| Message ID | 20201001222829.15977-12-Sergey.Semin@baikalelectronics.ru |
|---|---|
| State | Accepted |
| Commit | da8f58909e7e047a01e4577807e648482672eddd |
| Headers | show |
| Series | [v3,01/21] spi: dw: Use an explicit set_cs assignment | expand |
diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c index db3fec4195f7..58a7c7465c61 100644 --- a/drivers/spi/spi-dw-core.c +++ b/drivers/spi/spi-dw-core.c @@ -376,8 +376,6 @@ static int dw_spi_transfer_one(struct spi_controller *master, spi_enable_chip(dws, 1); return ret; } - } else { - dw_spi_irq_setup(dws); } spi_enable_chip(dws, 1); @@ -385,6 +383,8 @@ static int dw_spi_transfer_one(struct spi_controller *master, if (dws->dma_mapped) return dws->dma_ops->dma_transfer(dws, transfer); + dw_spi_irq_setup(dws); + return 1; }
It's theoretically erroneous to enable IRQ before the chip is turned on. If IRQ handler gets executed before the chip is enabled, then any data written to the Tx FIFO will be just ignored. I say "theoretically" because we haven't noticed any problem with that, but let's fix it anyway just in case... Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> --- drivers/spi/spi-dw-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)