From: Alan Stern <stern@rowland.harvard.edu>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
"Ahmed S. Darwish" <a.darwish@linutronix.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org,
Thomas Winischhofer <thomas@winischhofer.net>,
Johan Hovold <johan@kernel.org>,
Mathias Nyman <mathias.nyman@intel.com>,
Valentina Manea <valentina.manea.m@gmail.com>,
Shuah Khan <shuah@kernel.org>,
linux-omap@vger.kernel.org, Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org,
Duncan Sands <duncan.sands@free.fr>
Subject: Re: [patch V2 11/13] usb: gadget: udc: Remove in_interrupt()/in_irq() from comments
Date: Mon, 19 Oct 2020 12:28:35 -0400 [thread overview]
Message-ID: <20201019162835.GC898631@rowland.harvard.edu> (raw)
In-Reply-To: <20201019101110.744172050@linutronix.de>
On Mon, Oct 19, 2020 at 12:06:40PM +0200, Thomas Gleixner wrote:
> From: Ahmed S. Darwish <a.darwish@linutronix.de>
>
> The usage of in_irq()/in_interrupt() in drivers is phased out for various
> reasons.
>
> The context description for usb_gadget_giveback_request() is misleading as
> in_interupt() means: hard interrupt or soft interrupt or bottom half
> disabled regions. But it's also invoked from task context when endpoints
> are torn down. Remove it as it's more confusing than helpful.
>
> Replace also the in_irq() comment with plain text.
>
> Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Cc: Felipe Balbi <balbi@kernel.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: linux-usb@vger.kernel.org
>
> ---
> drivers/usb/gadget/udc/core.c | 2 --
> drivers/usb/gadget/udc/dummy_hcd.c | 6 ++++--
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> --- a/drivers/usb/gadget/udc/core.c
> +++ b/drivers/usb/gadget/udc/core.c
> @@ -894,8 +894,6 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_reque
> * @ep: the endpoint to be used with with the request
> * @req: the request being given back
> *
> - * Context: in_interrupt()
> - *
> * This is called by device controller drivers in order to return the
> * completed request back to the gadget layer.
> */
> --- a/drivers/usb/gadget/udc/dummy_hcd.c
> +++ b/drivers/usb/gadget/udc/dummy_hcd.c
> @@ -1754,8 +1754,10 @@ static int handle_control_request(struct
> return ret_val;
> }
>
> -/* drive both sides of the transfers; looks like irq handlers to
> - * both drivers except the callbacks aren't in_irq().
> +/*
> + * Drive both sides of the transfers; looks like irq handlers to both
> + * drivers except that the callbacks are invoked from soft interrupt
> + * context.
> */
> static void dummy_timer(struct timer_list *t)
> {
For dummy-hcd.c:
Acked-by: Alan Stern <stern@rowland.harvard.edu>
next prev parent reply other threads:[~2020-10-19 16:28 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-19 10:06 [patch V2 00/13] USB: Cleanup in_interupt/in_irq/in_atomic() usage Thomas Gleixner
2020-10-19 10:06 ` [patch V2 01/13] USB: sisusbvga: Make console support depend on BROKEN Thomas Gleixner
2020-10-19 10:06 ` [patch V2 02/13] USB: serial: keyspan_pda: Replace in_interrupt() usage Thomas Gleixner
2020-10-25 16:56 ` Johan Hovold
2020-10-26 12:47 ` Sebastian Andrzej Siewior
2020-10-27 8:16 ` Johan Hovold
2020-10-19 10:06 ` [patch V2 03/13] USB: serial: keyspan_pda: Consolidate room query Thomas Gleixner
2020-10-25 17:05 ` Johan Hovold
2020-10-19 10:06 ` [patch V2 04/13] USB: serial: digi_acceleport: Remove in_interrupt() usage Thomas Gleixner
2020-10-25 17:16 ` Johan Hovold
2020-10-26 14:03 ` [PATCH v3 04/13 ] " Sebastian Andrzej Siewior
2020-10-27 8:26 ` Johan Hovold
2020-10-19 10:06 ` [patch V2 05/13] usb: xhci: Remove in_interrupt() checks Thomas Gleixner
2020-10-19 10:06 ` [patch V2 06/13] usb: host: isp1362: Replace in_interrupt() usage Thomas Gleixner
2020-10-28 11:27 ` Greg Kroah-Hartman
2020-10-19 10:06 ` [patch V2 07/13] usbip: Remove in_interrupt() check Thomas Gleixner
2020-10-19 10:06 ` [patch V2 08/13] usb: hosts: Remove in_interrupt() from comments Thomas Gleixner
2020-10-19 16:28 ` Alan Stern
2020-10-19 10:06 ` [patch V2 09/13] USB: host: ehci-pmcmsp: Cleanup usb_hcd_msp_remove() Thomas Gleixner
2020-10-19 16:28 ` Alan Stern
2020-10-19 10:06 ` [patch V2 10/13] usb: gadget: pxa27x_udc: Replace in_interrupt() usage in comments Thomas Gleixner
2020-10-19 10:06 ` [patch V2 11/13] usb: gadget: udc: Remove in_interrupt()/in_irq() from comments Thomas Gleixner
2020-10-19 16:28 ` Alan Stern [this message]
2020-10-19 10:06 ` [patch V2 12/13] usb: core: Replace in_interrupt() in comments Thomas Gleixner
2020-10-19 16:28 ` Alan Stern
2020-10-19 10:06 ` [patch V2 13/13] usb: atm: Replace in_interrupt() usage in comment Thomas Gleixner
2020-10-19 10:28 ` Duncan Sands
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