From: Peter Chen <peter.chen@nxp.com>
To: Felipe Balbi <balbi@kernel.org>,
Peter Chen <hzpeterchen@gmail.com>,
"pawell@cadence.com" <pawell@cadence.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"rogerq@ti.com" <rogerq@ti.com>,
lkml <linux-kernel@vger.kernel.org>,
"adouglas@cadence.com" <adouglas@cadence.com>,
"jbergsagel@ti.com" <jbergsagel@ti.com>,
"nsekhar@ti.com" <nsekhar@ti.com>, "nm@ti.com" <nm@ti.com>,
"sureshp@cadence.com" <sureshp@cadence.com>,
"pjez@cadence.com" <pjez@cadence.com>,
"kurahul@cadence.com" <kurahul@cadence.com>
Subject: RE: [PATCH v1 2/2] usb:cdns3 Add Cadence USB3 DRD Driver
Date: Wed, 12 Dec 2018 09:24:59 +0000 [thread overview]
Message-ID: <VI1PR04MB532701CEDE94C068759987688BA70@VI1PR04MB5327.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <871s6nm9db.fsf@linux.intel.com>
> >
> > Interrupt handler (hardirq context) at CPU0, and process at CPU1, eg
> > role switch, unload module, etc.
>
> the process at CPU1 would need to disable interrupts (spin_lock_irq() or
> spin_lock_irqsave()), not the hardirq on CPU0 as that already runs with interrrupts
> disabled.
>
> https://www.kernel.org/doc/html/latest/kernel-hacking/locking.html#table-of-
> minimum-requirements
>
I see, thanks.
Peter
WARNING: multiple messages have this Message-ID (diff)
From: Peter Chen <peter.chen@nxp.com>
To: Felipe Balbi <balbi@kernel.org>,
Peter Chen <hzpeterchen@gmail.com>,
"pawell@cadence.com" <pawell@cadence.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"rogerq@ti.com" <rogerq@ti.com>,
lkml <linux-kernel@vger.kernel.org>,
"adouglas@cadence.com" <adouglas@cadence.com>,
"jbergsagel@ti.com" <jbergsagel@ti.com>,
"nsekhar@ti.com" <nsekhar@ti.com>, "nm@ti.com" <nm@ti.com>,
"sureshp@cadence.com" <sureshp@cadence.com>,
"pjez@cadence.com" <pjez@cadence.com>,
"kurahul@cadence.com" <kurahul@cadence.com>
Subject: [v1,2/2] usb:cdns3 Add Cadence USB3 DRD Driver
Date: Wed, 12 Dec 2018 09:24:59 +0000 [thread overview]
Message-ID: <VI1PR04MB532701CEDE94C068759987688BA70@VI1PR04MB5327.eurprd04.prod.outlook.com> (raw)
> >
> > Interrupt handler (hardirq context) at CPU0, and process at CPU1, eg
> > role switch, unload module, etc.
>
> the process at CPU1 would need to disable interrupts (spin_lock_irq() or
> spin_lock_irqsave()), not the hardirq on CPU0 as that already runs with interrrupts
> disabled.
>
> https://www.kernel.org/doc/html/latest/kernel-hacking/locking.html#table-of-
> minimum-requirements
>
I see, thanks.
