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spi: spi-stm32: remove redundant irqsave and irqrestore in hardIRQ 

Running in hardIRQ, disabling IRQ is redundant.

Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Link: https://lore.kernel.org/r/20200926001616.21292-2-song.bao.hua@hisilicon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Barry Song 2020-09-26 12:16:16 +12:00 committed by Mark Brown
parent 69544f2c15
commit e236893387
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 5 deletions
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9
drivers/spi/spi-stm32.c
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@ -804,10 +804,9 @@ static irqreturn_t stm32f4_spi_irq_event(int irq, void *dev_id)
struct spi_master *master = dev_id;
struct stm32_spi *spi = spi_master_get_devdata(master);
u32 sr, mask = 0;
unsigned long flags;
bool end = false;
spin_lock_irqsave(&spi->lock, flags);
spin_lock(&spi->lock);
sr = readl_relaxed(spi->base + STM32F4_SPI_SR);
/*
@ -833,7 +832,7 @@ static irqreturn_t stm32f4_spi_irq_event(int irq, void *dev_id)
if (!(sr & mask)) {
dev_dbg(spi->dev, "spurious IT (sr=0x%08x)\n", sr);
spin_unlock_irqrestore(&spi->lock, flags);
spin_unlock(&spi->lock);
return IRQ_NONE;
}
@ -875,11 +874,11 @@ end_irq:
STM32F4_SPI_CR2_TXEIE |
STM32F4_SPI_CR2_RXNEIE |
STM32F4_SPI_CR2_ERRIE);
spin_unlock_irqrestore(&spi->lock, flags);
spin_unlock(&spi->lock);
return IRQ_WAKE_THREAD;
}
spin_unlock_irqrestore(&spi->lock, flags);
spin_unlock(&spi->lock);
return IRQ_HANDLED;
}