From: Florian Fainelli <f.fainelli@gmail.com>
To: Heiner Kallweit <hkallweit1@gmail.com>, Andrew Lunn <andrew@lunn.ch>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
David Miller <davem@davemloft.net>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"maintainer:BROADCOM BCM63XX ARM ARCHITECTURE"
<bcm-kernel-feedback-list@broadcom.com>,
Richard Cochran <richardcochran@gmail.com>,
Carlo Caione <carlo@caione.org>,
Kevin Hilman <khilman@baylibre.com>,
open list <linux-kernel@vger.kernel.org>,
"moderated list:BROADCOM BCM63XX ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>,
"open list:ARM/Amlogic Meson SoC support"
<linux-amlogic@lists.infradead.org>
Subject: Re: [PATCH net-next v3 1/2] net: phy: replace PHY_HAS_INTERRUPT with a check for config_intr and ack_interrupt
Date: Fri, 9 Nov 2018 12:33:28 -0800 [thread overview]
Message-ID: <4330cb5b-b1a5-5004-af51-39199943639d@gmail.com> (raw)
In-Reply-To: <44b503b8-9f2a-50ac-c4c9-d25258d98ef5@gmail.com>
On 11/9/18 12:22 PM, Heiner Kallweit wrote:
> On 09.11.2018 21:13, Andrew Lunn wrote:
>> Hi Heiner
>>
>>> +static bool phy_drv_supports_irq(struct phy_driver *phydrv)
>>> +{
>>> + return phydrv->config_intr || phydrv->ack_interrupt;
>>> +}
>>
>> Should this be && not || ? I thought both needed to be provided for
>> interrupts to work.
>>
>> Andrew
>>
> I've seen at least one driver which configures interrupts in
> config_init and doesn't define a config_intr callback
> (ack_interrupt callback is there)
That driver should probably be fixed, while it most likely does not make
any significant difference during probe/connect, since config_init() and
config_intr() are virtually happening at the same time, this is not
necessarily true when disconnecting from the PHY where we really want
config_intr() to effectively disable the interrupts and not leaving
something enabled that would now become unmaskable, because no more
driver attached.
> Intention of this check is not to ensure that the driver defines
> everything to make interrupts work. All it states:
> If at least one of the irq-related callbacks is defined, then
> we interpret this as indicator that the PHY supports interrupts.
I agree with Andrew here, that this should be an AND here, both
callbacks must be implemented for interrupts to work correctly.
--
Florian
next prev parent reply other threads:[~2018-11-09 20:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-09 17:15 [PATCH net-next v3 0/2] net: phy: replace PHY_HAS_INTERRUPT with a check for config_intr and ack_interrupt Heiner Kallweit
2018-11-09 17:16 ` [PATCH net-next v3 1/2] " Heiner Kallweit
2018-11-09 20:13 ` Andrew Lunn
2018-11-09 20:22 ` Heiner Kallweit
2018-11-09 20:33 ` Florian Fainelli [this message]
2018-11-09 20:56 ` Heiner Kallweit
2018-11-12 20:32 ` Martin Blumenstingl
2018-11-12 20:38 ` Heiner Kallweit
2018-11-12 21:53 ` Martin Blumenstingl
2018-11-09 20:38 ` Andrew Lunn
2018-11-09 17:17 ` [PATCH net-next v3 2/2] net: phy: remove flag PHY_HAS_INTERRUPT from driver configs Heiner Kallweit
2018-11-09 20:13 ` Andrew Lunn
2018-11-11 17:38 ` [PATCH net-next v3 0/2] net: phy: replace PHY_HAS_INTERRUPT with a check for config_intr and ack_interrupt David Miller
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