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Message-Id: <20220418121202.380669745@linuxfoundation.org>
Date: Mon, 18 Apr 2022 14:12:43 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Jiasheng Jiang <jiasheng@...as.ac.cn>,
Lee Jones <lee.jones@...aro.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 097/218] mfd: mc13xxx: Add check for mc13xxx_irq_request
From: Jiasheng Jiang <jiasheng@...as.ac.cn>
[ Upstream commit e477e51a41cb5d6034f3c5ea85a71ad4613996b9 ]
As the potential failure of the devm_request_threaded_irq(),
it should be better to check the return value of the
mc13xxx_irq_request() and return error if fails.
Fixes: 8e00593557c3 ("mfd: Add mc13892 support to mc13xxx")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Link: https://lore.kernel.org/r/20220224022331.3208275-1-jiasheng@iscas.ac.cn
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/mfd/mc13xxx-core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index 75d52034f89d..5b4faebdcae2 100644
--- a/drivers/mfd/mc13xxx-core.c
+++ b/drivers/mfd/mc13xxx-core.c
@@ -313,8 +313,10 @@ int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode,
adc1 |= MC13783_ADC1_ATOX;
dev_dbg(mc13xxx->dev, "%s: request irq\n", __func__);
- mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_ADCDONE,
+ ret = mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_ADCDONE,
mc13xxx_handler_adcdone, __func__, &adcdone_data);
+ if (ret)
+ goto out;
mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, adc0);
mc13xxx_reg_write(mc13xxx, MC13XXX_ADC1, adc1);
--
2.34.1
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