On Thu, Jul 13, 2023 at 03:34:10PM +0000, Christophe Leroy wrote:
> Hi,
>
> Could you please backport the three following commits to 4.14 and 4.19:
>
> 24c363623361 ("spi: spi-fsl-spi: remove always-true conditional in
> fsl_spi_do_one_msg")
> 17ecffa28948 ("spi: spi-fsl-spi: relax message sanity checking a little")
> a798a7086c38 ("spi: spi-fsl-spi: allow changing bits_per_word while CS
> is still active")
>
> Those three commits (the last one indeed) are needed to overcome a
> problem introduced in 4.14.230 by commit 42c04316d927 ("spi: fsl-cpm:
> Use 16 bit mode for large transfers with even size"), which leads to the
> following error in certain cases:
>
> [ 174.900526] at25 spi0.3: bits_per_word/speed_hz should be same for
> the same SPI transfer
> [ 174.911844] spi_master spi0: failed to transfer one message from queue
> [ 366.639467] INFO: task od:406 blocked for more than 120 seconds.
> [ 366.645155] Not tainted 4.14.320-s3k-dev-dirty #342
> [ 366.652996] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 489.519450] INFO: task od:406 blocked for more than 120 seconds.
> [ 489.525156] Not tainted 4.14.320-s3k-dev-dirty #342
> [ 489.532915] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> ...
Now queued up, thanks.
greg k-h
