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Date: Thu, 23 Jun 2022 15:46:45 +0200 From: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@...oirfairelinux.com> To: andrew@...n.ch Cc: davem@...emloft.net, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, linux@...linux.org.uk, hkallweit1@...il.com, Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@...oirfairelinux.com> Subject: [PATCH v3 2/2] 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. Signed-off-by: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@...oirfairelinux.com> Reviewed-by: Andrew Lunn <andrew@...n.ch> Fixes: 87461f7a58ab ("net: phy: DP83822 initial driver submission") --- drivers/net/phy/dp83822.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c index 95ef507053a6..8549e0e356c9 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); -- 2.25.1
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