October 2021 - Linux-stable-mirror

FAILED: patch "[PATCH] phy: phy_start_aneg: Add an unlocked version" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 707293a56f95f8e7e0cfae008010c7933fb68973 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:04 +0200 Subject: [PATCH] phy: phy_start_aneg: Add an unlocked version Split phy_start_aneg into a wrapper which takes the PHY lock, and a helper doing the real work. This will be needed when phy_ethtook_ksettings_set takes the lock. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index ee584fa8b76d..d845afab1af7 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -700,7 +700,7 @@ static int phy_check_link_status(struct phy_device *phydev) } /** - * phy_start_aneg - start auto-negotiation for this PHY device + * _phy_start_aneg - start auto-negotiation for this PHY device * @phydev: the phy_device struct * * Description: Sanitizes the settings (if we're not autonegotiating @@ -708,25 +708,43 @@ static int phy_check_link_status(struct phy_device *phydev) * If the PHYCONTROL Layer is operating, we change the state to * reflect the beginning of Auto-negotiation or forcing. */ -int phy_start_aneg(struct phy_device *phydev) +static int _phy_start_aneg(struct phy_device *phydev) { int err; + lockdep_assert_held(&phydev->lock); + if (!phydev->drv) return -EIO; - mutex_lock(&phydev->lock); - if (AUTONEG_DISABLE == phydev->autoneg) phy_sanitize_settings(phydev); err = phy_config_aneg(phydev); if (err < 0) - goto out_unlock; + return err; if (phy_is_started(phydev)) err = phy_check_link_status(phydev); -out_unlock: + + return err; +} + +/** + * phy_start_aneg - start auto-negotiation for this PHY device + * @phydev: the phy_device struct + * + * Description: Sanitizes the settings (if we're not autonegotiating + * them), and then calls the driver's config_aneg function. + * If the PHYCONTROL Layer is operating, we change the state to + * reflect the beginning of Auto-negotiation or forcing. + */ +int phy_start_aneg(struct phy_device *phydev) +{ + int err; + + mutex_lock(&phydev->lock); + err = _phy_start_aneg(phydev); mutex_unlock(&phydev->lock); return err;

2 years, 6 months

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FAILED: patch "[PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 64cd92d5e8180c2ded3fdea76862de6f596ae2c9 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:03 +0200 Subject: [PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg This allows it to make use of a helper which assume the PHY is already locked. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 8457b829667e..ee584fa8b76d 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -243,59 +243,6 @@ static void phy_sanitize_settings(struct phy_device *phydev) } } -int phy_ethtool_ksettings_set(struct phy_device *phydev, - const struct ethtool_link_ksettings *cmd) -{ - __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); - u8 autoneg = cmd->base.autoneg; - u8 duplex = cmd->base.duplex; - u32 speed = cmd->base.speed; - - if (cmd->base.phy_address != phydev->mdio.addr) - return -EINVAL; - - linkmode_copy(advertising, cmd->link_modes.advertising); - - /* We make sure that we don't pass unsupported values in to the PHY */ - linkmode_and(advertising, advertising, phydev->supported); - - /* Verify the settings we care about. */ - if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) - return -EINVAL; - - if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) - return -EINVAL; - - if (autoneg == AUTONEG_DISABLE && - ((speed != SPEED_1000 && - speed != SPEED_100 && - speed != SPEED_10) || - (duplex != DUPLEX_HALF && - duplex != DUPLEX_FULL))) - return -EINVAL; - - phydev->autoneg = autoneg; - - if (autoneg == AUTONEG_DISABLE) { - phydev->speed = speed; - phydev->duplex = duplex; - } - - linkmode_copy(phydev->advertising, advertising); - - linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, - phydev->advertising, autoneg == AUTONEG_ENABLE); - - phydev->master_slave_set = cmd->base.master_slave_cfg; - phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; - - /* Restart the PHY */ - phy_start_aneg(phydev); - - return 0; -} -EXPORT_SYMBOL(phy_ethtool_ksettings_set); - void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { @@ -802,6 +749,59 @@ static int phy_poll_aneg_done(struct phy_device *phydev) return ret < 0 ? ret : 0; } +int phy_ethtool_ksettings_set(struct phy_device *phydev, + const struct ethtool_link_ksettings *cmd) +{ + __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); + u8 autoneg = cmd->base.autoneg; + u8 duplex = cmd->base.duplex; + u32 speed = cmd->base.speed; + + if (cmd->base.phy_address != phydev->mdio.addr) + return -EINVAL; + + linkmode_copy(advertising, cmd->link_modes.advertising); + + /* We make sure that we don't pass unsupported values in to the PHY */ + linkmode_and(advertising, advertising, phydev->supported); + + /* Verify the settings we care about. */ + if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) + return -EINVAL; + + if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) + return -EINVAL; + + if (autoneg == AUTONEG_DISABLE && + ((speed != SPEED_1000 && + speed != SPEED_100 && + speed != SPEED_10) || + (duplex != DUPLEX_HALF && + duplex != DUPLEX_FULL))) + return -EINVAL; + + phydev->autoneg = autoneg; + + if (autoneg == AUTONEG_DISABLE) { + phydev->speed = speed; + phydev->duplex = duplex; + } + + linkmode_copy(phydev->advertising, advertising); + + linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + phydev->advertising, autoneg == AUTONEG_ENABLE); + + phydev->master_slave_set = cmd->base.master_slave_cfg; + phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; + + /* Restart the PHY */ + phy_start_aneg(phydev); + + return 0; +} +EXPORT_SYMBOL(phy_ethtool_ksettings_set); + /** * phy_speed_down - set speed to lowest speed supported by both link partners * @phydev: the phy_device struct

