linux-kernel - Re: [PATCH v2] hwmon: (aquacomputer_d5next) Add selective 200ms delay after sending ctrl report

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Message-ID: <d7ea15aa-5348-3fd0-b399-ec03af438c85@gmail.com>
Date:   Sat, 29 Jul 2023 15:42:47 +0200
From:   Aleksa Savic <savicaleksa83@...il.com>
To:     linux-hwmon@...r.kernel.org
Cc:     savicaleksa83@...il.com, Jack Doan <me@...kdoan.com>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] hwmon: (aquacomputer_d5next) Add selective 200ms delay
 after sending ctrl report

On 2023-07-29 15:31:12 GMT+02:00, Aleksa Savic wrote:
> Add a 200ms delay after sending a ctrl report to Quadro,
> Octo, D5 Next and Aquaero to give them enough time to
> process the request and save the data to memory. Otherwise,
> under heavier userspace loads where multiple sysfs entries
> are usually set in quick succession, a new ctrl report could
> be requested from the device while it's still processing the
> previous one and fail with -EPIPE.
> 
> Reported by a user on Github [1] and tested by both of us.
> 
> [1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/issues/82
> 
> Signed-off-by: Aleksa Savic <savicaleksa83@...il.com>
> ---
> Changes in v2:
> - Added missing <linux/delay.h> include
> ---
Sorry for the noise, I didn't include the Cc: stable@...r.kernel.org
line from v1 in v2. Do I need to resend?

Thanks in advance,
Aleksa