diff options
| author | Tobias Schramm <t.schramm@manjaro.org> | 2020-08-04 22:51:36 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-08-05 18:53:48 +0300 |
| commit | ae1ba50f1e706dfd7ce402ac52c1f1f10becad68 (patch) | |
| tree | 5d1ed35dd0443895af9c0275b6589a75a95aaae3 /drivers/spi | |
| parent | ddf75be47ca748f8b12d28ac64d624354fddf189 (diff) | |
| download | linux-ae1ba50f1e706dfd7ce402ac52c1f1f10becad68.tar.xz | |
spi: stm32: clear only asserted irq flags on interrupt
Previously the stm32h7 interrupt thread cleared all non-masked interrupts.
If an interrupt was to occur during the handling of another interrupt its
flag would be unset, resulting in a lost interrupt.
This patches fixes the issue by clearing only the currently set interrupt
flags.
Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
Link: https://lore.kernel.org/r/20200804195136.1485392-1-t.schramm@manjaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-stm32.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index 4c643dfc7fbb..4a21feae0103 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -966,7 +966,7 @@ static irqreturn_t stm32h7_spi_irq_thread(int irq, void *dev_id) if (!spi->cur_usedma && (spi->rx_buf && (spi->rx_len > 0))) stm32h7_spi_read_rxfifo(spi, false); - writel_relaxed(mask, spi->base + STM32H7_SPI_IFCR); + writel_relaxed(sr & mask, spi->base + STM32H7_SPI_IFCR); spin_unlock_irqrestore(&spi->lock, flags); |