From: Frank Li <Frank.Li@nxp.com>
To: markus.elfring@web.de, lpieralisi@kernel.org
Cc: imx@lists.linux.dev, xiaowei.bao@nxp.com, kw@linux.com,
Frank.Li@nxp.com, Zhiqiang.Hou@nxp.com, mani@kernel.org,
kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
minghuan.Lian@nxp.com, mingkai.hu@nxp.com,
linux-pci@vger.kernel.org, bhelgaas@google.com, roy.zang@nxp.com,
linuxppc-dev@lists.ozlabs.org, robh@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 1/2] PCI: layerscape: Add support for Link down notification
Date: Wed, 19 Jul 2023 11:57:06 -0400 [thread overview]
Message-ID: <20230719155707.1948698-1-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 v3
- none
Change from v1 to v2
- move pci_epc_linkdown() after dev_dbg()
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:[~2023-07-19 15:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-19 15:57 Frank Li [this message]
2023-07-19 15:57 ` [PATCH v3 2/2] PCI: layerscape: Add the workaround for lost link capabilities during reset Frank Li
2023-07-19 22:23 ` Frank Li
2023-07-19 19:27 ` [PATCH v3 1/2] PCI: layerscape: Add support for Link down notification Markus Elfring
2023-07-19 19:44 ` Frank Li
2023-07-19 20:08 ` [v3 " Markus Elfring
2023-07-19 21:14 ` Frank Li
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