From: Timur Tabi <timur@codeaurora.org>
To: Stephen Boyd <swboyd@chromium.org>,
Matt Mackall <mpm@selenic.com>,
Stanimir Varbanov <stanimir.varbanov@linaro.org>,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org,
timur@kernel.org, vinod.koul@linaro.org
Subject: Re: [PATCH 1/2] hwrng: msm: add a spinlock and support for blocking reads
Date: Fri, 22 Jun 2018 13:03:32 -0500 [thread overview]
Message-ID: <4bc0afe1-0189-88c0-40aa-23a312325635@codeaurora.org> (raw)
In-Reply-To: <152968991381.16708.522979730327886581@swboyd.mtv.corp.google.com>
On 6/22/18 12:51 PM, Stephen Boyd wrote:
> Perhaps it's because you implemented the 'wait' functionality in this
> driver? Before the patch there wasn't any sort of wait check so we would
> bail out if there wasn't any data even if the caller requested that we
> wait for randomness to be available.
No, my tests showed the race condition (or at least something that looks
like a race condition) even without the 'wait' feature. I added support
for 'wait' only recently, but I've been working with the crypto people
for a month on everything else.
--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc. Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2018-06-22 18:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-21 15:17 [PATCH 1/2] hwrng: msm: add a spinlock and support for blocking reads Timur Tabi
2018-06-21 15:17 ` [PATCH 2/2] hwrng: msm: add ACPI support Timur Tabi
2018-06-22 4:23 ` Vinod
2018-06-22 4:26 ` Timur Tabi
2018-06-22 4:44 ` Vinod
2018-06-22 4:46 ` Timur Tabi
2018-06-22 4:48 ` Vinod
2018-06-22 4:17 ` [PATCH 1/2] hwrng: msm: add a spinlock and support for blocking reads Vinod
2018-06-22 4:18 ` Timur Tabi
2018-06-22 4:24 ` Vinod
2018-06-22 4:28 ` Timur Tabi
2018-06-22 5:36 ` Stephen Boyd
2018-06-22 13:11 ` Timur Tabi
2018-06-22 15:38 ` Stanimir Varbanov
2018-06-22 15:41 ` Timur Tabi
2018-06-22 17:51 ` Stephen Boyd
2018-06-22 18:03 ` Timur Tabi [this message]
2018-06-22 21:17 ` Timur Tabi
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