linux-kernel - Re: [RFC] bus: mhi: core: Load firmware asynchronous

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Message-ID: <403e93df-5b3c-acb3-2b65-df9a7834a9c5@codeaurora.org>
Date:   Mon, 13 Dec 2021 16:07:29 -0800
From:   Hemant Kumar <hemantk@...eaurora.org>
To:     Thomas Weißschuh <linux@...ssschuh.net>,
        Manivannan Sadhasivam <mani@...nel.org>
Cc:     linux-kernel@...r.kernel.org, mhi@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org,
        Mario Limonciello <Mario.Limonciello@....com>,
        Richard Hughes <hughsient@...il.com>
Subject: Re: [RFC] bus: mhi: core: Load firmware asynchronous


On 12/10/2021 8:16 AM, Thomas Weißschuh wrote:
> This gives userspace the possibility to provide the firehose bootloader
> via the sysfs-firmware-API instead of having to modify the global
> firmware loadpath.
> 
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> 
> ---
> 
> Please note that this is not tested yet, as I don't have access to a matching
> firmware file.
> This submission is to gather general feedback from the maintainers and then
> Richard will do the actual testing, while I'll do the development.
> 
> This patch is should not have any impact beyond moving from request_firmware()
> to request_firmware_nowait() and the involved code reshuffle.
what are we achieving by moving to async ver of the firmware load ? MHI 
boot flow can not do anything until BHI load is over. Is the intention 
eventually to enable firmware fallback mechanism  and manually load the 
firmware ?

[..]

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