From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Linus Torvalds <torvalds@linuxfoundation.org>,
Paul McKenney <paulmck@kernel.org>,
Matthew Wilcox <willy@infradead.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
netdev@vger.kernel.org, Christian Benvenuti <benve@cisco.com>,
Govindarajulu Varadarajan <_govind@gmx.com>,
Dave Miller <davem@davemloft.net>,
Jonathan Corbet <corbet@lwn.net>,
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Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
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Luca Coelho <luciano.coelho@intel.com>,
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Jouni Malinen <j@w1.fi>, Amitkumar Karwar <amitkarwar@gmail.com>,
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Xinming Hu <huxinming820@gmail.com>,
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Pascal Terjan <pterjan@google.com>,
Ping-Ke Shih <pkshih@realtek.com>
Subject: [patch 09/35] net: fec_mpc52xx: Replace in_interrupt() usage
Date: Sun, 27 Sep 2020 21:48:55 +0200 [thread overview]
Message-ID: <20200927194920.730139599@linutronix.de> (raw)
In-Reply-To: 20200927194846.045411263@linutronix.de
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be seperated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
mpc52xx_fec_stop() uses in_interrupt() to check if it is safe to sleep. All
callers run in well defined contexts.
Pass an argument from the callers indicating whether it is safe to sleep.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
---
drivers/net/ethernet/freescale/fec_mpc52xx.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/freescale/fec_mpc52xx.c
+++ b/drivers/net/ethernet/freescale/fec_mpc52xx.c
@@ -74,7 +74,7 @@ struct mpc52xx_fec_priv {
static irqreturn_t mpc52xx_fec_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *);
-static void mpc52xx_fec_stop(struct net_device *dev);
+static void mpc52xx_fec_stop(struct net_device *dev, bool may_sleep);
static void mpc52xx_fec_start(struct net_device *dev);
static void mpc52xx_fec_reset(struct net_device *dev);
@@ -283,7 +283,7 @@ static int mpc52xx_fec_close(struct net_
netif_stop_queue(dev);
- mpc52xx_fec_stop(dev);
+ mpc52xx_fec_stop(dev, true);
mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
@@ -693,7 +693,7 @@ static void mpc52xx_fec_start(struct net
*
* stop all activity on fec and empty dma buffers
*/
-static void mpc52xx_fec_stop(struct net_device *dev)
+static void mpc52xx_fec_stop(struct net_device *dev, bool may_sleep)
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
struct mpc52xx_fec __iomem *fec = priv->fec;
@@ -706,7 +706,7 @@ static void mpc52xx_fec_stop(struct net_
bcom_disable(priv->rx_dmatsk);
/* Wait for tx queue to drain, but only if we're in process context */
- if (!in_interrupt()) {
+ if (may_sleep) {
timeout = jiffies + msecs_to_jiffies(2000);
while (time_before(jiffies, timeout) &&
!bcom_queue_empty(priv->tx_dmatsk))
@@ -738,7 +738,7 @@ static void mpc52xx_fec_reset(struct net
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
struct mpc52xx_fec __iomem *fec = priv->fec;
- mpc52xx_fec_stop(dev);
+ mpc52xx_fec_stop(dev, false);
out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status));
out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO);
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [patch 09/35] net: fec_mpc52xx: Replace in_interrupt() usage
Date: Sun, 27 Sep 2020 21:48:55 +0200 [thread overview]
Message-ID: <20200927194920.730139599@linutronix.de> (raw)
In-Reply-To: 20200927194846.045411263@linutronix.de
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be seperated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
mpc52xx_fec_stop() uses in_interrupt() to check if it is safe to sleep. All
callers run in well defined contexts.
