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Staging/IIO fixes for 4.16-rc2

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Here are a small number of staging and iio driver fixes for 4.16-rc2.
 
 The IIO fixes are all for reported things, and the android driver fixes
 also resolve some reported problems.  The remaining fsl-mc Kconfig
 change resolves a build testing error that Arnd reported.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO fixes from Greg KH:
 "Here are a small number of staging and iio driver fixes for 4.16-rc2.

  The IIO fixes are all for reported things, and the android driver
  fixes also resolve some reported problems. The remaining fsl-mc
  Kconfig change resolves a build testing error that Arnd reported.

  All of these have been in linux-next with no reported issues"

* tag 'staging-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: buffer: check if a buffer has been set up when poll is called
  iio: adis_lib: Initialize trigger before requesting interrupt
  staging: android: ion: Zero CMA allocated memory
  staging: android: ashmem: Fix a race condition in pin ioctls
  staging: fsl-mc: fix build testing on x86
  iio: srf08: fix link error "devm_iio_triggered_buffer_setup" undefined
  staging: iio: ad5933: switch buffer mode to software
  iio: adc: stm32: fix stm32h7_adc_enable error handling
  staging: iio: adc: ad7192: fix external frequency setting
  iio: adc: aspeed: Fix error handling path
This commit is contained in:
Linus Torvalds 2018-02-22 12:05:43 -08:00
commit 77f892eb46
10 changed files with 65 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/iio/adc/aspeed_adc.c
View File

@ -243,7 +243,7 @@ static int aspeed_adc_probe(struct platform_device *pdev)
ASPEED_ADC_INIT_POLLING_TIME,
ASPEED_ADC_INIT_TIMEOUT);
if (ret)
goto scaler_error;
goto poll_timeout_error;
}
/* Start all channels in normal mode. */
@ -274,9 +274,10 @@ iio_register_error:
writel(ASPEED_OPERATION_MODE_POWER_DOWN,
data->base + ASPEED_REG_ENGINE_CONTROL);
clk_disable_unprepare(data->clk_scaler->clk);
reset_error:
reset_control_assert(data->rst);
clk_enable_error:
poll_timeout_error:
reset_control_assert(data->rst);
reset_error:
clk_hw_unregister_divider(data->clk_scaler);
scaler_error:
clk_hw_unregister_divider(data->clk_prescaler);

7
drivers/iio/adc/stm32-adc.c
View File

@ -722,8 +722,6 @@ static int stm32h7_adc_enable(struct stm32_adc *adc)
int ret;
u32 val;
/* Clear ADRDY by writing one, then enable ADC */
stm32_adc_set_bits(adc, STM32H7_ADC_ISR, STM32H7_ADRDY);
stm32_adc_set_bits(adc, STM32H7_ADC_CR, STM32H7_ADEN);
/* Poll for ADRDY to be set (after adc startup time) */
@ -731,8 +729,11 @@ static int stm32h7_adc_enable(struct stm32_adc *adc)
val & STM32H7_ADRDY,
100, STM32_ADC_TIMEOUT_US);
if (ret) {
stm32_adc_clr_bits(adc, STM32H7_ADC_CR, STM32H7_ADEN);
stm32_adc_set_bits(adc, STM32H7_ADC_CR, STM32H7_ADDIS);
dev_err(&indio_dev->dev, "Failed to enable ADC\n");
} else {
/* Clear ADRDY by writing one */
stm32_adc_set_bits(adc, STM32H7_ADC_ISR, STM32H7_ADRDY);
}
return ret;

7
drivers/iio/imu/adis_trigger.c
View File

@ -46,6 +46,10 @@ int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
if (adis->trig == NULL)
return -ENOMEM;
adis->trig->dev.parent = &adis->spi->dev;
adis->trig->ops = &adis_trigger_ops;
iio_trigger_set_drvdata(adis->trig, adis);
ret = request_irq(adis->spi->irq,
&iio_trigger_generic_data_rdy_poll,
IRQF_TRIGGER_RISING,
@ -54,9 +58,6 @@ int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
if (ret)
goto error_free_trig;
adis->trig->dev.parent = &adis->spi->dev;
adis->trig->ops = &adis_trigger_ops;
iio_trigger_set_drvdata(adis->trig, adis);
ret = iio_trigger_register(adis->trig);
indio_dev->trig = iio_trigger_get(adis->trig);

2
drivers/iio/industrialio-buffer.c
View File

@ -175,7 +175,7 @@ __poll_t iio_buffer_poll(struct file *filp,
struct iio_dev *indio_dev = filp->private_data;
struct iio_buffer *rb = indio_dev->buffer;
if (!indio_dev->info)
if (!indio_dev->info || rb == NULL)
return 0;
poll_wait(filp, &rb->pollq, wait);

2
drivers/iio/proximity/Kconfig
View File

@ -68,6 +68,8 @@ config SX9500
config SRF08
tristate "Devantech SRF02/SRF08/SRF10 ultrasonic ranger sensor"
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
depends on I2C
help
Say Y here to build a driver for Devantech SRF02/SRF08/SRF10

