From: Varshini Rajendran <varshini.rajendran@microchip.com>
To: <ehristev@kernel.org>, <jic23@kernel.org>,
<dlechner@baylibre.com>, <nuno.sa@analog.com>, <andy@kernel.org>,
<robh@kernel.org>, <krzk+dt@kernel.org>, <conor+dt@kernel.org>,
<nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>,
<claudiu.beznea@tuxon.dev>, <srini@kernel.org>,
<marcelo.schmitt@analog.com>, <radu.sabau@analog.com>,
<Jonathan.Santos@analog.com>, <jorge.marques@analog.com>,
<joshua.crofts1@gmail.com>, <jishnu.prakash@oss.qualcomm.com>,
<antoniu.miclaus@analog.com>, <varshini.rajendran@microchip.com>,
<mazziesaccount@gmail.com>, <linux-iio@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v4 04/16] iio: adc: at91-sama5d2_adc: add condition to validate calibration data
Date: Mon, 27 Jul 2026 17:56:21 +0530 [thread overview]
Message-ID: <20260727122633.117435-5-varshini.rajendran@microchip.com> (raw)
In-Reply-To: <20260727122633.117435-1-varshini.rajendran@microchip.com>
Add additional condition to validate the calibration data read from the
NVMEM cell using the TAG of the packet.
Signed-off-by: Varshini Rajendran <varshini.rajendran@microchip.com>
---
drivers/iio/adc/at91-sama5d2_adc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 798e4d60bf69..15dc88f4961b 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -2297,7 +2297,8 @@ static int at91_adc_temp_sensor_init(struct at91_adc_state *st,
return dev_err_probe(dev, PTR_ERR(buf),
"Failed to read calibration data!\n");
- if (len < layout->min_len * sizeof(*buf)) {
+ if (len < layout->min_len * sizeof(*buf) ||
+ buf[layout->tag_idx] != AT91_TEMP_CALIB_TAG_ACST) {
dev_err(dev, "Invalid calibration data!\n");
return -EINVAL;
}
--
2.34.1
next prev parent reply other threads:[~2026-07-27 12:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-27 12:26 [PATCH v4 00/16] Add thermal management support for sama7d65 Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 01/16] dt-bindings: iio: adc: at91-sama5d2: document sama7d65 Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 02/16] iio: adc: at91-sama5d2_adc: use cleanup.h for NVMEM buffer Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 03/16] iio: adc: at91-sama5d2_adc: rework temp calibration layout handling Varshini Rajendran
2026-07-27 12:26 ` Varshini Rajendran [this message]
2026-07-27 12:26 ` [PATCH v4 05/16] iio: adc: at91-sama5d2_adc: remove unnecessary casts in of_device_id Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 06/16] iio: adc: at91-sama5d2_adc: adapt the driver for sama7d65 Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 07/16] dt-bindings: nvmem: microchip,sama7g5-otpc: add sama7d65 and dt node example Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 08/16] nvmem: microchip-otpc: nvmem: microchip-otpc: add tag-based packet lookup Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 09/16] nvmem: microchip-otpc: nvmem: add emulation mode and OTP access validation Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 10/16] ARM: dts: microchip: sama7d65: add cpu opps Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 11/16] ARM: dts: microchip: sama7d65: Add ADC node Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 12/16] ARM: dts: microchip: sama7d65_curiosity: Enable ADC, DVFS Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 13/16] ARM: dts: microchip: sama7d65: add otpc node Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 14/16] ARM: dts: microchip: sama7d65: add cells for temperature calibration Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 15/16] ARM: dts: microchip: sama7d65: add temperature sensor Varshini Rajendran
2026-07-27 12:26 ` [PATCH v4 16/16] ARM: dts: microchip: sama7d65: add thermal zones node Varshini Rajendran
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