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561aa5b4ce
linux/drivers/net/can/spi
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Marc Kleine-Budde 561aa5b4ce can: mcp251xfd: mcp251xfd_tx_obj_from_skb(): clean up padding of CAN-FD frames 
CAN-FD frames have only specific frame length (0, 1, 2, 3, 4, 5, 6, 7, 8, 12,
16, 20, 24, 32, 48, 64). A CAN-FD frame provided by user space might not cover
the whole CAN-FD frame. To avoid sending garbage over the CAN bus the driver
pads the CAN frame with 0x0 (if MCP251XFD_SANITIZE_CAN is activated).

This patch cleans up the pad len calculation. Rounding to full u32 brings no
benefit, in case of CRC transfers, the hw_tx_obj->data is not aligned to u32
anyway.

Link: https://lore.kernel.org/r/20210114153448.1506901-3-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-01-27 10:01:47 +01:00
..
mcp251xfd can: mcp251xfd: mcp251xfd_tx_obj_from_skb(): clean up padding of CAN-FD frames 2021-01-27 10:01:47 +01:00
hi311x.c can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00
Kconfig can: mcp251xfd: rename driver files and subdir to mcp251xfd 2020-09-30 21:54:30 +02:00
Makefile can: mcp251xfd: rename driver files and subdir to mcp251xfd 2020-09-30 21:54:30 +02:00
mcp251x.c can: dev: can_get_echo_skb(): extend to return can frame length 2021-01-14 08:43:43 +01:00