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
  ...

5 files changed, 7 insertions, 11 deletions

diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
index 6150d2780e22..cadfb96734ed 100644
--- a/drivers/staging/iio/adc/ad7192.c
+++ b/drivers/staging/iio/adc/ad7192.c
@@ -162,6 +162,7 @@ struct ad7192_state {
 	u32				scale_avail[8][2];
 	u8				gpocon;
 	u8				devid;
+	struct mutex			lock;	/* protect sensor state */
 
 	struct ad_sigma_delta		sd;
 };
@@ -461,10 +462,10 @@ static int ad7192_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_SCALE:
 		switch (chan->type) {
 		case IIO_VOLTAGE:
-			mutex_lock(&indio_dev->mlock);
+			mutex_lock(&st->lock);
 			*val = st->scale_avail[AD7192_CONF_GAIN(st->conf)][0];
 			*val2 = st->scale_avail[AD7192_CONF_GAIN(st->conf)][1];
-			mutex_unlock(&indio_dev->mlock);
+			mutex_unlock(&st->lock);
 			return IIO_VAL_INT_PLUS_NANO;
 		case IIO_TEMP:
 			*val = 0;
@@ -508,6 +509,7 @@ static int ad7192_write_raw(struct iio_dev *indio_dev,
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
 		ret = -EINVAL;
+		mutex_lock(&st->lock);
 		for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
 			if (val2 == st->scale_avail[i][1]) {
 				ret = 0;
@@ -521,6 +523,7 @@ static int ad7192_write_raw(struct iio_dev *indio_dev,
 				ad7192_calibrate_all(st);
 				break;
 			}
+		mutex_unlock(&st->lock);
 		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (!val) {
@@ -567,7 +570,6 @@ static const struct iio_info ad7192_info = {
 	.write_raw_get_fmt = ad7192_write_raw_get_fmt,
 	.attrs = &ad7192_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
-	.driver_module = THIS_MODULE,
 };
 
 static const struct iio_info ad7195_info = {
@@ -576,7 +578,6 @@ static const struct iio_info ad7195_info = {
 	.write_raw_get_fmt = ad7192_write_raw_get_fmt,
 	.attrs = &ad7195_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
-	.driver_module = THIS_MODULE,
 };
 
 static const struct iio_chan_spec ad7192_channels[] = {
@@ -632,6 +633,8 @@ static int ad7192_probe(struct spi_device *spi)
 
 	st = iio_priv(indio_dev);
 
+	mutex_init(&st->lock);
+
 	st->avdd = devm_regulator_get(&spi->dev, "avdd");
 	if (IS_ERR(st->avdd))
 		return PTR_ERR(st->avdd);
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index f85dde9805e0..b736275c10f5 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -828,7 +828,6 @@ static const struct iio_info ad7280_info = {
 	.read_raw = ad7280_read_raw,
 	.event_attrs = &ad7280_event_attrs_group,
 	.attrs = &ad7280_attrs_group,
-	.driver_module = THIS_MODULE,
 };
 
 static const struct ad7280_platform_data ad7793_default_pdata = {
diff --git a/drivers/staging/iio/adc/ad7606.c b/drivers/staging/iio/adc/ad7606.c
index 18f5f139117e..25b9fcd5e3a4 100644
--- a/drivers/staging/iio/adc/ad7606.c
+++ b/drivers/staging/iio/adc/ad7606.c
@@ -373,26 +373,22 @@ static irqreturn_t ad7606_interrupt(int irq, void *dev_id)
 };
 
 static const struct iio_info ad7606_info_no_os_or_range = {
-	.driver_module = THIS_MODULE,
 	.read_raw = &ad7606_read_raw,
 };
 
 static const struct iio_info ad7606_info_os_and_range = {
-	.driver_module = THIS_MODULE,
 	.read_raw = &ad7606_read_raw,
 	.write_raw = &ad7606_write_raw,
 	.attrs = &ad7606_attribute_group_os_and_range,
 };
 
 static const struct iio_info ad7606_info_os = {
-	.driver_module = THIS_MODULE,
 	.read_raw = &ad7606_read_raw,
 	.write_raw = &ad7606_write_raw,
 	.attrs = &ad7606_attribute_group_os,
 };
 
 static const struct iio_info ad7606_info_range = {
-	.driver_module = THIS_MODULE,
 	.read_raw = &ad7606_read_raw,
 	.write_raw = &ad7606_write_raw,
 	.attrs = &ad7606_attribute_group_range,
diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c
index dec3ba6eba8a..a7797af579b9 100644
--- a/drivers/staging/iio/adc/ad7780.c
+++ b/drivers/staging/iio/adc/ad7780.c
@@ -155,7 +155,6 @@ static const struct ad7780_chip_info ad7780_chip_info_tbl[] = {
 
 static const struct iio_info ad7780_info = {
 	.read_raw = ad7780_read_raw,
-	.driver_module = THIS_MODULE,
 };
 
 static int ad7780_probe(struct spi_device *spi)
diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
index 17d280581e24..bfe180a475ee 100644
--- a/drivers/staging/iio/adc/ad7816.c
+++ b/drivers/staging/iio/adc/ad7816.c
@@ -335,7 +335,6 @@ static const struct attribute_group ad7816_event_attribute_group = {
 static const struct iio_info ad7816_info = {
 	.attrs = &ad7816_attribute_group,
 	.event_attrs = &ad7816_event_attribute_group,
-	.driver_module = THIS_MODULE,
 };
 
 /*