11] PCI: imx6: Drop imx6_pcie_wait_for_link() Andrey Smirnov
2019-04-15 8:36 ` Lucas Stach [this message]
2019-04-15 0:46 ` [PATCH v4 03/11] PCI: imx6: Return -ETIMEOUT from imx6_pcie_wait_for_speed_change() Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 04/11] PCI: imx6: Remove PCIE_PL_PFLR_* constants Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 05/11] PCI: dwc: imx6: Share PHY debug register definitions Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 06/11] PCI: imx6: Make use of BIT() in constant definitions Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 07/11] PCI: imx6: Simplify bit operations in PHY functions Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 08/11] PCI: imx6: Simplify pcie_phy_poll_ack() Andrey Smirnov
2019-04-15 8:38 ` Lucas Stach
2019-04-15 0:46 ` [PATCH v4 09/11] PCI: imx6: Restrict PHY register data to 16-bit Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 10/11] PCI: imx6: Use flags to indicate support for suspend Andrey Smirnov
2019-04-15 0:46 ` [PATCH v4 11/11] PCI: imx6: Use usleep_range() in imx6_pcie_enable_ref_clk() Andrey Smirnov
2019-04-15 8:38 ` Lucas Stach
2019-05-01 10:39 ` [PATCH v4 00/11] i.MX6, DesignWare PCI improvements Lorenzo Pieralisi
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