From: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@savoirfairelinux.com>
Date: Thu, 23 Jun 2022 13:46:45 +0000 (+0200)
Subject: net: dp83822: disable rx error interrupt
X-Git-Tag: baikal/aarch64/sdk6.1~3633^2~34^2
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=0aeada45f92f21215ca3ed577d04c399106bb780;p=kernel.git

net: dp83822: disable rx error interrupt

Some RX errors, notably when disconnecting the cable, increase the RCSR
register. Once half full (0x7fff), an interrupt flood is generated. I
measured ~3k/s interrupts even after the RX errors transfer was
stopped.

Since we don't read and clear the RCSR register, we should disable this
interrupt.

Fixes: 60ce3f0822f5 ("net: phy: DP83822 initial driver submission")
Signed-off-by: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
index 95ef507053a66..8549e0e356c9b 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c
@@ -229,8 +229,7 @@ static int dp83822_config_intr(struct phy_device *phydev)
 		if (misr_status < 0)
 			return misr_status;
 
-		misr_status |= (DP83822_RX_ERR_HF_INT_EN |
-				DP83822_LINK_STAT_INT_EN |
+		misr_status |= (DP83822_LINK_STAT_INT_EN |
 				DP83822_ENERGY_DET_INT_EN |
 				DP83822_LINK_QUAL_INT_EN);