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Date: Fri, 16 Oct 2015 11:28:46 +0100
From: Mark Brown <broonie@...nel.org>
To: Franklin S Cooper Jr <fcooper@...com>
Cc: linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
nsekhar@...com, ssantosh@...nel.org, iivanov@...sol.com,
m-karicheri2@...com, iivanov.xz@...il.com,
andy.shevchenko@...il.com, jarkko.nikula@...ux.intel.com,
hkallweit1@...il.com
Subject: Re: [PATCH] spi: Setup the master controller driver before setting
the chipselect
On Thu, Oct 15, 2015 at 03:51:45PM -0500, Franklin S Cooper Jr wrote:
> Some devices depend on the master controller driver setup function being
> called before calling any chipselect functions.
>
> Insure that this is done otherwise uninitialized structures may be
> accessed causing a kernel panic.
I think this is a sensible change but can we please have a better
changelog - why is this the best thing to do rather than fixing the
driver to not crash? There are a bunch of good reasons to do the master
setup before asserting chip select but a driver crashing isn't one of
them, it's not clear that this isn't a bug in the driver.
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