Pass an argument from the callers indicating whether it is safe to sleep.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev at vger.kernel.org
---
drivers/net/ethernet/freescale/fec_mpc52xx.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/freescale/fec_mpc52xx.c
+++ b/drivers/net/ethernet/freescale/fec_mpc52xx.c
@@ -74,7 +74,7 @@ struct mpc52xx_fec_priv {
static irqreturn_t mpc52xx_fec_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *);
-static void mpc52xx_fec_stop(struct net_device *dev);
+static void mpc52xx_fec_stop(struct net_device *dev, bool may_sleep);
static void mpc52xx_fec_start(struct net_device *dev);
static void mpc52xx_fec_reset(struct net_device *dev);
@@ -283,7 +283,7 @@ static int mpc52xx_fec_close(struct net_
netif_stop_queue(dev);
- mpc52xx_fec_stop(dev);
+ mpc52xx_fec_stop(dev, true);
mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
@@ -693,7 +693,7 @@ static void mpc52xx_fec_start(struct net
*
* stop all activity on fec and empty dma buffers
*/
-static void mpc52xx_fec_stop(struct net_device *dev)
+static void mpc52xx_fec_stop(struct net_device *dev, bool may_sleep)
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
struct mpc52xx_fec __iomem *fec = priv->fec;
@@ -706,7 +706,7 @@ static void mpc52xx_fec_stop(struct net_
bcom_disable(priv->rx_dmatsk);
/* Wait for tx queue to drain, but only if we're in process context */
- if (!in_interrupt()) {
+ if (may_sleep) {
timeout = jiffies + msecs_to_jiffies(2000);
while (time_before(jiffies, timeout) &&
!bcom_queue_empty(priv->tx_dmatsk))
@@ -738,7 +738,7 @@ static void mpc52xx_fec_reset(struct net
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
struct mpc52xx_fec __iomem *fec = priv->fec;
- mpc52xx_fec_stop(dev);
+ mpc52xx_fec_stop(dev, false);
out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status));
out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO);
next prev parent reply other threads:[~2020-09-27 19:57 UTC|newest]
Thread overview: 115+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-27 19:48 [patch 00/35] net: in_interrupt() cleanup and fixes Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 01/35] net: enic: Cure the enic api locking trainwreck Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 22:06 ` kernel test robot
2020-09-27 19:48 ` [patch 02/35] net: caif: Remove unused caif SPI driver Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 03/35] net: Add netif_rx_any_context() Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 04/35] net: caif: Use netif_rx_any_context() Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 05/35] net: atheros: Remove WARN_ON(in_interrupt()) Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 06/35] net: cxgb3: Cleanup in_interrupt() usage Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 07/35] net: cxbg4: Remove pointless in_interrupt() check Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 08/35] net: e100: Remove in_interrupt() usage and pointless GFP_ATOMIC allocation Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` Thomas Gleixner [this message]
2020-09-27 19:48 ` [Intel-wired-lan] [patch 09/35] net: fec_mpc52xx: Replace in_interrupt() usage Thomas Gleixner
2020-09-27 19:48 ` [patch 10/35] net: intel: Remove in_interrupt() warnings Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 23:04 ` Alexander Duyck
2020-09-28 23:04 ` [Intel-wired-lan] " Alexander Duyck
2020-09-27 19:48 ` [patch 11/35] net: ionic: Replace in_interrupt() usage Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 17:24 ` Shannon Nelson
2020-09-28 17:24 ` [Intel-wired-lan] " Shannon Nelson
2020-09-28 19:51 ` Shannon Nelson
2020-09-28 19:51 ` [Intel-wired-lan] " Shannon Nelson
2020-09-29 14:37 ` Thomas Gleixner
2020-09-29 14:37 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:48 ` [patch 12/35] net: ionic: Remove WARN_ON(in_interrupt()) Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 17:26 ` Shannon Nelson
2020-09-28 17:26 ` [Intel-wired-lan] " Shannon Nelson
2020-09-27 19:48 ` [patch 13/35] net: mdiobus: Remove WARN_ON_ONCE(in_interrupt()) Thomas Gleixner
