From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: "Jakub Kicinski" <kubakici@wp.pl>,
"Sean Nyekjær" <sean.nyekjaer@prevas.dk>
Cc: Josh Cartwright <joshc@ni.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-serial@vger.kernel.org, linux-rt-users@vger.kernel.org,
Jon Ringle <jringle@gridpoint.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] tty: serial: sc16is7xx: use threaded interrupts instead of homegrow
Date: Wed, 9 Mar 2016 13:04:16 +0100 [thread overview]
Message-ID: <56E01140.70407@linutronix.de> (raw)
In-Reply-To: <20160309111353.3530f35b@laptop>
On 03/09/2016 12:13 PM, Jakub Kicinski wrote:
>> I not entirely sure what i have to do...
>> - Reenable the ONE_SHOT
>> - Disable irq when running in the loop, and enable when returning?
>> - Implement threaded irq?
>>
>> /Sean
>
> Do not reenable ONE_SHOT. Disable interrupt (disable_irq_nosync())
> in sc16is7xx_irq() and reenable at the end of sc16is7xx_ist().
> I think reenabling at the end of sc16is7xx_ist() is fine since it's a
> level triggered IRQ.
Josh's patch [0] which drops the ONE_SHOT flag has not yet been taken
by Greg. It sits only in the -RT tree at the moment. It might have
something to do with Greg not being in TO: or CC:
*I* don't care how you fix this in the end but please do something
before the merge window opens.
An ack by the maintainer of the driver and re-send to Greg (the usual
way) would be one way.
[0] http://lkml.iu.edu/hypermail/linux/kernel/1602.2/02637.html
Sebastian
next prev parent reply other threads:[~2016-03-09 12:04 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <56CDCCE6.5020801@prevas.dk>
2016-02-24 17:39 ` sc16is7xx: a lot of time is spend in sc16is7xx_port_irq Sean Nyekjær
2016-02-24 17:39 ` Sean Nyekjær
2016-02-24 22:35 ` Josh Cartwright
2016-02-26 11:43 ` Sebastian Andrzej Siewior
2016-02-26 11:48 ` [PATCH] tty: serial: sc16is7xx: use threaded interrupts instead of homegrow Sebastian Andrzej Siewior
2016-02-26 14:34 ` Kuba Kicinski
2016-02-26 16:52 ` Josh Cartwright
2016-02-26 18:26 ` Kuba Kicinski
2016-02-26 19:00 ` Josh Cartwright
2016-03-07 16:41 ` Sebastian Andrzej Siewior
2016-03-07 16:58 ` Josh Cartwright
2016-03-07 17:22 ` Sean Nyekjær
2016-03-08 21:18 ` Jakub Kicinski
2016-03-09 7:03 ` Sean Nyekjær
2016-03-09 7:03 ` Sean Nyekjær
2016-03-09 11:13 ` Jakub Kicinski
2016-03-09 11:13 ` Jakub Kicinski
2016-03-09 12:04 ` Sebastian Andrzej Siewior [this message]
2016-03-09 14:06 Maarten Brock
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