2 years, 6 months

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FAILED: patch "[PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 64cd92d5e8180c2ded3fdea76862de6f596ae2c9 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:03 +0200 Subject: [PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg This allows it to make use of a helper which assume the PHY is already locked. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 8457b829667e..ee584fa8b76d 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -243,59 +243,6 @@ static void phy_sanitize_settings(struct phy_device *phydev) } } -int phy_ethtool_ksettings_set(struct phy_device *phydev, - const struct ethtool_link_ksettings *cmd) -{ - __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); - u8 autoneg = cmd->base.autoneg; - u8 duplex = cmd->base.duplex; - u32 speed = cmd->base.speed; - - if (cmd->base.phy_address != phydev->mdio.addr) - return -EINVAL; - - linkmode_copy(advertising, cmd->link_modes.advertising); - - /* We make sure that we don't pass unsupported values in to the PHY */ - linkmode_and(advertising, advertising, phydev->supported); - - /* Verify the settings we care about. */ - if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) - return -EINVAL; - - if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) - return -EINVAL; - - if (autoneg == AUTONEG_DISABLE && - ((speed != SPEED_1000 && - speed != SPEED_100 && - speed != SPEED_10) || - (duplex != DUPLEX_HALF && - duplex != DUPLEX_FULL))) - return -EINVAL; - - phydev->autoneg = autoneg; - - if (autoneg == AUTONEG_DISABLE) { - phydev->speed = speed; - phydev->duplex = duplex; - } - - linkmode_copy(phydev->advertising, advertising); - - linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, - phydev->advertising, autoneg == AUTONEG_ENABLE); - - phydev->master_slave_set = cmd->base.master_slave_cfg; - phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; - - /* Restart the PHY */ - phy_start_aneg(phydev); - - return 0; -} -EXPORT_SYMBOL(phy_ethtool_ksettings_set); - void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { @@ -802,6 +749,59 @@ static int phy_poll_aneg_done(struct phy_device *phydev) return ret < 0 ? ret : 0; } +int phy_ethtool_ksettings_set(struct phy_device *phydev, + const struct ethtool_link_ksettings *cmd) +{ + __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); + u8 autoneg = cmd->base.autoneg; + u8 duplex = cmd->base.duplex; + u32 speed = cmd->base.speed; + + if (cmd->base.phy_address != phydev->mdio.addr) + return -EINVAL; + + linkmode_copy(advertising, cmd->link_modes.advertising); + + /* We make sure that we don't pass unsupported values in to the PHY */ + linkmode_and(advertising, advertising, phydev->supported); + + /* Verify the settings we care about. */ + if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) + return -EINVAL; + + if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) + return -EINVAL; + + if (autoneg == AUTONEG_DISABLE && + ((speed != SPEED_1000 && + speed != SPEED_100 && + speed != SPEED_10) || + (duplex != DUPLEX_HALF && + duplex != DUPLEX_FULL))) + return -EINVAL; + + phydev->autoneg = autoneg; + + if (autoneg == AUTONEG_DISABLE) { + phydev->speed = speed; + phydev->duplex = duplex; + } + + linkmode_copy(phydev->advertising, advertising); + + linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + phydev->advertising, autoneg == AUTONEG_ENABLE); + + phydev->master_slave_set = cmd->base.master_slave_cfg; + phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; + + /* Restart the PHY */ + phy_start_aneg(phydev); + + return 0; +} +EXPORT_SYMBOL(phy_ethtool_ksettings_set); + /** * phy_speed_down - set speed to lowest speed supported by both link partners * @phydev: the phy_device struct

