Re: [PATCH] spi: expose spi_master and spi_device statistics via sysfs

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On Wed, Jun 03, 2015 at 01:25:58PM +0200, Lars-Peter Clausen wrote:

> Having those kinds of stats in world readable files has serious security
> implications as they can be used to implement side-channel attacks. They
> should probably only be available in debugfs for root.

We do get to control the permissions on sysfs files, though it's a bit
more unusual to make things root only (and there is the histogram).

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