linux-kernel - [PATCH] spi: remove spin_lock

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Message-Id: <9e12d806c5554b4ed18c644f71f6662fcf0d0516.1649813822.git.lhjeff911@gmail.com>
Date:   Wed, 13 Apr 2022 09:38:00 +0800
From:   Li-hao Kuo <lhjeff911@...il.com>
To:     broonie@...nel.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     wells.lu@...plus.com, lh.kuo@...plus.com, nathan@...nel.org,
        trix@...hat.com, Li-hao Kuo <lhjeff911@...il.com>
Subject: [PATCH] spi: remove spin_lock_irq in the irq procress

- remove spin_lock_irq and spin_unlock_irq in the irq funciton

Signed-off-by: Li-hao Kuo <lhjeff911@...il.com>
---
 drivers/spi/spi-sunplus-sp7021.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/spi/spi-sunplus-sp7021.c b/drivers/spi/spi-sunplus-sp7021.c
index f989f7b..120623c 100644
--- a/drivers/spi/spi-sunplus-sp7021.c
+++ b/drivers/spi/spi-sunplus-sp7021.c
@@ -199,8 +199,6 @@ static irqreturn_t sp7021_spi_master_irq(int irq, void *dev)
 	if (tx_len == 0 && total_len == 0)
 		return IRQ_NONE;
 
-	spin_lock_irq(&pspim->lock);
-
 	rx_cnt = FIELD_GET(SP7021_RX_CNT_MASK, fd_status);
 	if (fd_status & SP7021_RX_FULL_FLAG)
 		rx_cnt = pspim->data_unit;
@@ -239,7 +237,7 @@ static irqreturn_t sp7021_spi_master_irq(int irq, void *dev)
 
 	if (isrdone)
 		complete(&pspim->isr_done);
-	spin_unlock_irq(&pspim->lock);
+
 	return IRQ_HANDLED;
 }
 
-- 
2.7.4