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Date: Sat, 18 Jun 2022 09:26:49 +0200 From: Christian Marangi <ansuelsmth@...il.com> To: Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, Florian Fainelli <f.fainelli@...il.com>, Vladimir Oltean <olteanv@...il.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Jonathan McDowell <noodles@...th.li>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Christian Marangi <ansuelsmth@...il.com> Subject: [RESEND net-next PATCH 2/3] net: dsa: qca8k: change only max_frame_size of mac_frame_size_reg Currently we overwrite the entire MAX_FRAME_SIZE reg instead of tweaking just the MAX_FRAME_SIZE value. Change this and update only the relevant bits. Signed-off-by: Christian Marangi <ansuelsmth@...il.com> --- drivers/net/dsa/qca8k.c | 8 ++++++-- drivers/net/dsa/qca8k.h | 3 ++- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c index 2727d3169c25..eaaf80f96fa9 100644 --- a/drivers/net/dsa/qca8k.c +++ b/drivers/net/dsa/qca8k.c @@ -2345,7 +2345,9 @@ qca8k_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu) return 0; /* Include L2 header / FCS length */ - return qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, new_mtu + ETH_HLEN + ETH_FCS_LEN); + return regmap_update_bits(priv->regmap, QCA8K_MAX_FRAME_SIZE_REG, + QCA8K_MAX_FRAME_SIZE_MASK, + new_mtu + ETH_HLEN + ETH_FCS_LEN); } static int @@ -3015,7 +3017,9 @@ qca8k_setup(struct dsa_switch *ds) } /* Setup our port MTUs to match power on defaults */ - ret = qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, ETH_FRAME_LEN + ETH_FCS_LEN); + ret = regmap_update_bits(priv->regmap, QCA8K_MAX_FRAME_SIZE_REG, + QCA8K_MAX_FRAME_SIZE_MASK, + ETH_FRAME_LEN + ETH_FCS_LEN); if (ret) dev_warn(priv->dev, "failed setting MTU settings"); diff --git a/drivers/net/dsa/qca8k.h b/drivers/net/dsa/qca8k.h index ec58d0e80a70..1d0c383a95e7 100644 --- a/drivers/net/dsa/qca8k.h +++ b/drivers/net/dsa/qca8k.h @@ -87,7 +87,8 @@ #define QCA8K_MDIO_MASTER_MAX_REG 32 #define QCA8K_GOL_MAC_ADDR0 0x60 #define QCA8K_GOL_MAC_ADDR1 0x64 -#define QCA8K_MAX_FRAME_SIZE 0x78 +#define QCA8K_MAX_FRAME_SIZE_REG 0x78 +#define QCA8K_MAX_FRAME_SIZE_MASK GENMASK(13, 0) #define QCA8K_REG_PORT_STATUS(_i) (0x07c + (_i) * 4) #define QCA8K_PORT_STATUS_SPEED GENMASK(1, 0) #define QCA8K_PORT_STATUS_SPEED_10 0 -- 2.36.1
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