Merge tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO updates from Greg KH:
 "Here is the "big" staging and IIO driver update for 4.15-rc1.

  Lots and lots of little changes, almost all minor code cleanups as the
  Outreachy application process happened during this development cycle.
  Also happened was a lot of IIO driver activity, and the typec USB code
  moving out of staging to drivers/usb (same commits are in the USB tree
  on a persistent branch to not cause merge issues.)

  Overall, it's a wash, I think we added a few hundred more lines than
  removed, but really only a few thousand were modified at all.

  All of these have been in linux-next for a while. There might be a
  merge issue with Al's vfs tree in the pi433 driver (take his changes,
  they are always better), and the media tree with some of the odd
  atomisp cleanups (take the media tree's version)"

* tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (507 commits)
  staging: lustre: add SPDX identifiers to all lustre files
  staging: greybus: Remove redundant license text
  staging: greybus: add SPDX identifiers to all greybus driver files
  staging: ccree: simplify ioread/iowrite
  staging: ccree: simplify registers access
  staging: ccree: simplify error handling logic
  staging: ccree: remove dead code
  staging: ccree: handle limiting of DMA masks
  staging: ccree: copy IV to DMAable memory
  staging: fbtft: remove redundant initialization of buf
  staging: sm750fb: Fix parameter mistake in poke32
  staging: wilc1000: Fix bssid buffer offset in Txq
  staging: fbtft: fb_ssd1331: fix mirrored display
  staging: android: Fix checkpatch.pl error
  staging: greybus: loopback: convert loopback to use generic async operations
  staging: greybus: operation: add private data with get/set accessors
  staging: greybus: loopback: Fix iteration count on async path
  staging: greybus: loopback: Hold per-connection mutex across operations
  staging: greybus/loopback: use ktime_get() for time intervals
  staging: fsl-dpaa2/eth: Extra headroom in RX buffers
  ...

6 files changed, 37 insertions, 22 deletions

diff --git a/drivers/staging/iio/meter/ade7753.c b/drivers/staging/iio/meter/ade7753.c
index ce26abdeab92..c44eb577dc35 100644
--- a/drivers/staging/iio/meter/ade7753.c
+++ b/drivers/staging/iio/meter/ade7753.c
@@ -80,7 +80,7 @@
  * @us:         actual spi_device
  * @tx:         transmit buffer
  * @rx:         receive buffer
- * @buf_lock:       mutex to protect tx and rx
+ * @buf_lock:       mutex to protect tx, rx and write frequency
  **/
 struct ade7753_state {
 	struct spi_device   *us;
@@ -107,6 +107,19 @@ static int ade7753_spi_write_reg_8(struct device *dev,
 	return ret;
 }
 
+static int __ade7753_spi_write_reg_16(struct device *dev, u8 reg_address,
+				      u16 value)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ade7753_state *st = iio_priv(indio_dev);
+
+	st->tx[0] = ADE7753_WRITE_REG(reg_address);
+	st->tx[1] = (value >> 8) & 0xFF;
+	st->tx[2] = value & 0xFF;
+
+	return spi_write(st->us, st->tx, 3);
+}
+
 static int ade7753_spi_write_reg_16(struct device *dev, u8 reg_address,
 				    u16 value)
 {
@@ -115,10 +128,7 @@ static int ade7753_spi_write_reg_16(struct device *dev, u8 reg_address,
 	struct ade7753_state *st = iio_priv(indio_dev);
 
 	mutex_lock(&st->buf_lock);
-	st->tx[0] = ADE7753_WRITE_REG(reg_address);
-	st->tx[1] = (value >> 8) & 0xFF;
-	st->tx[2] = value & 0xFF;
-	ret = spi_write(st->us, st->tx, 3);
+	ret = __ade7753_spi_write_reg_16(dev, reg_address, value);
 	mutex_unlock(&st->buf_lock);
 
 	return ret;
@@ -483,7 +493,7 @@ static ssize_t ade7753_write_frequency(struct device *dev,
 	if (!val)
 		return -EINVAL;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->buf_lock);
 
 	t = 27900 / val;
 	if (t > 0)
@@ -501,10 +511,10 @@ static ssize_t ade7753_write_frequency(struct device *dev,
 	reg &= ~(3 << 11);
 	reg |= t << 11;
 