21
drivers/staging/android/ashmem.c
View File

@ -702,30 +702,32 @@ static int ashmem_pin_unpin(struct ashmem_area *asma, unsigned long cmd,
size_t pgstart, pgend;
int ret = -EINVAL;
if (unlikely(!asma->file))
return -EINVAL;
mutex_lock(&ashmem_mutex);
if (unlikely(copy_from_user(&pin, p, sizeof(pin))))
return -EFAULT;
if (unlikely(!asma->file))
goto out_unlock;
if (unlikely(copy_from_user(&pin, p, sizeof(pin)))) {
ret = -EFAULT;
goto out_unlock;
}
/* per custom, you can pass zero for len to mean "everything onward" */
if (!pin.len)
pin.len = PAGE_ALIGN(asma->size) - pin.offset;
if (unlikely((pin.offset | pin.len) & ~PAGE_MASK))
return -EINVAL;
goto out_unlock;
if (unlikely(((__u32)-1) - pin.offset < pin.len))
return -EINVAL;
goto out_unlock;
if (unlikely(PAGE_ALIGN(asma->size) < pin.offset + pin.len))
return -EINVAL;
goto out_unlock;
pgstart = pin.offset / PAGE_SIZE;
pgend = pgstart + (pin.len / PAGE_SIZE) - 1;
mutex_lock(&ashmem_mutex);
switch (cmd) {
case ASHMEM_PIN:
ret = ashmem_pin(asma, pgstart, pgend);
@ -738,6 +740,7 @@ static int ashmem_pin_unpin(struct ashmem_area *asma, unsigned long cmd,
break;
}
out_unlock:
mutex_unlock(&ashmem_mutex);
return ret;

17
drivers/staging/android/ion/ion_cma_heap.c
View File

@ -12,6 +12,7 @@
#include <linux/err.h>
#include <linux/cma.h>
#include <linux/scatterlist.h>
#include <linux/highmem.h>
#include "ion.h"
@ -42,6 +43,22 @@ static int ion_cma_allocate(struct ion_heap *heap, struct ion_buffer *buffer,
if (!pages)
return -ENOMEM;
if (PageHighMem(pages)) {
unsigned long nr_clear_pages = nr_pages;
struct page *page = pages;
while (nr_clear_pages > 0) {
void *vaddr = kmap_atomic(page);
memset(vaddr, 0, PAGE_SIZE);
kunmap_atomic(vaddr);
page++;
nr_clear_pages--;
}
} else {
memset(page_address(pages), 0, size);
}
table = kmalloc(sizeof(*table), GFP_KERNEL);
if (!table)
goto err;

2
drivers/staging/fsl-mc/bus/Kconfig
View File

@ -7,7 +7,7 @@
config FSL_MC_BUS
bool "QorIQ DPAA2 fsl-mc bus driver"
depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86 || PPC)))
depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86_LOCAL_APIC || PPC)))
select GENERIC_MSI_IRQ_DOMAIN
help
Driver to enable the bus infrastructure for the QorIQ DPAA2

27
drivers/staging/iio/adc/ad7192.c
View File

@ -141,6 +141,8 @@
#define AD7192_GPOCON_P1DAT BIT(1) /* P1 state */
#define AD7192_GPOCON_P0DAT BIT(0) /* P0 state */
#define AD7192_EXT_FREQ_MHZ_MIN 2457600
#define AD7192_EXT_FREQ_MHZ_MAX 5120000
#define AD7192_INT_FREQ_MHZ 4915200
/* NOTE:
@ -218,6 +220,12 @@ static int ad7192_calibrate_all(struct ad7192_state *st)
ARRAY_SIZE(ad7192_calib_arr));
}
static inline bool ad7192_valid_external_frequency(u32 freq)
{
return (freq >= AD7192_EXT_FREQ_MHZ_MIN &&
freq <= AD7192_EXT_FREQ_MHZ_MAX);
}
static int ad7192_setup(struct ad7192_state *st,
const struct ad7192_platform_data *pdata)
{
@ -243,17 +251,20 @@ static int ad7192_setup(struct ad7192_state *st,
id);
switch (pdata->clock_source_sel) {
case AD7192_CLK_EXT_MCLK1_2:
case AD7192_CLK_EXT_MCLK2:
st->mclk = AD7192_INT_FREQ_MHZ;
break;
case AD7192_CLK_INT:
case AD7192_CLK_INT_CO:
if (pdata->ext_clk_hz)
st->mclk = pdata->ext_clk_hz;
else
st->mclk = AD7192_INT_FREQ_MHZ;
st->mclk = AD7192_INT_FREQ_MHZ;
break;
case AD7192_CLK_EXT_MCLK1_2:
case AD7192_CLK_EXT_MCLK2:
if (ad7192_valid_external_frequency(pdata->ext_clk_hz)) {
st->mclk = pdata->ext_clk_hz;
break;
}
dev_err(&st->sd.spi->dev, "Invalid frequency setting %u\n",
pdata->ext_clk_hz);
ret = -EINVAL;
goto out;
default:
ret = -EINVAL;
goto out;

4
drivers/staging/iio/impedance-analyzer/ad5933.c
View File

@ -648,8 +648,6 @@ static int ad5933_register_ring_funcs_and_init(struct iio_dev *indio_dev)
/* Ring buffer functions - here trigger setup related */
indio_dev->setup_ops = &ad5933_ring_setup_ops;
indio_dev->modes |= INDIO_BUFFER_HARDWARE;
return 0;
}
@ -762,7 +760,7 @@ static int ad5933_probe(struct i2c_client *client,
indio_dev->dev.parent = &client->dev;
indio_dev->info = &ad5933_info;
indio_dev->name = id->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE);
indio_dev->channels = ad5933_channels;
indio_dev->num_channels = ARRAY_SIZE(ad5933_channels);