2 years, 6 months

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FAILED: patch "[PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 64cd92d5e8180c2ded3fdea76862de6f596ae2c9 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:03 +0200 Subject: [PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg This allows it to make use of a helper which assume the PHY is already locked. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 8457b829667e..ee584fa8b76d 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -243,59 +243,6 @@ static void phy_sanitize_settings(struct phy_device *phydev) } } -int phy_ethtool_ksettings_set(struct phy_device *phydev, - const struct ethtool_link_ksettings *cmd) -{ - __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); - u8 autoneg = cmd->base.autoneg; - u8 duplex = cmd->base.duplex; - u32 speed = cmd->base.speed; - - if (cmd->base.phy_address != phydev->mdio.addr) - return -EINVAL; - - linkmode_copy(advertising, cmd->link_modes.advertising); - - /* We make sure that we don't pass unsupported values in to the PHY */ - linkmode_and(advertising, advertising, phydev->supported); - - /* Verify the settings we care about. */ - if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) - return -EINVAL; - - if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) - return -EINVAL; - - if (autoneg == AUTONEG_DISABLE && - ((speed != SPEED_1000 && - speed != SPEED_100 && - speed != SPEED_10) || - (duplex != DUPLEX_HALF && - duplex != DUPLEX_FULL))) - return -EINVAL; - - phydev->autoneg = autoneg; - - if (autoneg == AUTONEG_DISABLE) { - phydev->speed = speed; - phydev->duplex = duplex; - } - - linkmode_copy(phydev->advertising, advertising); - - linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, - phydev->advertising, autoneg == AUTONEG_ENABLE); - - phydev->master_slave_set = cmd->base.master_slave_cfg; - phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; - - /* Restart the PHY */ - phy_start_aneg(phydev); - - return 0; -} -EXPORT_SYMBOL(phy_ethtool_ksettings_set); - void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { @@ -802,6 +749,59 @@ static int phy_poll_aneg_done(struct phy_device *phydev) return ret < 0 ? ret : 0; } +int phy_ethtool_ksettings_set(struct phy_device *phydev, + const struct ethtool_link_ksettings *cmd) +{ + __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); + u8 autoneg = cmd->base.autoneg; + u8 duplex = cmd->base.duplex; + u32 speed = cmd->base.speed; + + if (cmd->base.phy_address != phydev->mdio.addr) + return -EINVAL; + + linkmode_copy(advertising, cmd->link_modes.advertising); + + /* We make sure that we don't pass unsupported values in to the PHY */ + linkmode_and(advertising, advertising, phydev->supported); + + /* Verify the settings we care about. */ + if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) + return -EINVAL; + + if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) + return -EINVAL; + + if (autoneg == AUTONEG_DISABLE && + ((speed != SPEED_1000 && + speed != SPEED_100 && + speed != SPEED_10) || + (duplex != DUPLEX_HALF && + duplex != DUPLEX_FULL))) + return -EINVAL; + + phydev->autoneg = autoneg; + + if (autoneg == AUTONEG_DISABLE) { + phydev->speed = speed; + phydev->duplex = duplex; + } + + linkmode_copy(phydev->advertising, advertising); + + linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + phydev->advertising, autoneg == AUTONEG_ENABLE); + + phydev->master_slave_set = cmd->base.master_slave_cfg; + phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; + + /* Restart the PHY */ + phy_start_aneg(phydev); + + return 0; +} +EXPORT_SYMBOL(phy_ethtool_ksettings_set); + /** * phy_speed_down - set speed to lowest speed supported by both link partners * @phydev: the phy_device struct

