https://github.com/torvalds/linux
Revision 81d192c2ce74157e717e1fc4b68791f82f7499d4 authored by Marc Kleine-Budde on 23 September 2022, 11:42:23 UTC, committed by Marc Kleine-Budde on 28 September 2022, 08:34:04 UTC
As Jacob noticed, the optimization introduced in 387da6bc7a82 ("can:
c_can: cache frames to operate as a true FIFO") doesn't properly work
on C_CAN, but on D_CAN IP cores. The exact reasons are still unknown.

For now disable caching if CAN frames in the TX path for C_CAN cores.

Fixes: 387da6bc7a82 ("can: c_can: cache frames to operate as a true FIFO")
Link: https://lore.kernel.org/all/20220928083354.1062321-1-mkl@pengutronix.de
Link: https://lore.kernel.org/all/15a8084b-9617-2da1-6704-d7e39d60643b@gmail.com
Reported-by: Jacob Kroon <jacob.kroon@gmail.com>
Tested-by: Jacob Kroon <jacob.kroon@gmail.com>
Cc: stable@vger.kernel.org # v5.15
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
1 parent 44d70bb
History
Tip revision: 81d192c2ce74157e717e1fc4b68791f82f7499d4 authored by Marc Kleine-Budde on 23 September 2022, 11:42:23 UTC
can: c_can: don't cache TX messages for C_CAN cores
Tip revision: 81d192c
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