linux-kernel - [PATCH] spi: qup: replace spin_lock_irqsave by spin

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Message-Id: <20220302071521.6638-1-liu.airalert@gmail.com>
Date:   Wed,  2 Mar 2022 15:15:21 +0800
From:   Xingbang Liu <liu.airalert@...il.com>
To:     agross@...nel.org, bjorn.andersson@...aro.org, broonie@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, Xingbang Liu <liu.airalert@...il.com>
Subject: [PATCH] spi: qup: replace spin_lock_irqsave by spin_lock in hard IRQ

The code has been in a irq-disabled context since it is hard IRQ. There
is no necessity to do it again.

Signed-off-by: Xingbang Liu <liu.airalert@...il.com>
---
 drivers/spi/spi-qup.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index d39dec6d1c91..00d6084306b4 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -593,7 +593,6 @@ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id)
 {
 	struct spi_qup *controller = dev_id;
 	u32 opflags, qup_err, spi_err;
-	unsigned long flags;
 	int error = 0;
 
 	qup_err = readl_relaxed(controller->base + QUP_ERROR_FLAGS);
@@ -625,10 +624,10 @@ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id)
 		error = -EIO;
 	}
 
-	spin_lock_irqsave(&controller->lock, flags);
+	spin_lock(&controller->lock);
 	if (!controller->error)
 		controller->error = error;
-	spin_unlock_irqrestore(&controller->lock, flags);
+	spin_unlock(&controller->lock);
 
 	if (spi_qup_is_dma_xfer(controller->mode)) {
 		writel_relaxed(opflags, controller->base + QUP_OPERATIONAL);
-- 
2.25.1