linux-kernel - Re: [PATCH v1 0/3] nvmem: Add support for write-only instances, and clean-up

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Date:   Tue, 25 Feb 2020 17:04:25 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Nicholas Johnson <nicholas.johnson-opensource@...look.com.au>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: Re: [PATCH v1 0/3] nvmem: Add support for write-only instances, and
 clean-up



On 25/02/2020 15:23, Nicholas Johnson wrote:
>> Why can not we add a check for reg_read in bin_attr_nvmem_read() before
>> dereferencing it?
> That can be easily done in PATCH v2. What error code should be returned?
> 
-EPERM should be good in this case indicating Operation not permitted 
for implementation reasons!

--srini