Messages in this thread | | | Date | Sun, 14 Jun 2020 13:18:39 +0200 | From | Wolfram Sang <> | Subject | Re: [PATCH 2/2] spi: spi-fsl-dspi: Initialize completion before possible interrupt |
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> > If interrupt fires early, the dspi_interrupt() could complete > > (dspi->xfer_done) before its initialization happens. > > > > Fixes: 4f5ee75ea171 ("spi: spi-fsl-dspi: Replace interruptible wait queue with a simple completion") > > Cc: <stable@vger.kernel.org> > > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> > > --- > > Why would an interrupt fire before spi_register_controller, therefore > before dspi_transfer_one_message could get called?
I don't know this HW, but the generic answer usually is: Bootloader used SPI and didn't clean up properly.
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