Peter
next prev parent reply other threads:[~2018-12-12 9:25 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 12:39 [PATCH v1 0/2] Introduced new Cadence USBSS DRD Driver Pawel Laszczak
2018-12-10 12:39 ` Pawel Laszczak
2018-12-10 12:39 ` [PATCH v1 1/2] dt-bindings: add binding for USBSS-DRD controller Pawel Laszczak
2018-12-10 12:39 ` [v1,1/2] " Pawel Laszczak
2018-12-10 12:39 ` [PATCH v1 1/2] " Pawel Laszczak
2018-12-11 10:16 ` Roger Quadros
2018-12-11 10:16 ` [v1,1/2] " Roger Quadros
2018-12-11 10:16 ` [PATCH v1 1/2] " Roger Quadros
2018-12-13 9:20 ` Peter Chen
2018-12-13 9:20 ` [v1,1/2] " Peter Chen
2018-12-13 9:25 ` [PATCH v1 1/2] " Pawel Laszczak
2018-12-13 9:25 ` [v1,1/2] " Pawel Laszczak
2018-12-20 20:01 ` [PATCH v1 1/2] " Rob Herring
2018-12-20 20:01 ` [v1,1/2] " Rob Herring
2018-12-22 22:24 ` [PATCH v1 1/2] " Pawel Laszczak
2018-12-22 22:24 ` [v1,1/2] " Pawel Laszczak
2018-12-27 21:01 ` [PATCH v1 1/2] " Rob Herring
2018-12-27 21:01 ` [v1,1/2] " Rob Herring
2018-12-31 5:35 ` [PATCH v1 1/2] " Pawel Laszczak
2018-12-31 5:35 ` [v1,1/2] " Pawel Laszczak
2018-12-10 12:39 ` [PATCH v1 2/2] usb:cdns3 Add Cadence USB3 DRD Driver Pawel Laszczak
2018-12-10 12:39 ` [v1,2/2] " Pawel Laszczak
2018-12-10 12:39 ` [PATCH v1 2/2] " Pawel Laszczak
2018-12-11 9:39 ` Roger Quadros
2018-12-11 9:39 ` [v1,2/2] " Roger Quadros
2018-12-11 9:39 ` [PATCH v1 2/2] " Roger Quadros
2018-12-11 10:01 ` Pawel Laszczak
2018-12-11 10:01 ` [v1,2/2] " Pawel Laszczak
2018-12-11 12:15 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-11 12:15 ` [v1,2/2] " Felipe Balbi
2018-12-11 12:15 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-11 11:46 ` Felipe Balbi
2018-12-11 11:46 ` [v1,2/2] " Felipe Balbi
2018-12-11 12:14 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-11 12:14 ` [v1,2/2] " Felipe Balbi
2018-12-11 12:14 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-11 19:04 ` Pawel Laszczak
2018-12-11 19:04 ` [v1,2/2] " Pawel Laszczak
2018-12-11 19:04 ` [PATCH v1 2/2] " Pawel Laszczak
2018-12-12 2:04 ` Peter Chen
2018-12-12 2:04 ` [v1,2/2] " Peter Chen
2018-12-12 6:55 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-12 6:55 ` [v1,2/2] " Felipe Balbi
2018-12-12 7:38 ` [PATCH v1 2/2] " Peter Chen
2018-12-12 7:38 ` [v1,2/2] " Peter Chen
2018-12-12 8:34 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-12 8:34 ` [v1,2/2] " Felipe Balbi
2018-12-12 8:34 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-12 9:24 ` Peter Chen [this message]
2018-12-12 9:24 ` [v1,2/2] " Peter Chen
2018-12-12 15:53 ` [PATCH v1 2/2] " Bin Liu
2018-12-12 15:53 ` [v1,2/2] " Bin Liu
2018-12-12 15:53 ` [PATCH v1 2/2] " Bin Liu
2018-12-13 1:21 ` Peter Chen
2018-12-13 1:21 ` [v1,2/2] " Peter Chen
2018-12-12 6:52 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-12 6:52 ` [v1,2/2] " Felipe Balbi
2018-12-12 6:52 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-14 3:46 ` Kishon Vijay Abraham I
2018-12-14 3:46 ` [v1,2/2] " Kishon Vijay Abraham I
2018-12-17 5:46 ` [PATCH v1 2/2] " Pawel Laszczak
2018-12-17 5:46 ` [v1,2/2] " Pawel Laszczak
2018-12-17 11:25 ` [PATCH v1 2/2] " Pawel Laszczak
2018-12-17 11:25 ` [v1,2/2] " Pawel Laszczak
2018-12-17 11:34 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-17 11:34 ` [v1,2/2] " Felipe Balbi
2018-12-17 11:34 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-17 11:51 ` Pawel Laszczak
2018-12-17 11:51 ` [v1,2/2] " Pawel Laszczak
2018-12-17 11:56 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-17 11:56 ` [v1,2/2] " Felipe Balbi
2018-12-17 11:56 ` [PATCH v1 2/2] " Felipe Balbi
2018-12-13 9:35 ` Peter Chen
2018-12-13 9:35 ` [v1,2/2] " Peter Chen
2018-12-16 13:01 ` [PATCH v1 2/2] " Pawel Laszczak
2018-12-16 13:01 ` [v1,2/2] " Pawel Laszczak
2018-12-14 22:56 ` [PATCH v1 2/2] " kbuild test robot
2018-12-14 22:56 ` [v1,2/2] " kbuild test robot
2018-12-14 22:56 ` [PATCH v1 2/2] " kbuild test robot
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