From: Andrew Lunn <andrew@lunn.ch>
To: John David Anglin <dave.anglin@bell.net>
Cc: Russell King <linux@arm.linux.org.uk>,
Vivien Didelot <vivien.didelot@savoirfairelinux.com>,
Florian Fainelli <f.fainelli@gmail.com>,
netdev@vger.kernel.org
Subject: Re: [PATCH] net: phylink: dsa: mv88e6xxx: Revise irq setup ordering
Date: Mon, 4 Feb 2019 23:47:28 +0100 [thread overview]
Message-ID: <20190204224728.GF3397@lunn.ch> (raw)
In-Reply-To: <c536ef45-0d5a-5d7e-d9f2-4ff030a34eb9@bell.net>
On Mon, Feb 04, 2019 at 04:38:53PM -0500, John David Anglin wrote:
> On 2019-02-04 3:19 p.m., Andrew Lunn wrote:
> > The IRQ core would do this if it was needed.
> >
> > How many other irq thread work functions can you point to which do
> > something similar?
> This is comment for handle_edge_irq:
>
> /**
> * handle_edge_irq - edge type IRQ handler
> * @desc: the interrupt description structure for this irq
> *
> * Interrupt occures on the falling and/or rising edge of a hardware
> * signal. The occurrence is latched into the irq controller hardware
> * and must be acked in order to be reenabled. After the ack another
> * interrupt can happen on the same source even before the first one
> * is handled by the associated event handler. If this happens it
> * might be necessary to disable (mask) the interrupt depending on the
> * controller hardware. This requires to reenable the interrupt inside
> * of the loop which handles the interrupts which have arrived while
> * the handler was running. If all pending interrupts are handled, the
> * loop is left.
> */
>
> As can be seen, the above comment suggests that it may be necessary to
> disable (mask) interrupt
> as I proposed.
Hi Dave
This comment is describing what handle_edge_irq() actually does. Read
the code. It does not say anything about that the handling thread
function should do.
Andrew
next prev parent reply other threads:[~2019-02-04 22:47 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-22 19:16 net: phylink: dsa: mv88e6xxx: flaky link detection on switch ports with internal PHYs John David Anglin
2019-01-22 20:28 ` Andrew Lunn
2019-01-22 21:40 ` John David Anglin
2019-01-22 22:36 ` Andrew Lunn
2019-01-22 23:52 ` John David Anglin
2019-01-23 0:11 ` John David Anglin
2019-01-23 0:22 ` Andrew Lunn
2019-01-25 16:30 ` John David Anglin
2019-01-25 16:48 ` Russell King - ARM Linux admin
2019-01-25 18:38 ` John David Anglin
2019-01-30 17:08 ` John David Anglin
2019-01-30 17:28 ` Andrew Lunn
2019-01-30 19:01 ` John David Anglin
2019-01-30 19:09 ` Andrew Lunn
2019-01-30 22:24 ` John David Anglin
2019-01-30 22:38 ` Andrew Lunn
2019-01-31 1:27 ` John David Anglin
2019-01-31 17:27 ` John David Anglin
2019-02-04 18:37 ` [PATCH] net: phylink: dsa: mv88e6xxx: Revise irq setup ordering John David Anglin
2019-02-04 19:35 ` Andrew Lunn
2019-02-04 19:52 ` John David Anglin
2019-02-04 20:19 ` Andrew Lunn
2019-02-04 21:38 ` John David Anglin
2019-02-04 22:47 ` Andrew Lunn [this message]
2019-02-04 21:59 ` [PATCH v2] net: " John David Anglin
2019-02-04 23:14 ` Andrew Lunn
2019-02-05 0:38 ` John David Anglin
2019-02-05 2:21 ` Andrew Lunn
2019-02-05 19:20 ` John David Anglin
2019-02-05 19:54 ` Andrew Lunn
2019-02-05 18:37 ` David Miller
2019-02-11 18:40 ` [PATCH net] dsa: mv88e6xxx: Ensure all pending interrupts are handled prior to exit John David Anglin
2019-02-11 23:33 ` Andrew Lunn
2019-02-12 0:57 ` John David Anglin
2019-02-12 1:21 ` Andrew Lunn
2019-02-12 3:58 ` Andrew Lunn
2019-02-12 6:51 ` Heiner Kallweit
2019-02-12 12:56 ` Andrew Lunn
2019-02-12 18:42 ` Heiner Kallweit
2019-02-12 20:09 ` John David Anglin
2019-02-12 16:30 ` Russell King - ARM Linux admin
2019-02-12 20:11 ` Heiner Kallweit
2019-02-12 20:54 ` Heiner Kallweit
2019-02-12 22:55 ` Russell King - ARM Linux admin
2019-02-14 2:07 ` Andrew Lunn
2019-02-14 4:47 ` David Miller
2019-02-14 4:50 ` Andrew Lunn
2019-02-14 15:27 ` David Miller
2019-01-22 23:12 ` net: phylink: dsa: mv88e6xxx: flaky link detection on switch ports with internal PHYs Andrew Lunn
2019-01-22 23:48 ` John David Anglin
2019-01-23 0:00 ` John David Anglin
2019-01-23 0:04 ` Florian Fainelli
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