From: Frank Li <Frank.Li@nxp.com>
To: frank.li@nxp.com, lpieralisi@kernel.org
Cc: Zhiqiang.Hou@nxp.com, bhelgaas@google.com, imx@lists.linux.dev,
kernel-janitors@vger.kernel.org, kw@linux.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, mani@kernel.org,
markus.elfring@web.de, minghuan.Lian@nxp.com, mingkai.hu@nxp.com,
robh@kernel.org, roy.zang@nxp.com, xiaowei.bao@nxp.com
Subject: [PATCH v4 1/2] PCI: layerscape: Add support for Link down notification
Date: Thu, 20 Jul 2023 09:58:33 -0400 [thread overview]
Message-ID: <20230720135834.1977616-1-Frank.Li@nxp.com> (raw)
Add support to pass Link down notification to Endpoint function driver
so that the LINK_DOWN event can be processed by the function.
Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Change from v2 to v4
- none
Change from v1 to v2
drivers/pci/controller/dwc/pci-layerscape-ep.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index de4c1758a6c3..e0969ff2ddf7 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -89,6 +89,7 @@ static irqreturn_t ls_pcie_ep_event_handler(int irq, void *dev_id)
dev_dbg(pci->dev, "Link up\n");
} else if (val & PEX_PF0_PME_MES_DR_LDD) {
dev_dbg(pci->dev, "Link down\n");
+ pci_epc_linkdown(pci->ep.epc);
} else if (val & PEX_PF0_PME_MES_DR_HRD) {
dev_dbg(pci->dev, "Hot reset\n");
}
--
2.34.1
next reply other threads:[~2023-07-20 13:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-20 13:58 Frank Li [this message]
2023-07-20 13:58 ` [PATCH v4 2/2] PCI: layerscape: Add the workaround for lost link capabilities during reset Frank Li
2023-07-31 15:06 ` [PATCH v4 1/2] PCI: layerscape: Add support for Link down notification Frank Li
2023-08-16 15:53 ` Frank Li
2023-08-23 15:54 ` Frank Li
2023-08-23 16:11 ` Lorenzo Pieralisi
2023-08-24 8:14 ` Lorenzo Pieralisi
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