* [PATCH] Staging: iio: ade7758: Remove iio_dev mlock
@ 2018-01-29 14:49 ` Shreeya Patel
0 siblings, 0 replies; 2+ messages in thread
From: Shreeya Patel @ 2018-01-29 14:49 UTC (permalink / raw)
To: lars, Michael.Hennerich, jic23, knaack.h, pmeerw, gregkh,
linux-iio, devel, linux-kernel
Cc: Shreeya Patel
In the ade7758 file, read raw does not require iio_dev->mlock for
reads. It can run concurrently as resource protection is handled
by buf_lock in ade7758_spi_read_reg_8()
Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
---
drivers/staging/iio/meter/ade7758_core.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c
index 7b7ffe5..227dbfc 100644
--- a/drivers/staging/iio/meter/ade7758_core.c
+++ b/drivers/staging/iio/meter/ade7758_core.c
@@ -526,9 +526,7 @@ static int ade7758_read_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
- mutex_lock(&indio_dev->mlock);
ret = ade7758_read_samp_freq(&indio_dev->dev, val);
- mutex_unlock(&indio_dev->mlock);
return ret;
default:
return -EINVAL;
--
2.7.4
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] Staging: iio: ade7758: Remove iio_dev mlock
@ 2018-01-29 14:49 ` Shreeya Patel
0 siblings, 0 replies; 2+ messages in thread
From: Shreeya Patel @ 2018-01-29 14:49 UTC (permalink / raw)
To: lars, Michael.Hennerich, jic23, knaack.h, pmeerw, gregkh,
linux-iio, devel, linux-kernel
Cc: Shreeya Patel
In the ade7758 file, read raw does not require iio_dev->mlock for
reads. It can run concurrently as resource protection is handled
by buf_lock in ade7758_spi_read_reg_8()
Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
---
drivers/staging/iio/meter/ade7758_core.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c
index 7b7ffe5..227dbfc 100644
--- a/drivers/staging/iio/meter/ade7758_core.c
+++ b/drivers/staging/iio/meter/ade7758_core.c
@@ -526,9 +526,7 @@ static int ade7758_read_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
- mutex_lock(&indio_dev->mlock);
ret = ade7758_read_samp_freq(&indio_dev->dev, val);
- mutex_unlock(&indio_dev->mlock);
return ret;
default:
return -EINVAL;
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2018-01-29 14:49 [PATCH] Staging: iio: ade7758: Remove iio_dev mlock Shreeya Patel
2018-01-29 14:49 ` Shreeya Patel
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