2020-09-27 19:48 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 23:00 ` Andrew Lunn
2020-09-27 23:00 ` [Intel-wired-lan] " Andrew Lunn
2020-09-27 19:49 ` [patch 14/35] net: natsemi: Replace in_interrupt() usage Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 15/35] net: sfc: " Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 19:03 ` Edward Cree
2020-09-28 19:03 ` [Intel-wired-lan] " Edward Cree
2020-09-28 20:05 ` [RFC PATCH net-next] sfc: replace " Edward Cree
2020-09-28 20:24 ` Thomas Gleixner
2020-09-29 15:15 ` Edward Cree
2020-09-29 19:27 ` Thomas Gleixner
2020-09-29 9:39 ` Martin Habets
2020-09-27 19:49 ` [patch 16/35] net: sunbmac: Replace " Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 17/35] net: sun3lance: Remove redundant checks in interrupt handler Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 18/35] net: vxge: Remove in_interrupt() conditionals Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 19/35] net: zd1211rw: Remove ZD_ASSERT(in_interrupt()) Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 20/35] net: usb: kaweth: Replace kaweth_control() with usb_control_msg() Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 21/35] net: usb: kaweth: Remove last user of kaweth_control() Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 6:50 ` Greg Kroah-Hartman
2020-09-28 6:50 ` [Intel-wired-lan] " Greg Kroah-Hartman
2020-09-27 19:49 ` [patch 22/35] net: usb: net1080: Remove in_interrupt() comment Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 23/35] net: wan/lmc: Remove lmc_trace() Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 24/35] net: brcmfmac: Replace in_interrupt() Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 7:35 ` Arend Van Spriel
2020-09-28 7:35 ` [Intel-wired-lan] " Arend Van Spriel
2020-09-28 9:19 ` Ulf Hansson
2020-09-28 9:19 ` [Intel-wired-lan] " Ulf Hansson
2020-09-28 9:37 ` Arend Van Spriel
2020-09-28 9:37 ` [Intel-wired-lan] " Arend Van Spriel
2020-09-28 9:40 ` Arend Van Spriel
2020-09-28 9:40 ` [Intel-wired-lan] " Arend Van Spriel
2020-09-27 19:49 ` [patch 25/35] net: brcmfmac: Use netif_rx_any_context() Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 8:03 ` Arend Van Spriel
2020-09-28 8:03 ` [Intel-wired-lan] " Arend Van Spriel
2020-09-27 19:49 ` [patch 26/35] net: brcmfmac: Convey allocation mode as argument Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 9:34 ` Arend Van Spriel
2020-09-28 9:34 ` [Intel-wired-lan] " Arend Van Spriel
2020-09-27 19:49 ` [patch 27/35] net: ipw2x00,iwlegacy,iwlwifi: Remove in_interrupt() from debug macros Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] [patch 27/35] net: ipw2x00, iwlegacy, iwlwifi: " Thomas Gleixner
2020-09-27 19:49 ` [patch 28/35] net: iwlwifi: Remove in_interrupt() from tracing macro Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-28 6:13 ` Coelho, Luciano
2020-09-28 6:13 ` [Intel-wired-lan] " Coelho, Luciano
2020-09-27 19:49 ` [patch 29/35] net: hostap: Remove in_interrupt() usage Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 30/35] net: mwifiex: Use netif_rx_any_context() Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 31/35] net: libertas libertas_tf: Remove in_interrupt() from debug macro Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 32/35] net: libertas: Use netif_rx_any_context() Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 33/35] net: rtlwifi: Remove void* casts related to delayed work Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 34/35] net: rtlwifi: Remove in_interrupt() from debug macro Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 19:49 ` [patch 35/35] net: rtlwifi: Replace in_interrupt() for context detection Thomas Gleixner
2020-09-27 19:49 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-27 20:22 ` [patch 00/35] net: in_interrupt() cleanup and fixes Joe Perches
2020-09-27 20:22 ` [Intel-wired-lan] " Joe Perches
2020-09-27 20:57 ` David Miller
2020-09-27 20:57 ` [Intel-wired-lan] " David Miller
2020-09-28 10:25 ` Thomas Gleixner
2020-09-28 10:25 ` [Intel-wired-lan] " Thomas Gleixner
2020-09-29 8:01 ` Kalle Valo
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