linux-kernel - [RESEND PATCH] iio: adc: bcm_iproc_adc: swap primary and secondary isr handler's

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Message-Id: <1494913772-30904-1-git-send-email-raveendra.padasalagi@broadcom.com>
Date:   Tue, 16 May 2017 11:19:32 +0530
From:   Raveendra Padasalagi <raveendra.padasalagi@...adcom.com>
To:     Jonathan Cameron <jic23@...nel.org>,
        Pavel Roskin <plroskin@...il.com>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>
Cc:     linux-iio@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        stable@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Raveendra Padasalagi <raveendra.padasalagi@...adcom.com>
Subject: [RESEND PATCH] iio: adc: bcm_iproc_adc: swap primary and secondary isr handler's

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.

Reported-by: Pavel Roskin <plroskin@...il.com>
Fixes: 4324c97ecedc("iio: Add driver for Broadcom iproc-static-adc")
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@...adcom.com>
---
 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_status);
 
 	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_handler,
+				iproc_adc_interrupt_thread,
 				IRQF_SHARED, "iproc-adc", indio_dev);
 	if (ret) {
 		dev_err(&pdev->dev, "request_irq error %d\n", ret);
-- 
1.9.1