2 years, 6 months

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FAILED: patch "[PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 64cd92d5e8180c2ded3fdea76862de6f596ae2c9 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:03 +0200 Subject: [PATCH] phy: phy_ethtool_ksettings_set: Move after phy_start_aneg This allows it to make use of a helper which assume the PHY is already locked. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 8457b829667e..ee584fa8b76d 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -243,59 +243,6 @@ static void phy_sanitize_settings(struct phy_device *phydev) } } -int phy_ethtool_ksettings_set(struct phy_device *phydev, - const struct ethtool_link_ksettings *cmd) -{ - __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); - u8 autoneg = cmd->base.autoneg; - u8 duplex = cmd->base.duplex; - u32 speed = cmd->base.speed; - - if (cmd->base.phy_address != phydev->mdio.addr) - return -EINVAL; - - linkmode_copy(advertising, cmd->link_modes.advertising); - - /* We make sure that we don't pass unsupported values in to the PHY */ - linkmode_and(advertising, advertising, phydev->supported); - - /* Verify the settings we care about. */ - if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) - return -EINVAL; - - if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) - return -EINVAL; - - if (autoneg == AUTONEG_DISABLE && - ((speed != SPEED_1000 && - speed != SPEED_100 && - speed != SPEED_10) || - (duplex != DUPLEX_HALF && - duplex != DUPLEX_FULL))) - return -EINVAL; - - phydev->autoneg = autoneg; - - if (autoneg == AUTONEG_DISABLE) { - phydev->speed = speed; - phydev->duplex = duplex; - } - - linkmode_copy(phydev->advertising, advertising); - - linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, - phydev->advertising, autoneg == AUTONEG_ENABLE); - - phydev->master_slave_set = cmd->base.master_slave_cfg; - phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; - - /* Restart the PHY */ - phy_start_aneg(phydev); - - return 0; -} -EXPORT_SYMBOL(phy_ethtool_ksettings_set); - void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { @@ -802,6 +749,59 @@ static int phy_poll_aneg_done(struct phy_device *phydev) return ret < 0 ? ret : 0; } +int phy_ethtool_ksettings_set(struct phy_device *phydev, + const struct ethtool_link_ksettings *cmd) +{ + __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); + u8 autoneg = cmd->base.autoneg; + u8 duplex = cmd->base.duplex; + u32 speed = cmd->base.speed; + + if (cmd->base.phy_address != phydev->mdio.addr) + return -EINVAL; + + linkmode_copy(advertising, cmd->link_modes.advertising); + + /* We make sure that we don't pass unsupported values in to the PHY */ + linkmode_and(advertising, advertising, phydev->supported); + + /* Verify the settings we care about. */ + if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) + return -EINVAL; + + if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) + return -EINVAL; + + if (autoneg == AUTONEG_DISABLE && + ((speed != SPEED_1000 && + speed != SPEED_100 && + speed != SPEED_10) || + (duplex != DUPLEX_HALF && + duplex != DUPLEX_FULL))) + return -EINVAL; + + phydev->autoneg = autoneg; + + if (autoneg == AUTONEG_DISABLE) { + phydev->speed = speed; + phydev->duplex = duplex; + } + + linkmode_copy(phydev->advertising, advertising); + + linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + phydev->advertising, autoneg == AUTONEG_ENABLE); + + phydev->master_slave_set = cmd->base.master_slave_cfg; + phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; + + /* Restart the PHY */ + phy_start_aneg(phydev); + + return 0; +} +EXPORT_SYMBOL(phy_ethtool_ksettings_set); + /** * phy_speed_down - set speed to lowest speed supported by both link partners * @phydev: the phy_device struct

2 years, 6 months

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FAILED: patch "[PATCH] phy: phy_ethtool_ksettings_get: Lock the phy for consistency" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From c10a485c3de5ccbf1fff65a382cebcb2730c6b06 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:02 +0200 Subject: [PATCH] phy: phy_ethtool_ksettings_get: Lock the phy for consistency The PHY structure should be locked while copying information out if it, otherwise there is no guarantee of self consistency. Without the lock the PHY state machine could be updating the structure. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index f124a8a58bd4..8457b829667e 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -299,6 +299,7 @@ EXPORT_SYMBOL(phy_ethtool_ksettings_set); void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { + mutex_lock(&phydev->lock); linkmode_copy(cmd->link_modes.supported, phydev->supported); linkmode_copy(cmd->link_modes.advertising, phydev->advertising); linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising); @@ -317,6 +318,7 @@ void phy_ethtool_ksettings_get(struct phy_device *phydev, cmd->base.autoneg = phydev->autoneg; cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; cmd->base.eth_tp_mdix = phydev->mdix; + mutex_unlock(&phydev->lock); } EXPORT_SYMBOL(phy_ethtool_ksettings_get);

