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Date:   Thu, 18 Aug 2016 21:07:34 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH] smc91c92_cs : add a spinlock to avoid race condition

From: Pavel Andrianov <>
Date: Tue, 16 Aug 2016 16:39:06 +0300

> smc_reset may be executed in parallel with timer function media_check.
> To avoid data race in smc_set_xcvr a spinlock was added.
> Found by Linux Driver Verification project (
> Signed-off-by: Pavel Andrianov <>

This is not sufficient.

You have to block basically the entire function, because both
smc_reset and media_check program the bank selection so could
corrupt eachother's register accesses.

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