linux-kernel - Re: [PATCH 2/3] firmware: add offset to request_firmware_into

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Message-ID: <15c47e4d-e70d-26bb-9747-0ad0aa81597b@broadcom.com>
Date:   Thu, 23 May 2019 09:36:02 -0700
From:   Scott Branden <scott.branden@...adcom.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Luis Chamberlain <mcgrof@...nel.org>,
        Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        Olof Johansson <olof@...om.net>
Subject: Re: [PATCH 2/3] firmware: add offset to request_firmware_into_buf

Hi Greg,

On 2019-05-22 10:52 p.m., Greg Kroah-Hartman wrote:
> On Wed, May 22, 2019 at 07:51:12PM -0700, Scott Branden wrote:
>> Add offset to request_firmware_into_buf to allow for portions
>> of firmware file to be read into a buffer.  Necessary where firmware
>> needs to be loaded in portions from file in memory constrained systems.
>>
>> Signed-off-by: Scott Branden <scott.branden@...adcom.com>
>> ---
>>   drivers/base/firmware_loader/firmware.h |  5 +++
>>   drivers/base/firmware_loader/main.c     | 49 +++++++++++++++++--------
>>   include/linux/firmware.h                |  8 +++-
>>   3 files changed, 45 insertions(+), 17 deletions(-)
> No new firmware test for this new option?  How do we know it even works?

I was unaware there are existing firmware tests.  Please let me know 
where these tests exists and I can add a test for this new option.

We have tested this with a new driver in development which requires the 
firmware file to be read in portions into memory.  I can add my 
tested-by and others to the commit message if desired.

> :)
>
> thanks,
>
> greg k-h

Regards,

Scott