kernel: update to 6.6.2

[people/pmueller/ipfire-2.x.git] / src / patches / linux / aarch64 / 0006-pcie-rockchip-host-try-again-if-training-fail.patch

From 828dc7d5beca4c10db50330d1858cd70588bff5d Mon Sep 17 00:00:00 2001
From: Arne Fitzenreiter <arne_f@ipfire.org>
Date: Sat, 5 Feb 2022 15:35:57 +0000
Subject: [PATCH 6/8] pcie-rockchip-host: try again if training fail.

on NanoPi R4S the training of the pcie often fails at first try
so this try again some times.

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
---
 drivers/pci/controller/pcie-rockchip-host.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index afbbdccd195d..5d75189e64e5 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -959,8 +959,16 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
 	}
 
 	err = rockchip_pcie_host_init_port(rockchip);
-	if (err)
-		goto err_vpcie;
+	if (err) {
+		dev_err(dev, "failed to init port, try again...\n");
+		err = rockchip_pcie_host_init_port(rockchip);
+		if (err) {
+			dev_err(dev, "failed to init port, last try in 500ms.\n");
+			mdelay(500);
+			err = rockchip_pcie_host_init_port(rockchip);
+			if (err) goto err_vpcie;
+		}
+	}
 
 	err = rockchip_pcie_init_irq_domain(rockchip);
 	if (err < 0)
-- 
2.34.1