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* [PATCH 1/2] iio: imu: st_lsm6dsx: Limit requested watermark value to hwfifo size
@ 2022-01-17 10:25 ` Paul Cercueil
  0 siblings, 0 replies; 14+ messages in thread
From: Paul Cercueil @ 2022-01-17 10:25 UTC (permalink / raw)
  To: Jonathan Cameron, Lars-Peter Clausen
  Cc: linux-iio, linux-arm-kernel, linux-kernel, Paul Cercueil,
	Lorenzo Bianconi

Instead of returning an error if the watermark value is too high, which
the core will silently ignore anyway, limit the value to the hardware
FIFO size; a lower-than-requested value is still better than using the
default, which is usually 1.

Cc: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 727b4b6ac696..5fd46bf1a11b 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -54,6 +54,7 @@
 #include <linux/iio/sysfs.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/minmax.h>
 #include <linux/pm.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
@@ -1607,8 +1608,7 @@ int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val)
 	struct st_lsm6dsx_hw *hw = sensor->hw;
 	int err;
 
-	if (val < 1 || val > hw->settings->fifo_ops.max_size)
-		return -EINVAL;
+	val = clamp_val(val, 1, hw->settings->fifo_ops.max_size);
 
 	mutex_lock(&hw->conf_lock);
 
-- 
2.34.1


^ permalink raw reply	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2022-06-12  8:42 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-17 10:25 [PATCH 1/2] iio: imu: st_lsm6dsx: Limit requested watermark value to hwfifo size Paul Cercueil
2022-01-17 10:25 ` Paul Cercueil
2022-01-17 10:25 ` [PATCH 2/2] iio: at91-sama5d2: " Paul Cercueil
2022-01-17 10:25   ` Paul Cercueil
2022-01-22 17:04   ` Jonathan Cameron
2022-01-22 17:04     ` Jonathan Cameron
2022-06-04 15:05     ` Jonathan Cameron
2022-06-04 15:05       ` Jonathan Cameron
2022-06-04 22:41       ` Paul Cercueil
2022-06-04 22:41         ` Paul Cercueil
2022-06-12  8:49         ` Jonathan Cameron
2022-06-12  8:49           ` Jonathan Cameron
2022-01-17 10:56 ` [PATCH 1/2] iio: imu: st_lsm6dsx: " Lorenzo Bianconi
2022-01-17 10:56   ` Lorenzo Bianconi

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