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Sun, 17 May 2026 09:31:25 -0700 (PDT) Received: from localhost.localdomain ([82.215.118.79]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-45da15a6449sm30401983f8f.37.2026.05.17.09.31.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 17 May 2026 09:31:24 -0700 (PDT) From: Stepan Ionichev To: jic23@kernel.org Cc: daniel.lezcano@linaro.org, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, gregkh@linuxfoundation.org, hcazarim@yahoo.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, sozdayvek@gmail.com Subject: [PATCH] iio: adc: nxp-sar-adc: notify trigger on channel read error in buffer ISR Date: Sun, 17 May 2026 21:31:11 +0500 Message-Id: <20260517163111.469-1-sozdayvek@gmail.com> X-Mailer: git-send-email 2.33.0.windows.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" nxp_sar_adc_isr_buffer() bails on the first channel-read failure without calling iio_trigger_notify_done(), so a single I/O error leaves the trigger's use_count stuck and the buffer flow wedged until rebind. Route the error exit through a 'done:' label that always calls iio_trigger_notify_done(). Fixes: 4434072a893e ("iio: adc: Add the NXP SAR ADC support for the s32g2/3= platforms") Cc: stable@vger.kernel.org Signed-off-by: Stepan Ionichev --- drivers/iio/adc/nxp-sar-adc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/nxp-sar-adc.c b/drivers/iio/adc/nxp-sar-adc.c index 9d9f2c76b..ed004812c 100644 --- a/drivers/iio/adc/nxp-sar-adc.c +++ b/drivers/iio/adc/nxp-sar-adc.c @@ -341,7 +341,7 @@ static void nxp_sar_adc_isr_buffer(struct iio_dev *indi= o_dev) ret =3D nxp_sar_adc_read_data(info, info->buffered_chan[i]); if (ret < 0) { nxp_sar_adc_read_notify(info); - return; + goto done; } =20 info->buffer[i] =3D ret; @@ -352,6 +352,7 @@ static void nxp_sar_adc_isr_buffer(struct iio_dev *indi= o_dev) iio_push_to_buffers_with_ts(indio_dev, info->buffer, sizeof(info->buffer), iio_get_time_ns(indio_dev)); =20 +done: iio_trigger_notify_done(indio_dev->trig); } =20 --=20 2.43.0