From: Felipe Balbi <balbi@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Sebastian Siewior <bigeasy@linutronix.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Joel Fernandes <joel@joelfernandes.org>,
Oleg Nesterov <oleg@redhat.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, Logan Gunthorpe <logang@deltatee.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Kurt Schwemmer <kurt.schwemmer@microsemi.com>,
linux-pci@vger.kernel.org, Kalle Valo <kvalo@codeaurora.org>,
"David S. Miller" <davem@davemloft.net>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
Darren Hart <dvhart@infradead.org>,
Andy Shevchenko <andy@infradead.org>,
platform-driver-x86@vger.kernel.org,
Zhang Rui <rui.zhang@intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
linux-pm@vger.kernel.org, Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org, kbuild test robot <lkp@intel.com>,
Nick Hu <nickhu@andestech.com>, Greentime Hu <green.hu@gmail.com>,
Vincent Chen <deanbo422@gmail.com>, Guo Ren <guoren@kernel.org>,
linux-csky@vger.kernel.org, Brian Cain <bcain@codeaurora.org>,
linux-hexagon@vger.kernel.org, Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
linux-ia64@vger.kernel.org, Michal Simek <monstr@monstr.eu>,
Michael Ellerman <mpe@ellerman.id.au>,
Arnd Bergmann <arnd@arndb.de>, Geoff Levand <geoff@infradead.org>,
linuxppc-dev@lists.ozlabs.org,
"Paul E . McKenney" <paulmck@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Randy Dunlap <rdunlap@infradead.org>,
Davidlohr Bueso <dbueso@suse.de>
Subject: Re: [patch V3 03/20] usb: gadget: Use completion interface instead of open coding it
Date: Wed, 25 Mar 2020 10:37:57 +0200 [thread overview]
Message-ID: <87blokde3e.fsf@kernel.org> (raw)
In-Reply-To: <20200321113241.043380271@linutronix.de>
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Thomas Gleixner <tglx@linutronix.de> writes:
> From: Thomas Gleixner <tglx@linutronix.de>
>
> ep_io() uses a completion on stack and open codes the waiting with:
>
> wait_event_interruptible (done.wait, done.done);
> and
> wait_event (done.wait, done.done);
>
> This waits in non-exclusive mode for complete(), but there is no reason to
> do so because the completion can only be waited for by the task itself and
> complete() wakes exactly one exlusive waiter.
>
> Replace the open coded implementation with the corresponding
> wait_for_completion*() functions.
>
> No functional change.
>
> Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Felipe Balbi <balbi@kernel.org>
> Cc: linux-usb@vger.kernel.org
Do you want to carry it via your tree? If so:
Acked-by: Felipe Balbi <balbi@kernel.org>
Otherwise, let me know and I'll pick this patch.
--
balbi
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next prev parent reply other threads:[~2020-03-25 8:38 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-21 11:25 [patch V3 00/20] Lock ordering documentation and annotation for lockdep Thomas Gleixner
2020-03-21 11:25 ` [patch V3 01/20] PCI/switchtec: Fix init_completion race condition with poll_wait() Thomas Gleixner
2020-03-21 11:25 ` [patch V3 02/20] pci/switchtec: Replace completion wait queue usage for poll Thomas Gleixner
2020-03-21 11:25 ` [patch V3 03/20] usb: gadget: Use completion interface instead of open coding it Thomas Gleixner
2020-03-25 8:37 ` Felipe Balbi [this message]
2020-03-27 12:14 ` Sebastian Siewior
2020-03-21 11:25 ` [patch V3 04/20] orinoco_usb: Use the regular completion interfaces Thomas Gleixner
2020-03-21 11:25 ` [patch V3 05/20] acpi: Remove header dependency Thomas Gleixner
2020-03-21 11:25 ` [patch V3 06/20] nds32: Remove mm.h from asm/uaccess.h Thomas Gleixner
2020-03-21 11:25 ` [patch V3 07/20] csky: " Thomas Gleixner
2020-03-21 11:25 ` [patch V3 08/20] hexagon: " Thomas Gleixner
2020-03-23 21:46 ` Brian Cain
2020-03-21 11:25 ` [patch V3 09/20] ia64: " Thomas Gleixner
2020-03-21 11:25 ` [patch V3 10/20] microblaze: " Thomas Gleixner
2020-03-21 11:25 ` [patch V3 11/20] rcuwait: Add @state argument to rcuwait_wait_event() Thomas Gleixner
2020-03-21 11:25 ` [patch V3 12/20] powerpc/ps3: Convert half completion to rcuwait Thomas Gleixner
2020-03-21 13:22 ` Thomas Gleixner
2020-03-27 19:14 ` Geoff Levand
2020-03-21 11:25 ` [patch V3 13/20] Documentation: Add lock ordering and nesting documentation Thomas Gleixner
2020-03-23 2:55 ` Paul E. McKenney
2020-03-24 23:13 ` Thomas Gleixner
2020-03-25 0:28 ` Paul E. McKenney
2020-03-25 12:27 ` Documentation/locking/locktypes: Further clarifications and wordsmithing Thomas Gleixner
2020-03-25 16:02 ` Sebastian Siewior
2020-03-25 16:39 ` Paul E. McKenney
2020-03-25 16:54 ` Sebastian Siewior
2020-03-25 16:58 ` [PATCH v2] Documentation/locking/locktypes: minor copy editor fixes Randy Dunlap
2020-03-26 2:40 ` Paul E. McKenney
2020-03-21 11:25 ` [patch V3 14/20] timekeeping: Split jiffies seqlock Thomas Gleixner
2020-03-21 11:25 ` [patch V3 15/20] sched/swait: Prepare usage in completions Thomas Gleixner
2020-03-21 11:26 ` [patch V3 16/20] completion: Use simple wait queues Thomas Gleixner
2020-03-23 15:20 ` [PATCH] completion: Use lockdep_assert_RT_in_threaded_ctx() in complete_all() Sebastian Siewior
2020-03-21 11:26 ` [patch V3 17/20] lockdep: Introduce wait-type checks Thomas Gleixner
2020-03-21 11:26 ` [patch V3 18/20] lockdep: Add hrtimer context tracing bits Thomas Gleixner
2020-03-21 11:26 ` [patch V3 19/20] lockdep: Annotate irq_work Thomas Gleixner
2020-03-21 11:26 ` [patch V3 20/20] lockdep: Add posixtimer context tracing bits Thomas Gleixner
2020-03-21 17:19 ` [patch V3 00/20] Lock ordering documentation and annotation for lockdep Davidlohr Bueso
2020-03-21 17:45 ` Thomas Gleixner
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