-	ret = ade7753_spi_write_reg_16(dev, ADE7753_MODE, reg);
+	ret = __ade7753_spi_write_reg_16(dev, ADE7753_MODE, reg);
 
 out:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->buf_lock);
 
 	return ret ? ret : len;
 }
@@ -561,7 +571,6 @@ static const struct attribute_group ade7753_attribute_group = {
 
 static const struct iio_info ade7753_info = {
 	.attrs = &ade7753_attribute_group,
-	.driver_module = THIS_MODULE,
 };
 
 static int ade7753_probe(struct spi_device *spi)
diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c
index be0df3fe4230..3a1e342d75fb 100644
--- a/drivers/staging/iio/meter/ade7754.c
+++ b/drivers/staging/iio/meter/ade7754.c
@@ -601,7 +601,6 @@ static const struct attribute_group ade7754_attribute_group = {
 
 static const struct iio_info ade7754_info = {
 	.attrs = &ade7754_attribute_group,
-	.driver_module = THIS_MODULE,
 };
 
 static int ade7754_probe(struct spi_device *spi)
diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c
index 40498af4dc46..7b7ffe5ed186 100644
--- a/drivers/staging/iio/meter/ade7758_core.c
+++ b/drivers/staging/iio/meter/ade7758_core.c
@@ -827,7 +827,6 @@ static const struct iio_info ade7758_info = {
 	.attrs = &ade7758_attribute_group,
 	.read_raw = &ade7758_read_raw,
 	.write_raw = &ade7758_write_raw,
-	.driver_module = THIS_MODULE,
 };
 
 static int ade7758_probe(struct spi_device *spi)
diff --git a/drivers/staging/iio/meter/ade7758_trigger.c b/drivers/staging/iio/meter/ade7758_trigger.c
index 5b35a7f08f4f..1f0d1a0cf889 100644
--- a/drivers/staging/iio/meter/ade7758_trigger.c
+++ b/drivers/staging/iio/meter/ade7758_trigger.c
@@ -53,7 +53,6 @@ static int ade7758_trig_try_reen(struct iio_trigger *trig)
 }
 
 static const struct iio_trigger_ops ade7758_trigger_ops = {
-	.owner = THIS_MODULE,
 	.set_trigger_state = &ade7758_data_rdy_trigger_set_state,
 	.try_reenable = &ade7758_trig_try_reen,
 };
diff --git a/drivers/staging/iio/meter/ade7759.c b/drivers/staging/iio/meter/ade7759.c
index 02573c517d9d..d99cf508d8d0 100644
--- a/drivers/staging/iio/meter/ade7759.c
+++ b/drivers/staging/iio/meter/ade7759.c
@@ -60,7 +60,7 @@
 /**
  * struct ade7759_state - device instance specific data
  * @us:			actual spi_device
- * @buf_lock:		mutex to protect tx and rx
+ * @buf_lock:		mutex to protect tx and rx and write frequency
  * @tx:			transmit buffer
  * @rx:			receive buffer
  **/
@@ -89,19 +89,30 @@ static int ade7759_spi_write_reg_8(struct device *dev,
 	return ret;
 }
 
-static int ade7759_spi_write_reg_16(struct device *dev,
+/*Unlocked version of ade7759_spi_write_reg_16 function */
+static int __ade7759_spi_write_reg_16(struct device *dev,
 		u8 reg_address,
 		u16 value)
 {
-	int ret;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct ade7759_state *st = iio_priv(indio_dev);
 
-	mutex_lock(&st->buf_lock);
 	st->tx[0] = ADE7759_WRITE_REG(reg_address);
 	st->tx[1] = (value >> 8) & 0xFF;
 	st->tx[2] = value & 0xFF;
-	ret = spi_write(st->us, st->tx, 3);
+	return spi_write(st->us, st->tx, 3);
+}
+
+static int ade7759_spi_write_reg_16(struct device *dev,
+		u8 reg_address,
+		u16 value)
+{
+	int ret;
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ade7759_state *st = iio_priv(indio_dev);
+
+	mutex_lock(&st->buf_lock);
+	ret = __ade7759_spi_write_reg_16(dev, reg_address, value);
 	mutex_unlock(&st->buf_lock);
 
 	return ret;
@@ -429,7 +440,7 @@ static ssize_t ade7759_write_frequency(struct device *dev,
 	if (!val)
 		return -EINVAL;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->buf_lock);
 
 	t = 27900 / val;
 	if (t > 0)
@@ -447,10 +458,10 @@ static ssize_t ade7759_write_frequency(struct device *dev,
 	reg &= ~(3 << 13);
 	reg |= t << 13;
 
-	ret = ade7759_spi_write_reg_16(dev, ADE7759_MODE, reg);
+	ret = __ade7759_spi_write_reg_16(dev, ADE7759_MODE, reg);
 
 out:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->buf_lock);
 
 	return ret ? ret : len;
 }
@@ -493,7 +504,6 @@ static const struct attribute_group ade7759_attribute_group = {
 
 static const struct iio_info ade7759_info = {
 	.attrs = &ade7759_attribute_group,
-	.driver_module = THIS_MODULE,
 };
 
 static int ade7759_probe(struct spi_device *spi)
diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c
index 70612da64a8b..90d07cdca4b8 100644
--- a/drivers/staging/iio/meter/ade7854.c
+++ b/drivers/staging/iio/meter/ade7854.c
@@ -530,7 +530,6 @@ static const struct attribute_group ade7854_attribute_group = {
 
 static const struct iio_info ade7854_info = {
 	.attrs = &ade7854_attribute_group,
-	.driver_module = THIS_MODULE,
 };
 
 int ade7854_probe(struct iio_dev *indio_dev, struct device *dev)