2 years, 6 months

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FAILED: patch "[PATCH] phy: phy_ethtool_ksettings_get: Lock the phy for consistency" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From c10a485c3de5ccbf1fff65a382cebcb2730c6b06 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:02 +0200 Subject: [PATCH] phy: phy_ethtool_ksettings_get: Lock the phy for consistency The PHY structure should be locked while copying information out if it, otherwise there is no guarantee of self consistency. Without the lock the PHY state machine could be updating the structure. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index f124a8a58bd4..8457b829667e 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -299,6 +299,7 @@ EXPORT_SYMBOL(phy_ethtool_ksettings_set); void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { + mutex_lock(&phydev->lock); linkmode_copy(cmd->link_modes.supported, phydev->supported); linkmode_copy(cmd->link_modes.advertising, phydev->advertising); linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising); @@ -317,6 +318,7 @@ void phy_ethtool_ksettings_get(struct phy_device *phydev, cmd->base.autoneg = phydev->autoneg; cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; cmd->base.eth_tp_mdix = phydev->mdix; + mutex_unlock(&phydev->lock); } EXPORT_SYMBOL(phy_ethtool_ksettings_get);

2 years, 6 months

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FAILED: patch "[PATCH] phy: phy_ethtool_ksettings_get: Lock the phy for consistency" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From c10a485c3de5ccbf1fff65a382cebcb2730c6b06 Mon Sep 17 00:00:00 2001 From: Andrew Lunn <andrew(a)lunn.ch> Date: Sun, 24 Oct 2021 21:48:02 +0200 Subject: [PATCH] phy: phy_ethtool_ksettings_get: Lock the phy for consistency The PHY structure should be locked while copying information out if it, otherwise there is no guarantee of self consistency. Without the lock the PHY state machine could be updating the structure. Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index f124a8a58bd4..8457b829667e 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -299,6 +299,7 @@ EXPORT_SYMBOL(phy_ethtool_ksettings_set); void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { + mutex_lock(&phydev->lock); linkmode_copy(cmd->link_modes.supported, phydev->supported); linkmode_copy(cmd->link_modes.advertising, phydev->advertising); linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising); @@ -317,6 +318,7 @@ void phy_ethtool_ksettings_get(struct phy_device *phydev, cmd->base.autoneg = phydev->autoneg; cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; cmd->base.eth_tp_mdix = phydev->mdix; + mutex_unlock(&phydev->lock); } EXPORT_SYMBOL(phy_ethtool_ksettings_get);

