linux-kernel - Re: [RFC PATCH 0/1] Verify if register is writeable before a write operation

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Message-ID: <3bd435a1-e6fa-5165-70e1-17a881423280@vaisala.com>
Date:   Tue, 2 Apr 2019 12:49:19 +0300
From:   Nandor Han <nandor.han@...sala.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 0/1] Verify if register is writeable before a write
 operation

On 4/2/19 12:06 PM, Mark Brown wrote:
> On Tue, Apr 02, 2019 at 08:01:21AM +0000, Han Nandor wrote:
>> Description
>> -----------
>> This is an RFC because I don't know if this is a bug or a normal use
>> case. It seems that the function `_regmap_raw_write_impl` from the regmap
>> framework verifies that a register is writable only using
>> the callback function, ignoring the other two (max allowed register,
>> register ranges)
> 
> Please don't send cover letters for single patches, if there is anything
> that needs saying put it in the changelog of the patch or after the ---
> if it's administrative stuff.  This reduces mail volume and ensures that
> any important information is recorded in the changelog rather than being
> lost.
> 

Copy that. If is OK, we can still discuss about this using this patch 
and I can send a single patch once the things are clear.