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Message-Id: <20210712061032.894677198@linuxfoundation.org>
Date: Mon, 12 Jul 2021 08:10:13 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Alexandru Ardelean <ardeleanalex@...il.com>,
Nuno Sa <nuno.sa@...log.com>,
Jonathan Cameron <Jonathan.Cameron@...wei.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 530/700] iio: adis16400: do not return ints in irq handlers
From: Nuno Sa <nuno.sa@...log.com>
[ Upstream commit ab3df79782e7d8a27a58576c9b4e8c6c4879ad79 ]
On an IRQ handler we should not return normal error codes as 'irqreturn_t'
is expected.
Not necessary to apply to stable as the original check cannot fail and
as such the bug cannot actually occur.
Fixes: 5eda3550a3cc1 ("staging:iio:adis16400: Preallocate transfer message")
Reviewed-by: Alexandru Ardelean <ardeleanalex@...il.com>
Signed-off-by: Nuno Sa <nuno.sa@...log.com>
Link: https://lore.kernel.org/r/20210422101911.135630-3-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/iio/imu/adis16400.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
index 785a4ce606d8..4aff16466da0 100644
--- a/drivers/iio/imu/adis16400.c
+++ b/drivers/iio/imu/adis16400.c
@@ -647,9 +647,6 @@ static irqreturn_t adis16400_trigger_handler(int irq, void *p)
void *buffer;
int ret;
- if (!adis->buffer)
- return -ENOMEM;
-
if (!(st->variant->flags & ADIS16400_NO_BURST) &&
st->adis.spi->max_speed_hz > ADIS16400_SPI_BURST) {
st->adis.spi->max_speed_hz = ADIS16400_SPI_BURST;
--
2.30.2
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