From: Mark Greer <mgreer@animalcreek.com>
To: Geoff Lansberry <geoff@kuvee.com>
Cc: linux-wireless@vger.kernel.org, lauro.venancio@openbossa.org,
aloisio.almeida@openbossa.org, sameo@linux.intel.com,
robh+dt@kernel.org, mark.rutland@arm.com, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
justin@kuvee.com, Jaret Cantu <jaret.cantu@timesys.com>
Subject: Re: [PATCH 3/3] nfc: trf7970a: Prevent repeated polling from crashing the kernel
Date: Thu, 15 Dec 2016 18:18:23 -0700 [thread overview]
Message-ID: <20161216011823.GC25227@animalcreek.com> (raw)
In-Reply-To: <1481841044-4314-3-git-send-email-glansberry@gmail.com>
On Thu, Dec 15, 2016 at 05:30:44PM -0500, Geoff Lansberry wrote:
> From: Jaret Cantu <jaret.cantu@timesys.com>
>
> Repeated polling attempts cause a NULL dereference error to occur.
> This is because the curent state of the trf7970a is reading but
> a request has been made to send a command.
>
> The solution is to properly kill the waiting reading (workqueue)
> before failing on the send.
Maybe its just me but I find this description a little hard to grok.
Mind reworking it?
The patch itself looks fine.
Thanks,
Mark
--
next prev parent reply other threads:[~2016-12-16 1:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-15 22:30 [PATCH 1/3] NFC: trf7970a: add device tree option for 27MHz clock Geoff Lansberry
2016-12-15 22:30 ` [PATCH 2/3] NFC: trf7970a: Add device tree option of 1.8 Volt IO voltage Geoff Lansberry
2016-12-16 1:13 ` Mark Greer
2016-12-19 22:35 ` Rob Herring
2016-12-20 16:13 ` Geoff Lansberry
2016-12-21 2:07 ` Mark Greer
2016-12-15 22:30 ` [PATCH 3/3] nfc: trf7970a: Prevent repeated polling from crashing the kernel Geoff Lansberry
2016-12-16 1:18 ` Mark Greer [this message]
2016-12-16 1:06 ` [PATCH 1/3] NFC: trf7970a: add device tree option for 27MHz clock Mark Greer
2016-12-19 22:31 ` Rob Herring
2016-12-19 23:23 ` Geoff Lansberry
2016-12-22 18:48 ` Rob Herring
2016-12-20 16:10 Geoff Lansberry
2016-12-20 16:10 ` [PATCH 3/3] nfc: trf7970a: Prevent repeated polling from crashing the kernel Geoff Lansberry
2016-12-20 16:16 [PATCH 1/3] NFC: trf7970a: add device tree option for 27MHz clock Geoff Lansberry
2016-12-20 16:16 ` [PATCH 3/3] nfc: trf7970a: Prevent repeated polling from crashing the kernel Geoff Lansberry
2016-12-20 18:59 ` Mark Greer
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