lkml.org 
[lkml]   [2022]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v11 6/8] PCI: imx6: Mark the link down as none fatal error
Date
let the driver probe successfully, return zero in imx6_pcie_start_link()
when PCIe link is down.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
---
drivers/pci/controller/dwc/pci-imx6.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index c05974abd954..68d0bd703bbd 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -850,7 +850,9 @@ static int imx6_pcie_start_link(struct dw_pcie *pci)
/* Start LTSSM. */
imx6_pcie_ltssm_enable(dev);

- dw_pcie_wait_for_link(pci);
+ ret = dw_pcie_wait_for_link(pci);
+ if (ret)
+ goto err_reset_phy;

if (pci->link_gen == 2) {
/* Allow Gen2 mode after the link is up. */
@@ -886,7 +888,9 @@ static int imx6_pcie_start_link(struct dw_pcie *pci)
}

/* Make sure link training is finished as well! */
- dw_pcie_wait_for_link(pci);
+ ret = dw_pcie_wait_for_link(pci);
+ if (ret)
+ goto err_reset_phy;
} else {
dev_info(dev, "Link: Gen2 disabled\n");
}
@@ -900,7 +904,7 @@ static int imx6_pcie_start_link(struct dw_pcie *pci)
dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG0),
dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG1));
imx6_pcie_reset_phy(imx6_pcie);
- return ret;
+ return 0;
}

static int imx6_pcie_host_init(struct pcie_port *pp)
--
2.25.1
\
 
 \ /
  Last update: 2022-06-14 09:14    [W:0.059 / U:0.592 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site