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net: dp83822: disable rx error interrupt

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commit 0e597e2aff upstream.

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: 87461f7a58 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Enguerrand de Ribaucourt 2022-06-23 15:46:45 +02:00 committed by Greg Kroah-Hartman
parent 5d191766a5
commit 92bb92cb25
1 changed files with 1 additions and 2 deletions
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3
drivers/net/phy/dp83822.c
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@ -228,8 +228,7 @@ 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);