2 years, 6 months

1
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FAILED: patch "[PATCH] net: ethernet: microchip: lan743x: Fix skb allocation failure" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e8684db191e4164f3f5f3ad7dec04a6734c25f1c Mon Sep 17 00:00:00 2001 From: Yuiko Oshino <yuiko.oshino(a)microchip.com> Date: Wed, 27 Oct 2021 14:23:02 -0400 Subject: [PATCH] net: ethernet: microchip: lan743x: Fix skb allocation failure The driver allocates skb during ndo_open with GFP_ATOMIC which has high chance of failure when there are multiple instances. GFP_KERNEL is enough while open and use GFP_ATOMIC only from interrupt context. Fixes: 23f0703c125b ("lan743x: Add main source files for new lan743x driver") Signed-off-by: Yuiko Oshino <yuiko.oshino(a)microchip.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index c4f32c7e0db1..4d5a5d6595b3 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -1944,7 +1944,8 @@ static void lan743x_rx_update_tail(struct lan743x_rx *rx, int index) index); } -static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index) +static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index, + gfp_t gfp) { struct net_device *netdev = rx->adapter->netdev; struct device *dev = &rx->adapter->pdev->dev; @@ -1958,7 +1959,7 @@ static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index) descriptor = &rx->ring_cpu_ptr[index]; buffer_info = &rx->buffer_info[index]; - skb = __netdev_alloc_skb(netdev, buffer_length, GFP_ATOMIC | GFP_DMA); + skb = __netdev_alloc_skb(netdev, buffer_length, gfp); if (!skb) return -ENOMEM; dma_ptr = dma_map_single(dev, skb->data, buffer_length, DMA_FROM_DEVICE); @@ -2120,7 +2121,8 @@ static int lan743x_rx_process_buffer(struct lan743x_rx *rx) /* save existing skb, allocate new skb and map to dma */ skb = buffer_info->skb; - if (lan743x_rx_init_ring_element(rx, rx->last_head)) { + if (lan743x_rx_init_ring_element(rx, rx->last_head, + GFP_ATOMIC | GFP_DMA)) { /* failed to allocate next skb. * Memory is very low. * Drop this packet and reuse buffer. @@ -2335,13 +2337,16 @@ static int lan743x_rx_ring_init(struct lan743x_rx *rx) rx->last_head = 0; for (index = 0; index < rx->ring_size; index++) { - ret = lan743x_rx_init_ring_element(rx, index); + ret = lan743x_rx_init_ring_element(rx, index, GFP_KERNEL); if (ret) goto cleanup; } return 0; cleanup: + netif_warn(rx->adapter, ifup, rx->adapter->netdev, + "Error allocating memory for LAN743x\n"); + lan743x_rx_ring_cleanup(rx); return ret; }

2 years, 6 months

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FAILED: patch "[PATCH] net: ethernet: microchip: lan743x: Fix skb allocation failure" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e8684db191e4164f3f5f3ad7dec04a6734c25f1c Mon Sep 17 00:00:00 2001 From: Yuiko Oshino <yuiko.oshino(a)microchip.com> Date: Wed, 27 Oct 2021 14:23:02 -0400 Subject: [PATCH] net: ethernet: microchip: lan743x: Fix skb allocation failure The driver allocates skb during ndo_open with GFP_ATOMIC which has high chance of failure when there are multiple instances. GFP_KERNEL is enough while open and use GFP_ATOMIC only from interrupt context. Fixes: 23f0703c125b ("lan743x: Add main source files for new lan743x driver") Signed-off-by: Yuiko Oshino <yuiko.oshino(a)microchip.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index c4f32c7e0db1..4d5a5d6595b3 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -1944,7 +1944,8 @@ static void lan743x_rx_update_tail(struct lan743x_rx *rx, int index) index); } -static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index) +static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index, + gfp_t gfp) { struct net_device *netdev = rx->adapter->netdev; struct device *dev = &rx->adapter->pdev->dev; @@ -1958,7 +1959,7 @@ static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index) descriptor = &rx->ring_cpu_ptr[index]; buffer_info = &rx->buffer_info[index]; - skb = __netdev_alloc_skb(netdev, buffer_length, GFP_ATOMIC | GFP_DMA); + skb = __netdev_alloc_skb(netdev, buffer_length, gfp); if (!skb) return -ENOMEM; dma_ptr = dma_map_single(dev, skb->data, buffer_length, DMA_FROM_DEVICE); @@ -2120,7 +2121,8 @@ static int lan743x_rx_process_buffer(struct lan743x_rx *rx) /* save existing skb, allocate new skb and map to dma */ skb = buffer_info->skb; - if (lan743x_rx_init_ring_element(rx, rx->last_head)) { + if (lan743x_rx_init_ring_element(rx, rx->last_head, + GFP_ATOMIC | GFP_DMA)) { /* failed to allocate next skb. * Memory is very low. * Drop this packet and reuse buffer. @@ -2335,13 +2337,16 @@ static int lan743x_rx_ring_init(struct lan743x_rx *rx) rx->last_head = 0; for (index = 0; index < rx->ring_size; index++) { - ret = lan743x_rx_init_ring_element(rx, index); + ret = lan743x_rx_init_ring_element(rx, index, GFP_KERNEL); if (ret) goto cleanup; } return 0; cleanup: + netif_warn(rx->adapter, ifup, rx->adapter->netdev, + "Error allocating memory for LAN743x\n"); + lan743x_rx_ring_cleanup(rx); return ret; }

2 years, 6 months

1
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0 0

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