From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: "Matti Lehtimäki" <matti.lehtimaki@gmail.com>
Cc: linux-iio <linux-iio@vger.kernel.org>,
~postmarketos/upstreaming@lists.sr.ht,
Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Linus Walleij <linus.walleij@linaro.org>,
Alexandru Ardelean <aardelean@deviqon.com>,
Cai Huoqing <cai.huoqing@linux.dev>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] iio: st_sensors: Retry ID verification on failure
Date: Mon, 25 Jul 2022 23:20:55 +0200 [thread overview]
Message-ID: <CAHp75VeJtorTzV-dmxgJz+UD4gTWY1v67U0iU5nZ1pR36W9tMg@mail.gmail.com> (raw)
In-Reply-To: <20220724164316.68393-1-matti.lehtimaki@gmail.com>
On Sun, Jul 24, 2022 at 6:54 PM Matti Lehtimäki
<matti.lehtimaki@gmail.com> wrote:
>
> Some sensors do not always start fast enough to read a valid ID from
> registers at first attempt. Let's retry at most 3 times with short sleep
> in between to fix random timing issues.
...
> + for (i = 0; i < VERIFY_ID_RETRY_COUNT; i++) {
> + err = regmap_read(sdata->regmap,
> + sdata->sensor_settings->wai_addr, &wai);
> +
> + if (!err && sdata->sensor_settings->wai == wai)
> + return 0;
> +
> + msleep(20);
NIH regmap_read_poll_timeout()
> + }
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2022-07-25 21:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-24 16:43 [PATCH 1/2] iio: st_sensors: Retry ID verification on failure Matti Lehtimäki
2022-07-24 16:43 ` [PATCH 2/2] iio: st_sensors: Fix null pointer on defer_probe error Matti Lehtimäki
2022-07-25 21:24 ` Andy Shevchenko
2022-07-25 21:20 ` Andy Shevchenko [this message]
2022-07-31 16:00 ` [PATCH 1/2] iio: st_sensors: Retry ID verification on failure Jonathan Cameron
2022-07-31 18:51 ` Matti Lehtimäki
2022-07-31 20:17 ` Jonathan Cameron
2022-08-03 18:20 ` Linus Walleij
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