can: mcp251xfd: ring: mcp251xfd_ring_init(): checked RAM usage of ring setup

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With this patch the usage of the on-chip RAM is checked. In the
current driver the FIFO setup is fixed and always fits into the RAM.

With an upcoming patch series the ring and FIFO setup will be more
dynamic. Although using more RAM than available should not happen, but
add this safety check, just in case.

Link: https://lore.kernel.org/all/20220217103826.2299157-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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This commit is contained in:

Marc Kleine-Budde 2021-08-03 16:32:01 +02:00

parent 62713f0d9a

commit fa0b68df7c

3 changed files with 16 additions and 4 deletions

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4

drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c

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14

drivers/net/can/spi/mcp251xfd/mcp251xfd-ring.c

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2

drivers/net/can/spi/mcp251xfd/mcp251xfd.h

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