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From: <mike.looijmans@topic.nl>
To: Md Shofiqul Islam <shofiqtest@gmail.com>,
	linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: jic23@kernel.org, dlechner@baylibre.com, nuno.sa@analog.com,
	andy@kernel.org
Subject: Re: [PATCH 2/3] iio: adc: ti-ads1298: Fix incorrect timeout comment
Date: Thu, 7 May 2026 07:19:58 +0200	[thread overview]
Message-ID: <66c5335c-b4cb-448f-8ad5-9f80edb63273@topic.nl> (raw)
In-Reply-To: <20260506181508.6813-3-shofiqtest@gmail.com>

On 5/6/26 20:15, Md Shofiqul Islam wrote:
> At the lowest supported data rate of 250Hz, one conversion period is
> 4ms, not 40ms. Fix the comment to correctly reflect the timing.
> The 50ms timeout value itself is correct as a conservative margin.

The 50ms value is also wrong then, change it to 5. That's already more than 
enough margin.


>
> Signed-off-by: Md Shofiqul Islam <shofiqtest@gmail.com>
> ---
>   drivers/iio/adc/ti-ads1298.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iio/adc/ti-ads1298.c b/drivers/iio/adc/ti-ads1298.c
> index cf5f954206..186bda3087 100644
> --- a/drivers/iio/adc/ti-ads1298.c
> +++ b/drivers/iio/adc/ti-ads1298.c
> @@ -210,7 +210,7 @@ static int ads1298_read_one(struct ads1298_private *priv, int chan_index)
>   		return ret;
>   	}
>   
> -	/* Cannot take longer than 40ms (250Hz) */
> +	/* Cannot take longer than 4ms at the lowest rate (250Hz) */
>   	ret = wait_for_completion_timeout(&priv->completion, msecs_to_jiffies(50));
>   	if (!ret)
>   		return -ETIMEDOUT;


-- 
Mike Looijmans
System Expert

TOPIC Embedded Products B.V.
Materiaalweg 4, 5681 RJ Best
The Netherlands

T: +31 (0) 499 33 69 69
E: mike.looijmans@topic.nl
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  reply	other threads:[~2026-05-07  5:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-06 18:15 [PATCH 0/3] iio: adc: ti-ads1298: Three driver cleanups Md Shofiqul Islam
2026-05-06 18:15 ` [PATCH 1/3] iio: adc: ti-ads1298: Add parentheses around macro parameter Md Shofiqul Islam
2026-05-07  5:21   ` mike.looijmans
2026-05-06 18:15 ` [PATCH 2/3] iio: adc: ti-ads1298: Fix incorrect timeout comment Md Shofiqul Islam
2026-05-07  5:19   ` mike.looijmans [this message]
2026-05-06 18:15 ` [PATCH 3/3] iio: adc: ti-ads1298: Don't enable internal test signal during init Md Shofiqul Islam
2026-05-07  5:25   ` mike.looijmans

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