From: Marc Kleine-Budde Date: Mon, 11 Jan 2021 14:19:24 +0000 (+0100) Subject: can: length: canfd_sanitize_len(): add function to sanitize CAN-FD data length X-Git-Tag: accepted/tizen/unified/20230118.172025~7901^2~337^2~7 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=99b7beb0431a4b9728023e9169ed15af678d2c7f;p=platform%2Fkernel%2Flinux-rpi.git can: length: canfd_sanitize_len(): add function to sanitize CAN-FD data length The data field in CAN-FD frames have specifig frame length (0, 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 20, 24, 32, 48, 64). This function "rounds" up a given length to the next valid CAN-FD frame length. Reviewed-by: Vincent Mailhol Link: https://lore.kernel.org/r/20210111141930.693847-10-mkl@pengutronix.de Signed-off-by: Marc Kleine-Budde --- diff --git a/include/linux/can/length.h b/include/linux/can/length.h index 156b9d1..b2313b2 100644 --- a/include/linux/can/length.h +++ b/include/linux/can/length.h @@ -45,4 +45,10 @@ u8 can_fd_dlc2len(u8 dlc); /* map the sanitized data length to an appropriate data length code */ u8 can_fd_len2dlc(u8 len); +/* map the data length to an appropriate data link layer length */ +static inline u8 canfd_sanitize_len(u8 len) +{ + return can_fd_dlc2len(can_fd_len2dlc(len)); +} + #endif /* !_CAN_LENGTH_H */