Re: [PATCH v2] iio: adc: bcm_iproc_adc: swap primary and secondary isr handler's

From: Jonathan Cameron
Date: Sun May 21 2017 - 08:02:23 EST

On 16/05/17 07:52, Raveendra Padasalagi wrote:
The third argument of devm_request_threaded_irq() is the primary
handler. It is called in hardirq context and checks whether the
interrupt is relevant to the device. If the primary handler returns
IRQ_WAKE_THREAD, the secondary handler (a.k.a. handler thread) is
scheduled to run in process context.

bcm_iproc_adc.c uses the secondary handler as the primary one
and the other way around. So this patch fixes the same, along with
re-naming the secondary handler and primary handler names properly.

Tested on the BCM9583XX iProc SoC based boards.

Fixes: 4324c97ecedc ("iio: Add driver for Broadcom iproc-static-adc")
Reported-by: Pavel Roskin <plroskin@xxxxxxxxx>
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Applied to the fixes-togreg branch of iio.git.



Changes in v2:
- Added Cc tag in the Signed-off area to send the patch to stable kernel
- Fixes tag corrected with proper formatting

drivers/iio/adc/bcm_iproc_adc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/adc/bcm_iproc_adc.c b/drivers/iio/adc/bcm_iproc_adc.c
index 21d38c8..7f4f9c4 100644
--- a/drivers/iio/adc/bcm_iproc_adc.c
+++ b/drivers/iio/adc/bcm_iproc_adc.c
@@ -143,7 +143,7 @@ static void iproc_adc_reg_dump(struct iio_dev *indio_dev)
iproc_adc_dbg_reg(dev, adc_priv, IPROC_SOFT_BYPASS_DATA);
-static irqreturn_t iproc_adc_interrupt_handler(int irq, void *data)
+static irqreturn_t iproc_adc_interrupt_thread(int irq, void *data)
u32 channel_intr_status;
u32 intr_status;
@@ -167,7 +167,7 @@ static irqreturn_t iproc_adc_interrupt_handler(int irq, void *data)
return IRQ_NONE;
-static irqreturn_t iproc_adc_interrupt_thread(int irq, void *data)
+static irqreturn_t iproc_adc_interrupt_handler(int irq, void *data)
irqreturn_t retval = IRQ_NONE;
struct iproc_adc_priv *adc_priv;
@@ -181,7 +181,7 @@ static irqreturn_t iproc_adc_interrupt_thread(int irq, void *data)
adc_priv = iio_priv(indio_dev);
regmap_read(adc_priv->regmap, IPROC_INTERRUPT_STATUS, &intr_status);
- dev_dbg(&indio_dev->dev, "iproc_adc_interrupt_thread(),INTRPT_STS:%x\n",
+ dev_dbg(&indio_dev->dev, "iproc_adc_interrupt_handler(),INTRPT_STS:%x\n",
intr_channels = (intr_status & IPROC_ADC_INTR_MASK) >> IPROC_ADC_INTR;
@@ -566,8 +566,8 @@ static int iproc_adc_probe(struct platform_device *pdev)
ret = devm_request_threaded_irq(&pdev->dev, adc_priv->irqno,
- iproc_adc_interrupt_thread,
+ iproc_adc_interrupt_thread,
IRQF_SHARED, "iproc-adc", indio_dev);
if (ret) {
dev_err(&pdev->dev, "request_irq error %d\n", ret);