linux-kernel - [PATCH] staging:iio:adc:ad7280a: Use GFP

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Message-Id: <20180628235503.4464-1-karim.eshapa@gmail.com>
Date:   Fri, 29 Jun 2018 01:55:03 +0200
From:   Karim Eshapa <karim.eshapa@...il.com>
To:     lars@...afoo.de
Cc:     Michael.Hennerich@...log.com, jic23@...nel.org, knaack.h@....de,
        pmeerw@...erw.net, gregkh@...uxfoundation.org,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, Karim Eshapa <karim.eshapa@...il.com>
Subject: [PATCH] staging:iio:adc:ad7280a: Use GFP_ATOMIC in interrupt handler

Use GFP_ATOMIC rather GFP_KERNEL in interrupt handler,
as GFP_KERNEL may sleep according to slab allocator.

Signed-off-by: Karim Eshapa <karim.eshapa@...il.com>
---
 drivers/staging/iio/adc/ad7280a.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index b736275c10f5..25c4fbc303f7 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -692,7 +692,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
 	unsigned int *channels;
 	int i, ret;
 
-	channels = kcalloc(st->scan_cnt, sizeof(*channels), GFP_KERNEL);
+	channels = kcalloc(st->scan_cnt, sizeof(*channels), GFP_ATOMIC);
 	if (!channels)
 		return IRQ_HANDLED;
 
-- 
2.17.1