On Fri, 4 Sep 2020 12:28:12 +1200, Chris Packham wrote:
The SPIE register contains counts for the TX FIFO so any time the irq handler was invoked we would attempt to process the RX/TX fifos. Use the SPIM value to mask the events so that we only process interrupts that were expected.
This was a latent issue exposed by commit 3282a3da25bd ("powerpc/64: Implement soft interrupt replay in C").
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
Thanks!
[1/1] spi: fsl-espi: Only process interrupts for expected events commit: b867eef4cf548cd9541225aadcdcee644669b9e1
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark