From: Jonathan Cameron <jic23@kernel.org>
To: Brian Masney <masneyb@onstation.org>, linux-iio@vger.kernel.org
Cc: devel@driverdev.osuosl.org, gregkh@linuxfoundation.org,
lars@metafoo.de, pmeerw@pmeerw.net, knaack.h@gmx.de,
linux-kernel@vger.kernel.org, Jon.Brenner@ams.com
Subject: Re: [PATCH v4 03/26] staging: iio: tsl2583: remove unnecessary chip status checks in suspend/resume
Date: Sun, 13 Nov 2016 11:56:07 +0000 [thread overview]
Message-ID: <586d163b-157e-27ee-2418-1de7ca189548@kernel.org> (raw)
In-Reply-To: <1478974781-1457-4-git-send-email-masneyb@onstation.org>
On 12/11/16 18:19, Brian Masney wrote:
> The device probing and the suspend/resume code checks a flag internal to
> the driver that determines whether or not the chip is in a working
> state. These checks are not needed. This patch removes the unnecessary
> checks. It will do no harm to the hardware if the chip is
> reinitialized if it is already powered on.
>
> Signed-off-by: Brian Masney <masneyb@onstation.org>
Applied.
> ---
> drivers/staging/iio/light/tsl2583.c | 16 +++-------------
> 1 file changed, 3 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/staging/iio/light/tsl2583.c b/drivers/staging/iio/light/tsl2583.c
> index a550023..40aa78e 100644
> --- a/drivers/staging/iio/light/tsl2583.c
> +++ b/drivers/staging/iio/light/tsl2583.c
> @@ -412,13 +412,6 @@ static int tsl2583_chip_init_and_power_on(struct iio_dev *indio_dev)
> struct tsl2583_chip *chip = iio_priv(indio_dev);
> int ret;
>
> - /* and make sure we're not already on */
> - if (chip->taos_chip_status == TSL258X_CHIP_WORKING) {
> - /* if forcing a register update - turn off, then on */
> - dev_info(&chip->client->dev, "device is already enabled\n");
> - return -EINVAL;
> - }
> -
> /* Power on the device; ADC off. */
> ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_ON);
> if (ret < 0)
> @@ -841,10 +834,8 @@ static int __maybe_unused taos_suspend(struct device *dev)
>
> mutex_lock(&chip->als_mutex);
>
> - if (chip->taos_chip_status == TSL258X_CHIP_WORKING) {
> - ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_OFF);
> - chip->taos_chip_status = TSL258X_CHIP_SUSPENDED;
> - }
> + ret = tsl2583_set_power_state(chip, TSL258X_CNTL_PWR_OFF);
> + chip->taos_chip_status = TSL258X_CHIP_SUSPENDED;
>
> mutex_unlock(&chip->als_mutex);
> return ret;
> @@ -858,8 +849,7 @@ static int __maybe_unused taos_resume(struct device *dev)
>
> mutex_lock(&chip->als_mutex);
>
> - if (chip->taos_chip_status == TSL258X_CHIP_SUSPENDED)
> - ret = tsl2583_chip_init_and_power_on(indio_dev);
> + ret = tsl2583_chip_init_and_power_on(indio_dev);
>
> mutex_unlock(&chip->als_mutex);
> return ret;
>
next prev parent reply other threads:[~2016-11-13 11:56 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-12 18:19 [PATCH v4 00/26] staging: iio: tsl2583: move out of staging Brian Masney
2016-11-12 18:19 ` [PATCH v4 01/26] staging: iio: tsl2583: check if chip is in a working state in in_illuminance_calibrate_store Brian Masney
2016-11-13 11:54 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 02/26] staging: iio: tsl2583: remove unnecessary chip status check in taos_get_lux Brian Masney
2016-11-13 11:55 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 03/26] staging: iio: tsl2583: remove unnecessary chip status checks in suspend/resume Brian Masney
2016-11-13 11:56 ` Jonathan Cameron [this message]
2016-11-12 18:19 ` [PATCH v4 04/26] staging: iio: tsl2583: change current chip state from a tristate to a bool Brian Masney
2016-11-13 11:58 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 05/26] staging: iio: tsl2583: remove redundant write to the control register in taos_probe() Brian Masney
2016-11-13 12:06 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 06/26] staging: iio: tsl2583: remove the FSF's mailing address Brian Masney
2016-11-13 12:07 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 07/26] staging: iio: tsl2583: cleaned up logging Brian Masney
2016-11-13 12:07 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 08/26] staging: iio: tsl2583: unify function and variable prefix to tsl2583_ Brian Masney
2016-11-13 12:09 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 09/26] staging: iio: tsl2583: fix alignment of #define values Brian Masney
2016-11-13 12:13 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 10/26] staging: iio: tsl2583: fix comparison between signed and unsigned integers Brian Masney
2016-11-13 12:14 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 11/26] staging: iio: tsl2583: change newlines to improve readability Brian Masney
2016-11-13 12:15 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 12/26] staging: iio: tsl2583: combine sysfs documentation Brian Masney
2016-11-13 12:16 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 13/26] staging: iio: tsl2583: fix multiline comment syntax Brian Masney
2016-11-13 12:17 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 14/26] staging: iio: tsl2583: updated code comment to match what the code does Brian Masney
2016-11-13 12:18 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 15/26] staging: iio: tsl2583: moved code block inside else statement Brian Masney
2016-11-13 12:20 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 16/26] staging: iio: tsl2583: change tsl2583_als_calibrate() to return 0 on success Brian Masney
2016-11-13 12:21 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 17/26] staging: iio: tsl2583: remove unnecessary parentheses Brian Masney
2016-11-13 12:22 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 18/26] staging: iio: tsl2583: don't assume an unsigned int is 32 bits Brian Masney
2016-11-13 12:23 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 19/26] staging: iio: tsl2583: move from a global to a per device lux table Brian Masney
2016-11-13 12:25 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 20/26] staging: iio: tsl2583: add tsl2583 to list of supported devices in the header Brian Masney
2016-11-13 12:28 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 21/26] staging: iio: tsl2583: clarified comment about clearing interrupts Brian Masney
2016-11-13 12:28 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 22/26] staging: iio: tsl2583: remove comment for tsl2583_probe() Brian Masney
2016-11-13 12:29 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 23/26] staging: iio: tsl2583: remove unnecessary memset call Brian Masney
2016-11-13 12:29 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 24/26] staging: iio: tsl2583: remove unnecessary variable initialization Brian Masney
2016-11-13 12:30 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 25/26] staging: iio: tsl2583: add copyright and MODULE_AUTHOR Brian Masney
2016-11-13 12:35 ` Jonathan Cameron
2016-11-12 18:19 ` [PATCH v4 26/26] staging: iio: tsl2583: move out of staging Brian Masney
2016-11-13 12:57 ` Jonathan Cameron
2016-11-13 16:18 ` Brian Masney
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