linux-kernel - Re: [PATCH] usb: gadget: ffs: ffs_aio

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Message-ID: <87imlb5z7z.fsf@kernel.org>
Date:   Thu, 16 Jan 2020 15:04:48 +0200
From:   Felipe Balbi <balbi@...nel.org>
To:     "Ardelean\, Alexandru" <alexandru.Ardelean@...log.com>,
        "linux-usb\@vger.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Cc:     "gregkh\@linuxfoundation.org" <gregkh@...uxfoundation.org>,
        "mina86\@mina86.com" <mina86@...a86.com>,
        "lars\@metafoo.de" <lars@...afoo.de>
Subject: Re: [PATCH] usb: gadget: ffs: ffs_aio_cancel(): Save/restore IRQ flags


Hi,

"Ardelean, Alexandru" <alexandru.Ardelean@...log.com> writes:

> On Wed, 2019-11-06 at 14:02 +0200, Alexandru Ardelean wrote:
>> From: Lars-Peter Clausen <lars@...afoo.de>
>> 
>> ffs_aio_cancel() can be called from both interrupt and thread context.
>> Make
>> sure that the current IRQ state is saved and restored by using
>> spin_{un,}lock_irq{save,restore}().
>> 
>> Otherwise undefined behavior might occur.
>
> Hey,
>
> This is a patch-ping.

Please read:

https://lore.kernel.org/linux-usb/875zhd6pw0.fsf@kernel.org/T/#u

We're gonna need a resend, sorry

-- 
balbi

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