From: David Lechner <dlechner@baylibre.com>
To: "Michael Hennerich" <Michael.Hennerich@analog.com>,
"Jonathan Cameron" <jic23@kernel.org>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Mark Brown" <broonie@kernel.org>
Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-spi@vger.kernel.org,
David Lechner <dlechner@baylibre.com>
Subject: [PATCH v2 01/11] iio: adc: ad_sigma_delta: don't overallocate scan buffer
Date: Fri, 27 Jun 2025 18:39:57 -0500 [thread overview]
Message-ID: <20250627-iio-adc-ad7173-add-spi-offload-support-v2-1-f49c55599113@baylibre.com> (raw)
In-Reply-To: <20250627-iio-adc-ad7173-add-spi-offload-support-v2-0-f49c55599113@baylibre.com>
Fix overallocating the size of the scan buffer by converting bits to
bytes. The size is meant to be in bytes, so scanbits needs to be
divided by 8.
Signed-off-by: David Lechner <dlechner@baylibre.com>
---
drivers/iio/adc/ad_sigma_delta.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index 4c5f8d29a559fea7226b84141bcb148fb801f62c..6b3ef7ef403e00804abeb81025ed293b188e492b 100644
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -489,7 +489,7 @@ static int ad_sd_buffer_postenable(struct iio_dev *indio_dev)
return ret;
}
- samples_buf_size = ALIGN(slot * indio_dev->channels[0].scan_type.storagebits, 8);
+ samples_buf_size = ALIGN(slot * indio_dev->channels[0].scan_type.storagebits / 8, 8);
samples_buf_size += sizeof(int64_t);
samples_buf = devm_krealloc(&sigma_delta->spi->dev, sigma_delta->samples_buf,
samples_buf_size, GFP_KERNEL);
--
2.43.0
next prev parent reply other threads:[~2025-06-27 23:41 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-27 23:39 [PATCH v2 00/11] iio: adc: ad7173: add SPI offload support David Lechner
2025-06-27 23:39 ` David Lechner [this message]
2025-06-28 14:55 ` [PATCH v2 01/11] iio: adc: ad_sigma_delta: don't overallocate scan buffer Jonathan Cameron
2025-06-28 15:04 ` Jonathan Cameron
2025-06-27 23:39 ` [PATCH v2 02/11] iio: adc: ad_sigma_delta: sort includes David Lechner
2025-06-27 23:39 ` [PATCH v2 03/11] iio: adc: ad_sigma_delta: use u8 instead of uint8_t David Lechner
2025-06-27 23:40 ` [PATCH v2 04/11] iio: adc: ad_sigma_delta: use BITS_TO_BYTES() macro David Lechner
2025-06-28 14:56 ` Jonathan Cameron
2025-06-30 8:59 ` Andy Shevchenko
2025-06-30 13:33 ` David Lechner
2025-07-01 13:47 ` Andy Shevchenko
2025-07-01 17:36 ` Jonathan Cameron
2025-06-27 23:40 ` [PATCH v2 05/11] iio: adc: ad_sigma_delta: audit included headers David Lechner
2025-06-30 9:02 ` Andy Shevchenko
2025-06-27 23:40 ` [PATCH v2 06/11] iio: adc: ad_sigma_delta: refactor setting read address David Lechner
2025-06-27 23:40 ` [PATCH v2 07/11] iio: adc: ad_sigma_delta: use spi_optimize_message() David Lechner
2025-06-27 23:40 ` [PATCH v2 08/11] dt-bindings: trigger-source: add ADI Util Sigma-Delta SPI David Lechner
2025-06-27 23:40 ` [PATCH v2 09/11] spi: offload trigger: add ADI Util Sigma-Delta SPI driver David Lechner
2025-06-28 15:02 ` Jonathan Cameron
2025-07-01 20:57 ` David Lechner
2025-06-30 9:05 ` Andy Shevchenko
2025-06-27 23:40 ` [PATCH v2 10/11] iio: adc: ad_sigma_delta: add SPI offload support David Lechner
2025-06-27 23:40 ` [PATCH v2 11/11] iio: adc: ad7173: " David Lechner
2025-07-02 13:27 ` (subset) [PATCH v2 00/11] " Mark Brown
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