Re: [PATCH] mmc: Change the enhanced area related sysfs output format

[Wolfram Sang]

On Tue, Jun 14, 2016 at 10:33:06AM +0200, Beata Baranowska wrote:
> From: Chuanxiao Dong <chuanxiao.dong@xxxxxxxxx>
> 
> When the enhanced area feature was not enabled, the related sysfs will 
> have -EINVAL(-22) value, so change the sysfs output format to display 
> the correct value.
> 
> Signed-off-by: Chuanxiao Dong <chuanxiao.dong@xxxxxxxxx>

What about introducing attribute_group an use the is_visible callback
there, so they won't get displayed at all?

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