From 1ae92418ba8002c6eb77eda34cc0f998fc9ef094 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20En=C3=9Flin?= <michael@ensslin.cc>
Date: Tue, 16 Jun 2020 12:04:46 +0200
Subject: [PATCH] let core reject the unsupported coalescing parameters (#5)

Set ethtool_ops->supported_coalesce_params to let the core reject unsupported coalescing parameters.

Required for Linux 5.7 support; otherwise, driver initialization will fail with 'couldn't register device' (errno 22).

See upstream kernel commit id 9000edb71ab29d184aa33f5a77fa6e52d8812bb9 for more pieces of info.
---
 r8152.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/r8152.c b/r8152.c
index 1037849..e706c35 100644
--- a/r8152.c
+++ b/r8152.c
@@ -17134,6 +17134,9 @@ static int rtl8152_set_ringparam(struct net_device *netdev,
 }
 
 static const struct ethtool_ops ops = {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)
+        .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
+#endif
 	.get_drvinfo = rtl8152_get_drvinfo,
 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
 	.get_settings = rtl8152_get_settings,