From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
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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: Re: [patch 21/35] net: usb: kaweth: Remove last user of kaweth_control()
Date: Mon, 28 Sep 2020 08:50:11 +0200 [thread overview]
Message-ID: <20200928065011.GB381927@kroah.com> (raw)
In-Reply-To: <20200927194921.948595516@linutronix.de>
On Sun, Sep 27, 2020 at 09:49:07PM +0200, Thomas Gleixner wrote:
> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
>
> kaweth_async_set_rx_mode() invokes kaweth_contol() and has two callers:
>
> - kaweth_open() which is invoked from preemptible context
> .
> - kaweth_start_xmit() which holds a spinlock and has bottom halfs disabled.
>
> If called from kaweth_start_xmit() kaweth_async_set_rx_mode() obviously
> cannot block, which means it can't call kaweth_control(). This is detected
> with an in_interrupt() check.
>
> Replace the in_interrupt() check in kaweth_async_set_rx_mode() with an
> argument which is set true by the caller if the context is safe to sleep,
> otherwise false.
>
> Now kaweth_control() is only called from preemptible context which means
> there is no need for GFP_ATOMIC allocations anymore. Replace it with
> usb_control_msg(). Cleanup the code a bit while at it.
>
> Finally remove kaweth_control() since the last user is gone.
>
> 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: linux-usb@vger.kernel.org
> Cc: netdev@vger.kernel.org
Thanks for the cleanup, that driver really needed it!
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
next prev parent reply other threads:[~2020-09-28 6:50 UTC|newest]
Thread overview: 54+ 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 ` [patch 01/35] net: enic: Cure the enic api locking trainwreck Thomas Gleixner
2020-09-27 19:48 ` [patch 02/35] net: caif: Remove unused caif SPI driver Thomas Gleixner
2020-09-27 19:48 ` [patch 03/35] net: Add netif_rx_any_context() Thomas Gleixner
2020-09-27 19:48 ` [patch 04/35] net: caif: Use netif_rx_any_context() Thomas Gleixner
2020-09-27 19:48 ` [patch 05/35] net: atheros: Remove WARN_ON(in_interrupt()) Thomas Gleixner
2020-09-27 19:48 ` [patch 06/35] net: cxgb3: Cleanup in_interrupt() usage Thomas Gleixner
2020-09-27 19:48 ` [patch 07/35] net: cxbg4: Remove pointless in_interrupt() check 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 ` [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
2020-09-28 23:04 ` Alexander Duyck
2020-09-27 19:48 ` [patch 11/35] net: ionic: Replace in_interrupt() usage Thomas Gleixner
2020-09-28 17:24 ` Shannon Nelson
2020-09-28 19:51 ` Shannon Nelson
2020-09-29 14:37 ` Thomas Gleixner
2020-09-27 19:48 ` [patch 12/35] net: ionic: Remove WARN_ON(in_interrupt()) Thomas Gleixner
2020-09-28 17:26 ` Shannon Nelson
2020-09-27 19:48 ` [patch 13/35] net: mdiobus: Remove WARN_ON_ONCE(in_interrupt()) Thomas Gleixner
2020-09-27 23:00 ` Andrew Lunn
2020-09-27 19:49 ` [patch 14/35] net: natsemi: Replace in_interrupt() usage Thomas Gleixner
2020-09-27 19:49 ` [patch 15/35] net: sfc: " Thomas Gleixner
2020-09-28 19:03 ` Edward Cree
2020-09-27 19:49 ` [patch 16/35] net: sunbmac: " 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 ` [patch 18/35] net: vxge: Remove in_interrupt() conditionals Thomas Gleixner
2020-09-27 19:49 ` [patch 19/35] net: zd1211rw: Remove ZD_ASSERT(in_interrupt()) 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 ` [patch 21/35] net: usb: kaweth: Remove last user of kaweth_control() Thomas Gleixner
2020-09-28 6:50 ` Greg Kroah-Hartman [this message]
2020-09-27 19:49 ` [patch 22/35] net: usb: net1080: Remove in_interrupt() comment Thomas Gleixner
2020-09-27 19:49 ` [patch 23/35] net: wan/lmc: Remove lmc_trace() Thomas Gleixner
2020-09-27 19:49 ` [patch 24/35] net: brcmfmac: Replace in_interrupt() Thomas Gleixner
2020-09-28 7:35 ` Arend Van Spriel
2020-09-28 9:19 ` Ulf Hansson
2020-09-28 9:37 ` Arend Van Spriel
2020-09-28 9:40 ` Arend Van Spriel
2020-09-27 19:49 ` [patch 25/35] net: brcmfmac: Use netif_rx_any_context() Thomas Gleixner
2020-09-28 8:03 ` Arend Van Spriel
2020-09-27 19:49 ` [patch 26/35] net: brcmfmac: Convey allocation mode as argument Thomas Gleixner
2020-09-28 9:34 ` 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 ` [patch 28/35] net: iwlwifi: Remove in_interrupt() from tracing macro Thomas Gleixner
2020-09-28 6:13 ` Coelho, Luciano
2020-09-27 19:49 ` [patch 29/35] net: hostap: Remove in_interrupt() usage Thomas Gleixner
2020-09-27 19:49 ` [patch 30/35] net: mwifiex: Use netif_rx_any_context() 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 ` [patch 32/35] net: libertas: Use netif_rx_any_context() 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 ` [patch 34/35] net: rtlwifi: Remove in_interrupt() from debug macro Thomas Gleixner
2020-09-27 19:49 ` [patch 35/35] net: rtlwifi: Replace in_interrupt() for context detection Thomas Gleixner
2020-09-27 20:22 ` [patch 00/35] net: in_interrupt() cleanup and fixes Joe Perches
2020-09-27 20:57 ` David Miller
2020-09-28 10:25 ` Thomas Gleixner
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